Ch11

Question 1

trapezius

Answer 1

Stabilizies, elevates, retracts, and roates scapula. Accessory Nerve, C3 C4.

Question 2

latissimus dorsi

Answer 2

Prime mover of arm extension; adduction and medial rotation of arm. Thoracodorsal nerve C6-C8.

Question 3

levator scapulae

Answer 3

Elavates and adducts scapula. Cervical spinal nerves and dorsal scapular nerve C3-C5.

Question 4

rhomboid major and minor

Answer 4

Stabilize scapula. Dorsal scapular nerve C4-C5.

Question 5

pectoralis major

Answer 5

Prime mover of arm flexion; rottates amr medially; adducts arm. Lateral and medial pectoral nerves C5-C8 and T1.

Question 6

pectoralis minor

Answer 6

With ribs, protracts and roates scapula downward. Medial and lateral pectoral nervers C6-C8.

Question 7

serratus anterior

Answer 7

Rotates scapula upward. Long thoracic nerve C5-C7.

Question 8

deltoid

Answer 8

Prime mover of arm abduction when all its fivers contract simultaneously. Axillary nerve C5-C6

Question 9

teres major

Answer 9

Extends, medially roates, and adducts the arm. Lower subscapular nerve C5-C7.

Question 10

supraspinatus

Answer 10

Medically rotates arm. Supracapular nerve C3-C6.

Question 11

infaspinatus

Answer 11

Laterally rotates arm. Suprascaoular nerve C3-C6.

Question 12

teres minor

Answer 12

Laterally rotates arm. Axillary Nerve C5 and C6.

Question 13

coracobrachialis

Answer 13

Flexsion and adduction of arm. Musculocutaneous nerve C5-C7.

Question 14

biceps brachii

Answer 14

Flexes and supinates forearm. Musculocutaneous nerve C6-C8.

Question 15

brachialis

Answer 15

Flexes forearm. Muscilocitaneous nerve.

Question 16

triceps brachii

Answer 16

Powerful forearm extensor. Radia Nerve C6-C8.

Question 17

adductor pollicis

Answer 17

Adducts and helps to oppose thumb. Ulnar Nerve C8 and T1.

Question 18

psoas major

Answer 18

Prime mover in thigh flexion and in flexing trunk, also causes lateral flexsion of vertebral column. Ventral rami L1-L3.

Question 19

iliacus

Answer 19

Prime mover in though flexion and in flexing trunk. Femoral nerve L2 and L3.

Question 20

sartorius

Answer 20

Flexes, abducts, and laterally rotates though; flexes leg. Femoral nerve L2 and L3.

Question 21

quadriceps femoris

Answer 21

Inserts into the patella and then via the patellar ligament into tibial tuberosity. Femoral nerve.

Question 22

adductor brevis

Answer 22

Adducts and medially rotates thigh. Obturator nerve L2 and L3.

Question 23

adductor mangus

Answer 23

Adducts and medially rotates and flexes thigh, thigh extension. Obturator nerve and sciatic nerve :2-L3.

Question 24

gluteus maximus

Answer 24

Major extensor of thigh. Inferior gluteal nerve (L2-S2)

Question 25

piriformis

Answer 25

Rotates extended though laterally. L4-S1

Question 26

semitendinosus

Answer 26

extends though and flexes leg. Sciatic nerve-tibial nerve portionL5-S2.

Question 27

semimembranosus

Answer 27

Extends thgouh and flexes leg. Sciatic nerve-tibial nerve portion L5-S2.

Question 28

biceps femoris

Answer 28

Extends though and flexes leg. Sciatic nerve-tibial nerve to long head, common fibular nerve to short head L5-S2.

Question 29

gastrocnemius

Answer 29

Planter flexes foot. Tibial nerve S1 and S2.

Question 30

soleus

Answer 30

Planter flexes foot. Tibial nerve S1 and S2.

Question 31

genioglossus

Answer 31

Protracts tongue. Hypoglossal nerve.

Question 32

hyoglossus

Answer 32

Depresses tongue. Hypoglossal nerve.

Question 33

styloglossus

Answer 33

Retracts ande elevates tongue. Hypoglossal nerve.

Question 34

digastric

Answer 34

Open mouth and depress mandible. Mandibular of trigemeinal for anterior belly amd facial nerve for posterior belly.

Question 35

stylohyoid

Answer 35

Elevates and retracts hyoid. Facial nerve.

Question 36

mylohyoid

Answer 36

Elevates and retracts hyoid. Facial nerve.

Question 37

geniohyoid

Answer 37

Elevates and protracts the hyoid. Facial nerve.

Question 38

sternohyoid

Answer 38

Depresses larynx and hyoid bone if mandible is fixed. C1-C3 through ansa cervicalis.

Question 39

sternothyroid

Answer 39

Depresses larynx and hyoid bone. C1-C3 through ansa cervicalis.

Question 40

omohyoid

Answer 40

Depresses and retracts hyoid bone. C1-C3 through ansa cervicalis.

Question 41

thyrohyoid

Answer 41

Depresses hyoid bone or elevates larny if hyoid is fixed. First cervical nerve via hypoglossal.

Question 42

orbicularis oculi

Answer 42

Closes eye. Facial nerve.

Question 43

oribularis oris

Answer 43

Closes lips. Facial nerve.

Question 44

buccinator

Answer 44

Compresses cheek. Facial nerve.

Question 45

sternocleidomastoid

Answer 45

Flexes and laterally rotates the head. Accesoory Nerve, cervical spinal nerves C2 and C3.

Question 46

scalene

Answer 46

elevate first two ribs. Cervical spinal nerves.

Question 47

external oblique

Answer 47

Flex vertebral column and compress abdominal wall. Intercostal nerve T7-T12.

Question 48

internal oblique

Answer 48

Flex vertebral column and compress abdominal wall. Intercostal nerve. T7-T12 and L1.

Question 49

rectus abdominis

Answer 49

Flex and rotate lumbar region of vertebral column. Intecostal nerves T6 or T7-T12.

Question 50

transversus abdominis

Answer 50

Compresses adbominal contents. Intercostal nerves T7-T12 and L1.

Question 51

erector spinae

Answer 51

Prime mover of bact extension.