Lab Human Anatomy Exam 2: Upper Limb Muscles

Front 1

Origin of Trapezius

Back 1

Origin: External occipital protuberance, spinous processes of C1-T12

Front 2

Insertion of Trapezius

Back 2

Insertion: spine and acromion of scapula

Front 3

Action of Trapezius

Back 3

Elevate and retract scapula

Front 4

Origin of Pectoralis minor

Back 4

Ribs

Front 5

Insertion of Pectoralis Minor

Back 5

coacoid process

Front 6

Action of Pectoralis Minor

Back 6

depress scapula

Front 7

Origin of serratus anterior

Back 7

medial border of scapula

Front 8

Insertion of serratus anterior

Back 8

coracoid process

Front 9

Action of serratus anterior

Back 9

protraction of the scapula

Front 10

Origin Rhomboids (major and min)

Back 10

Thoracic spinous processes

Front 11

Insertion of Rhomboids (min and major)

Back 11

Medial border of scapula

Front 12

Action of Rhomboids (min and major)

Back 12

Retract the scapula

Front 13

Origin of Levator scapulae

Back 13

Cervical spinous processes

Front 14

Insertion of levator scapulae

Back 14

Superior angle of scapula

Front 15

Action of levator scapulae

Back 15

elevate scapula

Front 16

Origin of deltoid

Back 16

scapula and clavicle

Front 17

Insertion of deltoid

Back 17

deltoid tuberosity

Front 18

Action of deltoid

Back 18

abduction of humerus

Front 19

Origin of coracobrachialis

Back 19

coracoid process

Front 20

Insertion of coracobrachialis

Back 20

middle of the 1/3 of humerus

Front 21

Action coracobrachialis

Back 21

Adduction of humerus
Move medially
move toward the mid line of the body


(Moving the upper arm down to the side toward the body)

Front 22

Origin Pectoralis Major

Back 22

sternum and clavicle

Front 23

Insertion pectoralis major

Back 23

intertubercular groove

Front 24

Action pectoralis major

Back 24

Flexion of humerus
move anteriorly
moving to the front of the body
(moving the upper arm upward to the front)

Front 25

Origin Latissimus dorsi

Back 25

Thoracic and lumbar spinous processes

Front 26

Insertion Latissimus dorsi

Back 26

Intertubercular groove

Front 27

Action Latissimus dorsi

Back 27

extension and medial rotation of the humerus

Front 28

Origin Teres major

Back 28

Inferior angle of scapula

Front 29

Insertion Teres major

Back 29

Intertubercular groove

Front 30

Action Teres major

Back 30

Extension and Medial rotation of the humerus

Front 31

Origin supraspinatus

Back 31

supraspinous fossa

Front 32

Insertion supraspinatus

Back 32

Greater tubercle

Front 33

Action supraspinatus

Back 33

lateral rotation and and abduction of humerus

Front 34

Origin infraspinatus

Back 34

infraspinous fossa

Front 35

Insertion infraspinatus

Back 35

Greater tubercle

Front 36

Action infraspinatus

Back 36

lateral rotation of humerus

Front 37

Origin teres minor

Back 37

Inferior angle of scapula

Front 38

Insertion teres minor

Back 38

Greater tubercle

Front 39

Action teres minor

Back 39

lateral rotation of humerus

Front 40

Origin subscapularis

Back 40

subscapular fossa

Front 41

Origin subscapularis

Back 41

Subscapular fossa

Front 42

Insertion subscapularis

Back 42

Lesser tubercle

Front 43

Action subscapularis

Back 43

lateral rotation of humerus
external rotation

Front 44

Origin biceps brachii

Back 44

Scapula

Front 45

Insertion biceps brachii

Back 45

Radial tuberosity

Front 46

Action biceps brachii

Back 46

flexion of antebrachium

Front 47

Origin brachialis

Back 47

humerus

Front 48

Insertion brachialis

Back 48

ulnar tuberosity

Front 49

Action brachialis

Back 49

flexion of antebrachium

Front 50

Origin triceps brachii

Back 50

scapula and humerus

Front 51

Insertion triceps brachii

Back 51

olecranon process

Front 52

Action tricpes brachii

Back 52

Extension of antebrachium

Front 53

Origin flexor digitorum superficialis

Back 53

Medial epicondyle

Front 54

Insertion flexor digitorum superficialis

Back 54

phalanges (2-5)

