A&p Chapter 11

Front 1

Muscles produce movement by exerting force on ____
which in turn pull on bones and other supporting structures like the skin.

Back 1

tendons

Front 2

The attachment of a muscle's tendon to the stationary, usually proximal bone, is called the?

Back 2

origin

Front 3

Origins and Insertions

Back 3

Origins and Insertions

Front 4

The origin of the Biceps is the ____ and the insertion is the ____?

Back 4

Origin:Scapula
Insertion: Radius

Front 5

The action of the Biceps is to?

Back 5

pronate and flex the arm

Front 6

The origin of the Triceps is the ____ and the insertion is the ____?

Back 6

Origin:Scapula near shoulder joint Upper lateral and posterior sites of humerus
Posterior surface of humerus
Insertion: Back of olecranon process of ulna

Front 7

The action of the Triceps is to?

Back 7

Action: Straighten (extend) the arm

Front 8

Muscles, tendons, bones, and joints can form what three different types of levers in the body?

Back 8

First-class levers, Second class levers, and Third class levers.

Front 9

In a lever, the point of movement called the ____, is acted on by two different forces: Effort and load.

Back 9

fulcrum

Front 10

There are few first-class levers
in the body. This pic shows a example

Back 10

first-class levers

Front 11

What levers always provide a distinct mechanical advantage in producing force?
Like a pry bar

Back 11

Second class levers

Front 12

What levers are the most common and favor speed and range of motion over maximum force?

Back 12

Third-class levers

Front 13

Most skeletal muscles are arranged in opposing ____ pairs at joints.

Back 13

antagonistic

Front 14

Within opposing pairs, the prime mover or ____ is the muscle primarily responsible for causing the desired movement.

Back 14

agonist (“the leader”)

Front 15

The ____ stretches and yields to the effects of the prime mover.

Back 15

antagonist

Front 16

In flexing the forearm at
the elbow, the ____
is the prime mover or
agonists, and the ____ ____ is the antagonist.

Back 16

brachialis, triceps
brachii

Front 17

What are muscles used to prevent unwanted movements at intermediate joints, or otherwise aid the movement of the prime mover?

Back 17

Synergists

Front 18

What muscles are a type of synergist muscle that are used to steady the proximal joints of a prime mover?

Back 18

Fixator

Front 19

Some of the more common muscles of the head and neck include:

Back 19

Orbicularis oris
Extraocular muscles
Sternocleidomastoid
Rectus abdominus
External oblique

Front 20

The muscles of facial expression move ____ rather than bones around a joint.

Back 20

skin

Front 21

Action: Closes and
protrudes lips for kissing
Origin: Surrounding the
opening of the mouth
Insertion: The skin at the
corner of the mouth.
What Muscle is this?

Back 21

Orbicularis oris

Front 22

Origin: Maxilla and zygomatic arch
Insertion: Mandible
Action: Closes the mouth
What muscle is this

Back 22

Masseter

Front 23

3 pair give each eye very
precise movement
Origin: Back of the orbit
Insertion: Different parts
of the eyeball
Action: Precise and rapid
movement of the eyes
What muscle is this?

Back 23

The Extraocular muscles

Front 24

The Extraocular muscles

Back 24

The Extraocular muscles

Front 25

Some of the more common muscles that originate on the trunk include the ones shown

Back 25

Some of the more common muscles that originate on the trunk

Front 26

Origin: Clavicle and sternum
Insertion: Proximal humerus
Action: Adducts and medially rotates thearm at the shoulder joint
What muscle is this?

Back 26

Pectoralis major

Front 27

Origin: Ribs 3–5
Insertion: Coracoid process of the scapula
Action: Internally rotates the shoulder
What muscle is this?

Back 27

Pectoralis minor

Front 28

Origin: Lateral clavicle and upper scapula
Insertion: Deltoid tuberosity
on the shaft of the humerus
Action: Abducts, flexes, and
medially rotates the upper arm
at the shoulder joint
What muscle is this?

