Anatomy 2Nd Midterm

Front 1

Name the three functional categories of joints.

Back 1

1.Synarthroses 2. Amphiarthroses 3. Diarthroses

Front 2

What is the name of the functional joint that is immovable?

Back 2

Synarthroses

Front 3

What is the name of the functional joint that is slightly moveable?

Back 3

amphiarthroses

Front 4

What is the name of the functional joint that is freely movable?

Back 4

Diarthroses

Front 5

Name the three structural categories of joints

Back 5

1. Fibrous Joints2. Cartilaginous Joints3. Synovial Joints

Front 6

Which of the structural joint types is generally considered immovable

Back 6

Fibrous Joint

Front 7

Which of the structural joint types is generally considered freely movable?

Back 7

Synovial Joints

Front 8

Which of the structural joint types is considered both rigid and slightly movable?

Back 8

Cartilaginous

Front 9

Describe what makes a fibrous joint unique (tissue type/cavity/ movement ability)

Back 9

- Joined by connective tissue- No joint cavity- amount of movement depends on connective tissue length

Front 10

What are three types of Fibrous Joints?

Back 10

sutures syndesmoses gomphoses

Front 11

What Joint type is found in the skull?

Back 11

Sutures

Front 12

Describe the characteristics of the fibrous joint, Sutures?

Back 12

- wavy articulating bone edges interlock and the junction is completely filled by a minimal amount of very short connective tissue- the fibrous tissue ossifies and the skull bones fuse into a single unit as a protective adaptation to protect the brain from damage.

Front 13

Describe the characteristics of the fibrous joint, Syndesmoses?

Back 13

-the bones are connected by a ligament- the amount of movement depends on the length of the connective tissue

Front 14

Describe the characteristic of the fibrous joint, Gomphoses?

Back 14

- A peg-in-socket- The fibrous connection is the short periodontal ligament- tooth in its bony alveolar socket

Front 15

Describe the cartilaginous joints?

Back 15

The articulating bones are united by cartilage.They lack a joint cavity

Front 16

What are the two types of Cartilaginous joints?

Back 16

Synchondroses Symphyses

Front 17

Describe a synchondroses Joint and give an example

Back 17

a bar or plate of hyaline cartilage unites the bones at a synchondrosis.epiphyseal plates connecting the diaphysis and epiphysis regions in long bones of children.

Front 18

Describe a symphyses joint and give an example

Back 18

the articular surfaces of the bones are coved with articular (hyaline) cartilage which in turn is fused to intervening pad or plate or fibrocartilageit acts as a shock absorber and permits a limited amount of movement at the joitEx: intervertebral joints and the pubic symphysis of the pelvis

Front 19

What is a synovial Joint

Back 19

those in which the articulating bones are separated by a fluid -containing joint cavity.Allows for freedom of movement .

Front 20

What are the five distinguishing features of a Synovial Joint

Back 20

1. Articular Cartilage2. Joint (synovial ) Cavity3. Articular Capsule4. Synovial Fluid5. Reinforcing Ligaments

Front 21

The ischium articulates with both _____ and ______.

Back 21

Ilium and pubis

Front 22

In anatomical position the lateral forearm bone is the _____

Back 22

Radius

Front 23

The most frequently fractured part of the humerus is ________

Back 23

Surgical neck

Front 24

Colles fracture is a break in the distal end of the _____

Back 24

Radius

Front 25

The cranial Vault of the skull is also called the ______

Back 25

Calvaria

Front 26

The vomer forms part of the

Back 26

Nasal septum

Front 27

Vertebronchondral ribs refers to ribs that attach to each other before they attach to the ______.

Back 27

Sternum

Front 28

The foramen magnum goes through the ________ bone.

Back 28

Occipital

Front 29

Ribs 11 and 12 are called ______ ribs.

Back 29

Floating ribs because they are missing an anterior attachment

Front 30

How many cervical vertebrae are there

Back 30

7

Front 31

How many thoracic vertebrae

Back 31

12

Front 32

How many lumbar vertebrae are there

Back 32

5

Front 33

The master gland of the body, the pituitary gland, is housed where?

Back 33

Enclosed in the hypophyseal fossa of the sphenoid bone

Front 34

The tubercle of a rib articulates with what

Back 34

Transverse process of a vertebra

Front 35

The dens projects from

Back 35

The axis

Front 36

The _____ bone contains openings that allow the tear ducts to pass

Back 36

Lacrimal bones

Front 37

Lordosis effects the _____ vertebrae

Back 37

Lumbar

Front 38

The largest and strongest bone of the face is the

Back 38

Mandible

Front 39

A temporal bone protrusion riddled with sinuses is the

Back 39

Mastoid process

Front 40

Coastal cartilage joins ribs to the ____.