Front 55

Action flexor digitorum superficialis

Back 55

flexion of digits

Front 56

Origin pronator teres

Back 56

medial epicondyle

Front 57

Insertion pronator teres

Back 57

lateral surface of radius

Front 58

Action pronator teres

Back 58

pronation of antebrachium
(radial movement)
turns hand on other side-facing down

Front 59

Origin Flexor carpi ulnaris

Back 59

Medial epicondlye

Front 60

Insertion Flexor Carpi Ulnaris

Back 60

Ulnar carpals

Front 61

Action Flexor Carpi Ulnaris

Back 61

Flexion of wrist

Front 62

Origin Brachioradialis

Back 62

Lateral epicondyle

Front 63

Insertion Brachiaradialis

Back 63

Syloid process of radius

Front 64

Action Brachiaradialis

Back 64

Flexion of atebrachium

Front 65

Origin Extensor Carpi Radialis (longus and brevis)

Back 65

lateral epicondyle

Front 66

Insertion Extensor Carpi Radialis (longus and brevis)

Back 66

radial carpals

Front 67

Action Extensor Carpi Radialis (longus and brevis)

Back 67

extension of wrist

Front 68

Origin Extensor digitorum

Back 68

lateral epicondyle

Front 69

Insertion Extensor digitorum

Back 69

phalanges (2-4)

Front 70

Action Extensor digitorum

Back 70

extension digits

Front 71

Origin Extensor Digiti minimi

Back 71

lateral epicondyle

Front 72

Insertion Extensor Digiti minimi

Back 72

phalanx (5)

Front 73

Action Extensor Digiti minimi

Back 73

extension digit

Front 74

Origin entensor carpi ulnaris

Back 74

Lateral epicondyle

Front 75

Insertion extensor carpi ulnaris

Back 75

ulnar carpals

Front 76

Action extensor carpi ulnaris

Back 76

Extension of wrist

Front 77

Origin supinator

Back 77

lateral epicondyle and ulna

Front 78

Insertion supinator

Back 78

anterior surface of radius

Front 79

Action supinator

Back 79

supination of antebrachium (palm facing up)

radial movement

Front 80

Only joint connecting the upper limb to the axial skeleton

Back 80

sternoclavicular joint

Front 81

A number of upper limb muscles are extremely important in fastening what to what?

Back 81

scapular to the thorax

Front 82

What the is the important function of upper limb muscles, that is rare among animals?

Back 82

manipulating our environment

Front 83

What are the four movements of the scapula?

Back 83

protraction, retraction, elevation, depression

Front 84

The scapula is pulled laterally, as when extending the arm for something out of reach?

Back 84

protraction

Front 85

The scapula is pulled medially, as when pulling your shoulders back?

Back 85

Retraction

Front 86

The scapula is moved superiorly, as when shrugging the shoulders?

Back 86

Elevation

Front 87

The scapula is moved inferiorly, as when carrying a heavy suitecase

Back 87

Depression

Front 88

What are the glenoidhumeral motions?

Back 88

movements of the humerus: abduction, adduction, medial rotation, lateral rotation, flexion, extension

Front 89

What are the humeroulnar motions?

Back 89

Movements of the ulna: flexion and extension

Front 90

What are the radial motions?

Back 90

Movements of the radius: Supination and pronation

Front 91

What are the wrist motions?

Back 91

flexion, extension, abduction, adduction

Front 92

What are the metacarpophalangeal joints movements?

Back 92

flexion, extension, abduction, adduction

Front 93

What are the interphalangeal joints movements?

Back 93

movements of the tip of your fingers: flexion and extension

Front 94

Wrist motion of abduction

Back 94

move the thumb out

Front 95

Wrist motion of adduction

Back 95

move the pinky side of wrist out

Front 96

Metacarpophalangeal joints abduction

Back 96

move thumb and pinky fingers out

Front 97

Metacarpophalangeal joints adduction

Back 97

move thumb and pinky fingers in

Front 98

This forms a very mobile connection the the body

Back 98

pectoral girdle

Front 99

What glides and rotates along the thorax?