Back 28

Deltoid Muscle

Front 29

Deltoid

Back 29

Deltoid

Front 30

Origin: Occipital bone and
cervical spine
Insertion: Clavicle, scapula and
lower thoracic vertebrae
Action: Supports the arm and
moves the scapula up, down,
in, and out
What muscle is this?

Back 30

Trapezius

Front 31

Trapezius

Back 31

Trapezius

Front 32

What is the Origin, Insertion and Action of the Sternocleidomastoid?

Back 32

Origin: Clavicle and sternum
Insertion: Mastoid
process of temporal bone
Action: Flex and
rotate the head

Front 33

Origin: Thoracic and lumbar
vertebrae and the iliac bone
Insertion: Mid-humerus
Action: Drives arm inferiorly
and posteriorly (the
swimmer’s muscle)

Back 33

Latissimus dorsi

Front 34

Latissimus dorsi

Back 34

Latissimus dorsi

Front 35

Anterior abdominal wall:
Origin: Pubic bone
Insertion: Ribs and sternum

Back 35

Rectus abdominis

Front 36

Anterior abdominal wall:
Origin: Ribs 5–12
Insertion: Iliac crest and
linea alba
Actions: Flexes vertebral column and compresses abdomen

Back 36

External oblique

Front 37

The main muscle of inspiration is the?
Origin: Inferior 6 ribs
(anteriorly) and lumbar
vertebrae (posteriorly)
Insertion: Centraltendon

Back 37

diaphragm

Front 38

What is the Origin, insertion, and action of the Biceps brachii?

Back 38

Origin: Scapula
Insertion: Radius
Action: Flexes and
supinates forearm at
elbow joint and flexes
arm at shoulder joint

Front 39

What is the origin, insertion and action of the Brachialis?

Back 39

Origin: Distal anterior surface of humerus
Insertion: Ulna
Action: Flexor of forearm at elbow

Front 40

What is the origin, insertion, and action of the Triceps brachii?

Back 40

Origin: Scapula and posterior surface of humerus
Insertion: Olecranon
process of ulna
Action: Extends
forearm at elbow
joint and arm
at shoulder joint

Front 41

Triceps brachii

Back 41

Triceps brachii

Front 42

What is the origin, Insertion, and Action of the Brachioradialis?

Back 42

Origin: Humerus
Insertion: Distal radius
Action: Supinates the forearm
at the radioulnar joint

Front 43

What is the origin, insertion, and action of the Gluteus maximus?

Back 43

Origin: Iliac crest, sacrum, and coccyx
Insertion: Femur
Action: Extends and laterally rotates thigh at hip joint

Front 44

Gluteus maximus

Back 44

Gluteus maximus

Front 45

What is the origin, Insertion, and action of the Quadricep group (Rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis)?

Back 45

Origin: Iliac spine and proximal femur
Insertion: Patella and proximal tibia
Action: Flexes thigh at high joint and extends leg at knee joint

Front 46

Muscles that move the femur, tibia, and fibula
Hamstring group

Back 46

Muscles that move the femur, tibia, and fibula
Hamstring group

Front 47

What is the origin, and insertion of the Hamstring group: (Biceps femoris,
Semitendinosus, and Semimembranosus)?

Back 47

Origin: Ischial tuberosity
Insertion: Proximal tibia and fibula

Front 48

What is the origin, insertion, and action of the Tibialis anterior?

Back 48

Origin: Tibia
Insertion: First cuneiform
and first metatarsal
Action: Dorsiflexes and
inverts the foot

Front 49

Tibialis anterior

Back 49

Tibialis anterior

Front 50

The Muscles that plantar flex the foot at the ankle joint are called?

Back 50

Gastrocnemius and soleus muscles function as one – often called the gastrocsoleus muscle

Front 51

What is the origin and insertion of the Gastrocnemius and soleus muscles?

Back 51

Origin: Femur, capsule of
knee, and head of fibula
Insertion: Calcaneus by way
of calcaneal (Achilles) tendon

Front 52

Gastrocnemius and soleus muscles

Back 52

Gastrocnemius and soleus muscles

Front 53

Major Skeletal Muscles Anterior View

Back 53

Major Skeletal Muscles

Front 54

Major Skeletal Muscles

Back 54

Major Skeletal Muscles