Back 40

Sternum

Front 41

What do all vertebrae possess

Back 41

A body , transverse process and vertebral foramen

Front 42

Each intervertebral disc possesses what

Back 42

A nucleus pulposus and an annulus fibrosus

Front 43

These very small bones are at the medial border of each eye

Back 43

Lacrimal bones

Front 44

Bone houses the apparatus of the inner and middle ear

Back 44

Temporal bone

Front 45

Failure of these anterior bones to fuse causes a condition known as a cleft palate

Back 45

Maxilla

Front 46

This bone is wing shaped and extends behind the eyes and forms part of the floor of the cranial vault

Back 46

Sphenoid bone

Front 47

Temporal and parietal bone shape

Back 47

Squamosal

Front 48

Occipital and parietal shape

Back 48

lambdoid

Front 49

Parietal and frontal shape

Back 49

Coronal

Front 50

Right and left parietal bone shape

Back 50

Sagittal

Front 51

These bones have articular facets for the ribs

Back 51

Thoracic vertebrae

Front 52

Allows the head To nod yes

Back 52

Atlas

Front 53

Fused rudimentary tailbone

Back 53

Coccyx

Front 54

Thickest centrum with short blunt spinous processes

Back 54

Lumbar vertebrae

Front 55

A circle of bone that articulates superiorly with the occipital condyles

Back 55

Atlas

Front 56

Forearm bone articulates with most of the carpals

Back 56

Radius

Front 57

This bone articulates with the glenoid fossa

Back 57

Humerus

Front 58

The fingers have three of these bones and the thumb has only two

Back 58

Phalanges

Front 59

Only the ____ vertebrae have transverse foramen

Back 59

Cervical vertebrae

Front 60

The medial condyle of the femur articulates with the medial condyle of the _____

Back 60

Tibia

Front 61

Your cheek is composed of the ____ bone

Back 61

Zygomatic

Front 62

The lateral condyle of the femur articulates with the lateral condyle of the

Back 62

Tibia

Front 63

The large muscle on the anterior aspect of the scapula is the

Back 63

Subscapular fossa

Front 64

The ____ is the primary bone in the septum of the nose

Back 64

Vomer

Front 65

The heel bone

Back 65

Calcaneus

Front 66

The styloid process of the ___ points to the thumb

Back 66

Radius

Front 67

The largest foramen in the body is the

Back 67

Obturator foramen

Front 68

The smallest short bone in the hand is the

Back 68

Pisiform

Front 69

Movement at the hip joint does not have as wide a range of motion as the ____ joint

Back 69

Shoulder

Front 70

A _____ joint will exhibit several movements

Back 70

Ball and socket

Front 71

The major role of ligaments at synovial joints is to help....

Back 71

Direct movement and prevent undesirable movement

Front 72

Flexion of the ankle so that the superior aspect of the foot approaches the shin is called

Back 72

Dorsiflexion

Front 73

A uniaxial movement is usually seen at a joint such as a

Back 73

Hinge joint

Front 74

The amount of movement permitted by a particular joint is the basis for

Back 74

the functional classification of joints

Front 75

A person who has been diagnosed with a sprained ankle has an injury that is often accompanied by what

Back 75

Dislocations

Front 76

True or false: if the body is to move movement must occur at the joints

Back 76

True

Front 77

The gripping of the trochlea by the trochlear notch constitutes the hinge for

Back 77

the elbow joint

Front 78

The structural classification of joints is based on what

Back 78

The composition of the binding material and the presence or absence of a joint cavity

Front 79

In rheumatoid arthritis does the patient suffer from a loss of synovial fluids or an accumulation of synovial fluids

Back 79

Accumulation of synovial fluids

Front 80

Chondromalacia patellae is the softening of the articular cartilage on the

Back 80

Posterior patellar surface

Front 81

____ joints permit movement only in one plane

Back 81

Hinge Joint

Front 82

Bending of the tip of the finger exhibits ____.