Back 99

scapula

Front 100

What connects the scapula to the axial skeleton?

Back 100

clavicle

Front 101

What is the major action of the trapezius? And what does this do?

Back 101

elevate the scapula

stabilizes the weight that is carried by the arm

Front 102

What muscle stablizes the weight carried by the arm?

Back 102

Trapezius

Front 103

What are the two functions of the trapezius?

Back 103

1) elevate scapula
2) retraction scapula

Front 104

This assists the rhomboids in their shared function?

Back 104

trapezius, retraction of scapula

Front 105

This is a fan shaped muscle that has fascicles that travel in several directions?

Back 105

trapezius

Front 106

The fascicles of what muscle travel in several directions are capable of doing what?

Back 106

trapezius

moving the scapula in a variety of directions

Front 107

What two muscles depress the scapula?

Back 107

Pectoralis minor (more signficant one) and subclavius

Front 108

Protraction of the scapula is produced by what muscle?

Back 108

serratus anterior

Front 109

This muscle is called the boxer's muscle?

Back 109

serratus anterior

Front 110

This three muscles retract and elevate the scapula respectfully?

Back 110

rhomboids(major and minor)
levator scapulae




(dont forget that trapezius retracts the scapula)

Front 111

Movers of the scapula are?

Back 111

trapezius, rhomboids (major and minor), larector scapulae, serratus anterior, pectoralis minor

Front 112

Two groups of movers of the shoulder?

Back 112

1) extrinsic muscles
2) intrinsic muscles

Front 113

What do these two groups of movers of the shoulder do? (2)

Back 113

1) they originate on the scapula
2) cross the gelnohumeral joint

Front 114

The muscles that attach at the shaft of the humerus?

Back 114

extrinsic muscles

Front 115

The muscles that attach more proximally near the HEAD of the humerus?

Back 115

intrinsic muscles

Front 116

These are the longer muscles that produce major movements of the upper arm?

Back 116

extrinsinic muscles

Front 117

The four major muscles of the upper arm (extrinsinc muscles)

dclp

Back 117

1) deltoid
2) coracobrachialis
3) lattismus dorsi
4) pectaoralis major

Front 118

If you stand with your arms outstretched laterally, these four muscles are arranged to produce movements at roughly 90 degrees from one another

Back 118

extrinsic muscles

Front 119

This muscle abducts the humerus

Back 119

deltoid

Front 120

This muscle flexes the humerus

Back 120

pectotralis major

Front 121

This muscle flexes the humerus when you bring your fists together or doing push ups?

Back 121

pectotralis major

Front 122

This muscle adducts the humerus

Back 122

coracobrachialis

Front 123

These two muscles extend the humerus as when rowing a boat, and also medially rotate the humerus?

Back 123

lattissimus dorsi and teres major

Front 124

These are humerus shaft muscles
and they do what?

Back 124

extrinsic muscles

abduct, adduct, flex, extend the humerus

Front 125

There are four muscles that orginate at the scapula and insert to the proximal humerus. They form the what...

Back 125

intrinsic muscles often called the rotator cuff muscles

Front 126

This is a tendinous support that holds the humeral head in the shallow glenoid fossa of the scapula

Back 126

rotator cuff

Front 127

What holds the place of the humeral head in of the scapula?

Back 127

glenoid fossa

Front 128

What does the glenoid fossa of the scapula hold and support?

Back 128

humeral head

Front 129

Name the three muscles that attach from the posterior surface of the scapula and insert on the greater tubercle of the humerus.

Back 129

1) supraspinatus
2) infraspinatus
3) teres minor

Front 130

Name the four intrinsic muscles

Back 130

1) supraspinatus
2) infraspinatus
3) teres minor
4) subscapularis

Front 131

What kind of muscles form the rotator cuff muscles?

Back 131

intrinsic muscles

Front 132

Where does the posterior surface muscles attach to?

Back 132

greater tubercle of the humerus

Front 133

What do all three muscles of the posterior surface of the scapula (intrinsic muscles) do?

