Exam 3 Muscles

Question 1

orbicularis oculi

Action

Answer 1

Action:

blinking, squinting

Question 2

orbicularis oris

Action

Answer 2

Action:

mouth close lips, kissing, whistling

Question 3

masseter

Origin, Insertion, Action

Answer 3

Origin:
zygomatic arch
Insertion:
lateral mandible
Action:
elevate (closes) jaw

Question 4

temporalis

Answer 4

Action:

elevate jaw

Question 5

sternocleidomastoid

Origin, Insertion, Action

Answer 5

Origin:
sternum, clavicle
Insertion:
mastoid process of temporal bone
Action:
Solo: rotate head opposite side; Together: flex head

Question 6

pectoralis major

Answer 6

Action:

Adduct arm

Question 7

deltoid

Answer 7

Action:

Abduct arm

Question 8

diaphragm

Answer 8

Action:

inspiration

Question 9

rectus abdominis
(Origin, Insertion, Action)

Answer 9

Origin:
pubic crest and symphysis
Insertion:
inferior ribs
Action:
flex vertebral column

Question 10

triceps brachii
- long head
- medial head
- lateral head
(Insertion, Action)

Answer 10

Insertion:
Ulna: olecranon process (all 3)
Action:
extends arm at elbow

Question 11

biceps brachii

Origin, Insertion, Action

Answer 11

Origin:
Scapula
Insertion:
Radial tuberosity
Action:
flexes arm at elbow & shoulder

Question 12

pronator teres

Answer 12

Action:

pronate forearm

Question 13

palmaris longus

Answer 13

Action:

Flexion at wrist

Question 14

extensor digitorum

Answer 14

Action:

extend fingers and wrist

Question 15

sartorius

Origin, Insertion, Action

Answer 15

Origin:
ilium
Insertion:
tibia
Action:
flex and rotate leg

Question 16

gracilis

Origin, Insertion, Action

Answer 16

Origin:
pubic symphysis
Insertion:
tibia
Action:
adduct, flex, rotate leg

Question 17

Rectus femoris

Origin, Insertion, Action

Answer 17

Origin:
ilium
Insertion:
tibial tuberosity
Action:
extend leg at knee

Question 18

Vastus lateralis
— medialis
— intermedius
(Origin, Insertion, Action)

Answer 18

Origin:
Femur
Insertion:
tibiali tuberosity
Action:
Extend leg at knee

Question 19

Hamstring muscles
-biceps femoris
-semimembranosus
-semitendinosus
(Origin, Insertion, Action)

Answer 19

Origin:
ischial tuberosity
Insertion:
tibia
Action:
flex leg at knee

Question 20

Tibialis anterior

Answer 20

Origin:
tibia: lateral condyle
Insertion:
1st tarsel and metatarsal
Action:
Flex foot (dorsiflexion)

Question 21

Gastrocnemius

Insertion and Action

Answer 21

Insertion:
Calcaneus
Action:
Extend foot

Question 22

Soleus

Insertion and Action

Answer 22

Insertion:
Calcaneus
Action:
Extend foot