Back 82

Flexion

Front 83

Moving the arm in a full circle is an example of

Back 83

Circumduction

Front 84

The wrist joint can exhibit____ movement

Back 84

Adduction

Front 85

Cruciate ligaments are important ligaments that help stabilize

Back 85

The knee

Front 86

Synovial fluid contains ____ cells that protect the cavity from Invasion by microbes or other degrees

Back 86

Phagocytic

Front 87

Synovial fluid is a viscous material that is derived by filtration from

Back 87

Blood

Front 88

The only movement allowed between the first two cervical vertebrae is

Back 88

Rotation

Front 89

A movement of the forearm in which the palm of the hand is turned from posterior to anterior is

Back 89

Supination

Front 90

Connective tissue Sacs lined with synovial membranes that act of cushions in place where friction develops are called what

Back 90

Bursae

Front 91

The cruciate ligaments of the knee do what?

Back 91

Prevent hyperextension of the knee

Front 92

Which ligament of the knee initiates the knee-jerk reflex when tapped?

Back 92

The patellar ligament

Front 93

Articular cartilage found at the ends of the long bones serves to...

Back 93

Provide a smooth surface at the ends of synovial joints

Front 94

Extracapsular ligaments stabilizing the knee include

Back 94

Lateral and medial collateral ligament preventing lateral or medial angular movements

Front 95

Football players often sustain lateral blows to the extended me which of the ligaments is / are damaged as a result

Back 95

Medial collateral medial meniscus and anterior cruciate

Front 96

Act as friction-reducing structures

Back 96

Tendon sheaths

Front 97

The ____ ligament holds the radius to the ulna at the proximal end

Back 97

Annular

Front 98

Synovial fluid is present in joint cavities of freely movable joints, it contains what type of acid

Back 98

Hyaluronic acid

Front 99

The ligaments that protect the alignment of the femoral and tibial condyles and limit the movement of the femur anteriorly and posteriorly are called

Back 99

Cruciate ligaments

Front 100

Menisci refers to

Back 100

Semilunar cartilage pads

Front 101

Multiaxial joints of the body include

Back 101

Hip and shoulder

Front 102

Saddle joints have concave and convex surfaces. Name the bones of the hand that articulate to form a saddle joint

Back 102

The trapezium of the carpal bone and the thumbs metacarpal

Front 103

Joint type that affords multiaxial movement

Back 103

Ball and socket

Front 104

On the basis of structural classification, which joint is fibrous connective tissue?

Back 104

Syndemosis

Front 105

Define synchondroses

Back 105

Cartilaginous joints where hyaline cartilage unites the ends of Bones

Front 106

Fibrous joint that is a peg-in-socket is called a

Back 106

Gomphosis

Front 107

Gliding motion of the wrist is accomplished because of the ____ joint

Back 107

Plane joint

Front 108

Joint that permits essentially no movement

Back 108

Synarthrotic

Front 109

What are fibrous joints classified as

Back 109

Sutures, Syndesmoses, gomphoses

Front 110

An example of interosseous fibrous joint is

Back 110

The radius and ulna along its length

Front 111

An immovable joint found only between skull bones is called

Back 111

Suture

Front 112

The annular ligament surrounds the head of what bone

Back 112

Radius

Front 113

In symphysis joints the articular surfaces of the bones are covered with

Back 113

Hyaline cartilage

Front 114

A joint United by dense fibrocartilaginous tissue that permits a slight degree of movement is

Back 114

Symphysis

Front 115

presence of a synovial cavity, articular cartilage, synovial membrane, and ligaments are characteristics of what type of joint

Back 115

Hinge joint

Front 116

____ are cartilaginous joints

Back 116

Synchondroses

Front 117

Articulations permitting only slight degrees of movement are

Back 117

Amphiarthroses

Front 118

Joints that are freely movable

Back 118

Synovial

Front 119

6 major categories of synovial joints

Back 119

Plane

Hinge

Pivot

Condyloid

Saddle

Ball and socket

Front 120

When a ballerina points the toes it is known as

Back 120

Plantar flexion

Front 121

An increase or decrease between the angle of two bones is known as what type of movement

Back 121

Angular movements

Front 122

What type of movement occurs at the intercarpal and intertarsal joints

Back 122

Gliding movement

Front 123

Bending your head back until it hurts is an example of

Back 123

Hyperextension

Front 124

The term inversion and eversion pertains only to

Back 124

The feet

Front 125

The only movement allowed in a pivot joint is

Back 125

Uniaxial rotation

Front 126

When one is moving a limb away from the median plane of the body along the frontal plane it is called

Back 126

Abduction

Front 127

If a patient was suffering from bursitis this condition would be designated as inflammation of ____