Back 133

rotate the humerus laterally

Front 134

What does the the supraspinatous muscle do?

Back 134

intrinsic muscle

abducts the humerus

Front 135

What is the single muscle that originates in the anterior subscapular fossa? Where does it attach? What does it do?

Back 135

subscapularis

lesser tubercle

medially rotates the humerus

Front 136

Which muscle attaches to the lesser tubercle of the humerus?

Back 136

subscapularis

Front 137

Which muscle attaches to the greater tubercle of the humerus?

Back 137

supraspinatis
infraspinatis
teres minor

Front 138

The brachium is seperated by which two compartments?

Back 138

anterior and posterior

Front 139

What does the anterior compartment of the brachium contain?

Back 139

flexors of the forearm (brachium)

Front 140

What does the posterior compartment of the brachium contain?

Back 140

extensors of the forearm (brachium)

Front 141

What two muscles are part of the flexor (anterior) compartment?

Back 141

brachialis, biceps brachii

Front 142

This muscle originates at the scapula and attaches to the radial tuberosity.

Back 142

biceps brachii

Front 143

Two heads

Back 143

biceps brachii

Front 144

Where do the three heads originate from?

Back 144

scapula and humerus

Front 145

Where does the triceps insert on?

Back 145

oclecranon process

Front 146

What is the insignifcant muscle that makes up the extensor compartment?

Back 146

anconeus, along with the triceps

Front 147

This origninates on the scapula and the humerus, it inserts itself on the olecranon process?

Back 147

triceps

Front 148

The anterior compartment of the antebrachium consist of?

Back 148

contains flexors of the wrist and digits

two muscles that pronate the forearm

Front 149

The posterior compartment of the antebrachium consist of?

Back 149

contains extensors of the wrist and digits

supinator of the forearm

Front 150

Exact muscles of the anterior (flexor) compartment

Back 150

1) flexor digitorum superficialis
2) pronator teres
3) flexor carpi radialis
4) palmaris longus
5) flexor carpi ulnaris

Front 151

Where do the five muscles of the flexor compartment of the antebrachium originate?

Back 151

medial epicondyle of the humerus

Front 152

The largest and deepest of the flexor compartment?

Back 152

flexor digitorum superficialis

Front 153

This muscle sends tendons to the digits allowing for the flexion of digits

Back 153

flexor digitorum superficialis

Front 154

flat muscle

and the four round muscles overlying this flat muscle?

Back 154

flexor digitorum superficialis


pronator teres, flexor carpi radialis, palmaris longus, flexor carpi ulnaris

Front 155

Order the four muscles of the flexor compartment of the antebrachium from lateral to medial.

Back 155

pronator teres, flexor carpi radialis, palmaris longus, flexor carpi ulnaris

Front 156

Medially rotates (pronates) the antebrachium

Back 156

pronator teres

Front 157

These two muscles flex the wrist

Back 157

Flexor carpi radialis
flexor carpi ulnaris

Front 158

Attaches to a thick connective tissue of the hand, palamar aponeurosis

Back 158

palmaris longus

Front 159

What is the thick connective tissue of the palm called?

Back 159

palmaris aponeurosis

Front 160

This tissue holds the skin of the palm in place

Back 160

palamaris longus

Front 161

Contraction of this muscle stablizes the palm when gripping an object.

Back 161

palamaris longus

Front 162

Where is the freely mobile skin located

Back 162

on the dorsal surface of your hand

Front 163

This muscle is wrapped around the radius so as the "unwind" when contracting turning the palm forward in opposition to the pronator teres.

Back 163

supinator

Front 164

Supinator turns the antebrachium in opposition with what muscle?

Back 164

pronator teres

Front 165

3 lateral extensors that orginate from the lateral epicondyle

Back 165

brachioradialis
extensor carpi radialis (longus and brevis)

Front 166

3 medial extensors that originate from the lateral epicondyle

Back 166

extensor digitorum
extensor digiti minimi
extensor carpi ulnaris

Front 167

The common irritation of their proximal attachement is called tennis elbow

Back 167

extensor carpi radialis (longus and brevis)

Front 168

The most lateral extensor is

Back 168

brachioradialis