Back 127

Small sac containing fluid

Front 128

Which of the following conditions is generally considered a non-inflammatory type of arthritis

Back 128

Osteoarthritis

Front 129

Gouty arthritis is a painful condition caused by

Back 129

Excessive blood levels of uric acid deposited as crystals in the soft tissue of joints

Front 130

Compared to the shoulder displacements of the hip joints are

Back 130

Rare because of the ligament reinforcement

Front 131

Turning the foot medially at the ankle

Back 131

Inversion

Front 132

Synchondrosis joint

Back 132

Cartilaginous

Front 133

The Joint involved in turning the sole of foot medially

Back 133

Plane

Front 134

The movement performed in turning the sole of the foot medially

Back 134

Inversion

Front 135

The Joint involved in bending the elbow

Back 135

Hinge

Front 136

The movement performed in turning the head side to side

Back 136

Rotation

Front 137

The Joint between the carpal and the first metacarpal

Back 137

Saddle

Front 138

Joint involved in lowering your arm to your side

Back 138

Ball and socket

Front 139

Moving your jaw forward causing an underbite

Back 139

Protraction

Front 140

A freely movable joint

Back 140

Diarthrosis

Front 141

The hip joint

Back 141

Ball and socket

Front 142

Joint involved in turning the head side to side

Back 142

Pivot

Front 143

The movement performed in lowering your arm to your side

Back 143

Adduction

Front 144

A fluid-filled cavity a tendon slides over

Back 144

Bursa

Front 145

The movement performed in bending the elbow

Back 145

Flexion

Front 146

Partial dislocation of a joint

Back 146

Subluxation

Front 147

claudication might more simply be called

Back 147

Limping

Front 148

In the synaptic cleft of a neuromuscular Junction, ____ is always present

Back 148

Acetylcholinesterase

Front 149

The end of the muscle that moves when a muscle contracts is called the

Back 149

Insertion

Front 150

Only ____ muscle cells are multinucleated

Back 150

Skeletal

Front 151

The time in which cross bridges are active is called the period Of

Back 151

Contraction

Front 152

Only _____ muscle cells branch

Back 152

Cardiac

Front 153

____ (color) fibers are slow (oxidative) fibers

Back 153

Red

Front 154

A smooth sustained contraction is called

Back 154

Tetanus

Front 155

True or false ; although there are no sarcomeres, smooth muscle still possesses thick and thin filaments

Back 155

True

Front 156

Important function of skeletal muscle is the production of ____.

Back 156

Heat

Front 157

Not all muscle contractions will always promote the movement of body parts. What else is muscle contraction used for

Back 157

Maintaining posture, stabilizing joints, and generating Heat

Front 158

What is a motor unit

Back 158

a nerve cell and all the muscle cells that it stimulates

Front 159

Isometric contraction

Back 159

The muscle neither shortens nor lengthens

Front 160

When a motor neuron fires what happens to all of the muscle fibers

Back 160

They contract

Front 161

The more ____ a skeletal muscle is stimulated the greater its exerted Force

Back 161

Rapidly

Front 162

The Gap Junctions between smooth muscle cells are _____ coupled.

Back 162

Electrically

Front 163

Skeletal muscle cells are _______ coupled.

Back 163

Chemically

Front 164

What is the function of G actin

Back 164

Bearing the active site to which the myosin heads attach during contraction

Front 165

Peristalsis is a characteristic of what type of muscle

Back 165

Smooth muscle

Front 166

Where is single-unit smooth muscle found

Back 166

Found in the intestines

Front 167

caused by a difference in the concentration of certain ions inside and outside of the cell

Back 167

Resting potential

Front 168

Oxygen required to restore oxygen used by all of the processes involved in contraction

Back 168

Oxygen debt

Front 169

The effect of the neurotransmitter on the muscle cell membrane is to

Back 169

Modify its permeability properties temporarily

Front 170

A contraction in which the muscle does not shorten but it's tension increases

Back 170

Isometric

Front 171

The I band diminish in size, the H zones disappear, and the A bands move closer together but do not diminish in length

Back 171

When muscle fiber contracts

Front 172

Slow oxidative fatigue resistant fibers

Back 172

Red fibers

Front 173

Abundant in muscles used to maintain posture

Back 173

Slow fatigue resistant fibers

Front 174

Have very fast-acting myosin ATPases and depend upon anaerobic metabolism during contraction

Back 174

Fast oxidative or glycolytic fatigable fibers

Front 175

A high percentage of these fibers are found in marathon runners

Back 175

Slow oxidative fatigue resistant fibers

Front 176

Depends on oxygen delivery and aerobic mechanisms

Back 176

Slow oxidative fatigue resistant fibers

Front 177

Contains abundant amounts of glycogen

Back 177

Fast oxidative or glycolytic fatigable fibers

Front 178

The thicker filaments are the ____ filaments

Back 178

Myosin

Front 179

Both actin and myosin are found in the

Back 179

A band

Front 180

The myosin filaments are located in the

Back 180

A Band

Front 181

The ____ contains only the actin filaments

Back 181

I band

Front 182

The phenomenon in which the contraction of a muscle increases due to increased enzyme efficiency during the warm-up

Back 182

Treppe

Front 183

The stimulus above which no stronger contraction can be elicited because all motor units are firing in the muscle

Back 183

Maximal stimulus

Front 184

The situation in which contractions become stronger due to a rapid stimulation rate. partial relaxation occurs between contractions

Back 184

Wave summation

Front 185

Continue to sustain smooth contraction due to Rapid stimulation

Back 185

Tetanus

Front 186

Used to convert ADP to ATP by transfer of a high-energy phosphate group. A reserve high-energy compound

Back 186

Creatine phosphate

Front 187

Serves as the actual trigger for muscle contraction by removing the inhibition of the troponin molecules

Back 187

Calcium ions

Front 188

Destroys ACh

Back 188

Acetylcholinesterase

Front 189

A metabolic pathway that provides for a large amount of ATP per glucose because oxygen is used. Products are water and carbon dioxide and ATP.

Back 189

Aerobic respiration

Front 190

A neurotransmitter substance released at motor end plates by the axonal endings

Back 190

Acetylcholine

Front 191

Normally stored in the terminal cisternae

Back 191

Calcium ions

Front 192

Why does rigor mortis occur

Back 192

ATP is required to release the attached actin and myosin molecules

Front 193

Athletes sometimes complain of oxygen debt, the condition that results when insufficient oxygen is available to completely break down pyruvic acid. As a result the pyruvic is converted to _______.

Back 193

Lactic acid

Front 194

Fatigue muscle cells that recover rapidly are the products of

Back 194

Intense exercise of short duration

Front 195

Muscle fibers degenerate and atrophy

Back 195

Muscular dystrophy

Front 196

The main effect of the warmup period of athletes as the muscle contractions increase in strength is to;

Back 196

Enhance the availability of calcium and the efficiency of enzyme systems

Front 197

Theoretically if a muscle were stretched to the point where thick and thin filaments no longer overlapped....

Back 197

No muscle tension could be generated

Front 198

The warm-up period required of athletes in order to bring your muscles to Peak Performance is called

Back 198

Treppe

Front 199

A State of sustained partial contraction in muscles

Back 199

Muscle tone

Front 200

What is the most common functional classification of synovial joints

Back 200

Diarthrosis

Front 201

What describes an amphiarthroses joint?

Back 201

It is slightly movable

Front 202

This joint is extremely stable

Back 202

Hip joint

Front 203

What is meniscus

Back 203

Fibrocartilage that prevents the knee from rotating while extended.

Front 204

What joint is described as sacrificing stability for free movement?

Back 204

Shoulder joint

Front 205

What is a sprain

Back 205

Torn or stretched ligaments

Front 206

What is the function of articular cartilage?

Back 206

To keep bone ends from crushing when compressed

Front 207

What describes a turning movement around the longitudinal bone axis

Back 207

Rotation

Front 208

What joint is at risk when people grind their teeth

Back 208

Temporomandibular

Front 209

What type of joint is exhibited by the knuckles?

Back 209

Condyloid

Front 210

What describes the articulation of the patella?

Back 210

The patella articulates directly with the femur only.

Front 211

What two bones articulate in a joint allowing supination and pronation?

Back 211

Ulna and radius

Front 212

What is the classification of the intervertebral joints?

Back 212

Symphyses

Front 213

What describes movement along the sagittal plane that decreases the angle between bones?

Back 213

Flexion

Front 214

What is it called when a muscle cannot contract even though it is being stimulated?

Back 214

Fatigue

Front 215

What structure is responsible for the contractile characteristic of muscle fibers?

Back 215

Myofibrils

Front 216

The ability of a muscle to stretch without being damaged

Back 216

Extensibility

Front 217

What is composed of myosin protein

Back 217

Thick filaments

Front 218

What is the role of calcium in muscle contraction?

Back 218

To expose the myosin binding site on the actin

Front 219

What event stimulates a skeletal muscle to contract?

Back 219

When acetylcholine binds to the receptor site on the sarcolemma

Front 220

What step of the generation of the action potential happens first?

Back 220

The sodium ion Channel opens

Front 221

What is perimysium

Back 221

Connective tissue surrounding a fascicle

Front 222

Which of the following steps occurs right before the myosin head attaches to the actin during the sliding filaments

filaments

Back 222

The tropomyosin molecule is moved away from the binding site.

Front 223

What describes the role of the T tubules?

Back 223

They conduct impulses to the deepest regions of the muscle cell and every sarcomere.

Front 224

Which of the following bands decreases in size or disappears when a muscle contracts?

Back 224

I band

Front 225

Where is an abundance of fast glycolytic fibers found?

Back 225

In the muscles that move quickly and intensely

Front 226

What describes muscular dystrophy?

Back 226

An inherited disease in which muscle mass is decreased

Front 227

explain how myofibers shorten?

Back 227

Thin filaments are pulled toward the center of the sarcomere

Front 228

What is the sarcoplasmic reticulum?

Back 228

It is the site of calcium storage in myofibers

Front 229

Which muscle tissue responds to involuntary nervous system control?

Back 229

Both smooth and cardiac muscle

Front 230

Where is smooth muscle tissue found

Back 230

In the walls of blood vessels

Front 231

What occurs within a muscle cell during oxygen debt

Back 231

Lactic acid is accumulated

Front 232

Describe isotonic contraction

Back 232

A contraction in which the muscle shortens

Front 233

Describe the sarcolemma

Back 233

It is the plasma membrane of a myofiber

Front 234

What happens to excess lactic acid that accumulates after vigorous exercise

Back 234

It is converted to pyruvic acid by the liver

Front 235

The _____ the functions mainly in compression of the abdominal contents

Back 235

Transversus abdominis

Front 236

The ____ muscle abducts the ulna during forearm pronation and is a synergist of triceps brachii in elbow extension.

Back 236

Anconeus

Front 237

The ____ muscle Works towards plantar flexion

Back 237

Tibialis posterior

Front 238

In order to propel food down to the esophagus, the ___________ muscles would be used.

Back 238

Pharyngeal constrictor

Front 239

A pair of tweezers is an example of a ____ class lever

Back 239

3rd

Front 240

The ____ is a synergist of the gastrocnemius used in plantar flexion

Back 240

Soleus

Front 241

Severing of the patellar tendon would inactivate the _____ group.

Back 241

quadriceps

Front 242

Muscles that maintain posture are called

Back 242

Fixators

Front 243

What is the largest strongest tendon in the body

Back 243

Achilles tendon

Front 244

The broadest muscle of the back is the

Back 244

Latissimus dorsi

Front 245

The insertion of the biceps brachii is on the

Back 245

Radius

Front 246

Slow-acting finger flexor

Back 246

Flexor digitorum profundus

Front 247

Extensor pollicis longus and brevis

Back 247

Extends the thumb

Front 248

Flexor carpi ulnaris

Back 248

Flexes the wrist

Front 249

Extensor carpi radialis longus and brevis

Back 249

Extend and abduct the wrist

Front 250

This muscle is a powerful forearm extensor

Back 250

Triceps brachii

Front 251

This is known as the boxer muscle

Back 251

Serratus anterior

Front 252

This muscle runs deep to the external oblique

Back 252

Internal oblique

Front 253

This muscle helps keep food between the grinding surfaces of the teeth during chewing

Back 253

Buccinator

Front 254

Is muscle draws the corner of the mouth downward as in expressing horror

Back 254

Platysma

Front 255

Is the main chewing muscle

Back 255

Masseter

Front 256

The pectoralis major has a ____ arrangement of fascicles

Back 256

Convergent

Front 257

Is the abnormal protrusion of the small intestine through a weak point in the muscle of the abdominal wall

Back 257

Hernia

Front 258

Fibers run at right angles to the axis of the muscle

Back 258

Transversus

Front 259

The quadriceps femoris is composed of three vastus muscles and the

Back 259

Rectus femoris

Front 260

Is a synergist of the latissimus dorsi it extends medially rotates and adducts the humerus

Back 260

Teres major

Front 261

This muscle extends the great toe

Back 261

Extensor hallucis longus