FINAL OIAIN's

Question 1

What are the innervations for the trapezius, latissimus dorsi, levator scapulae, rhomboid major, and rhomboid minor muscles?

Answer 1

Trapezius - accessory nerve

Latissimus Dorsi - thoracodorsal

Levator scapulae, rhomboid major, and rhomboid minor - dorsal scapular

Question 2

Most of the superficial gluteal muscles are innervated by the _______ gluteal nerve, with the exception of which muscle>

Answer 2

superior; the gluteus Maximus is innervated by the inferior gluteal nerve.

Question 3

What is the origin for the gluteus Maximus muscle? Hint: There are 6!

Answer 3

Fascia of the gluteus medius and erector spinae, posterior ilium, dorsal sacrum, coccyx, and the sacrotuberal ligament

Question 4

Match the correct muscle to the origin.

Posterior ilium between the anterior and inferior gluteal lines.

Posterior ilium between the anterior and posterior gluteal line.

Answer 4

anterior and inferior - minimus

anterior and posterior - medius

Question 5

What two muscles both work to abduct the femur and stabilize the pelvis in a single leg stance?

Answer 5

Gluteus minimus and medius

Question 6

All deep gluteal muscles have an insertion point at the greater trochanter except:

Answer 6

quadratus femoris

Question 7

Common action of deep gluteal muscles, with the exception of the quadratus femoris muscle?

Answer 7

laterally rotate the extended hip and abduct the flexed femur

Question 8

What is the origin for the inferior gemellus muscle?

Answer 8

upper ischial tuberosity

Question 9

Which muscles of the scapula insert at the greater tubercle? Which insert at the lesser tubercle of the humerus?

Answer 9

Greater tubercle - supraspinatus, infraspinatus, teres minor Lesser tubercle - teres major, subscapularis

Question 10

Which scapular muscle is the chief medial rotator of the humerus? What are its other actions?

Answer 10

Subscapularis; can also stabilize the shoulder joint and hold the head of the humerus in the glenoid cavity

Question 11

Which scapular muscles function to hold the head of the humerus in the glenoid cavity?

Answer 11

Infraspinatus and the subscapularis muscles

Question 12

Which scapular muscle is important in preventing dislocation of the shoulder joint when load is involved?

Which muscles do lateral rotation of the humerus?

Which do medial rotation?

Which is NOT a rotator cuff muscle?

Answer 12

supraspinatus

Infraspinatus and teres minor do lateral rotation

subscapularis does medial rotation

Teres major

Question 13

The muscles of the anterior arm are mostly innervated by which nerve? The triceps brachii is innervated by which nerve?

Answer 13

Biceps brachii, brachialis, and bracobrachialis are all innervated by the musculocutaneous Triceps - radial

Question 14

What are the origins for triceps brachii?

Answer 14

Long - infraglenoid tubercle of scapula

Medial - posterior humeral shaft, distal to radial groove

Lateral - posterior humeral shaft

Question 15

Innervation for the piriformis muscle?

Answer 15

Branches of S1-S2

Question 16

Quadratus femoris origin, insertion, and action?

Answer 16

Origin - lateral ischial tuberosity

Insertion - quadrate tubercle on intertrochanteric crest

Action - laterally rotate femur

Question 17

What is the action for the infraspinatus muscle, which inserts on the greater tubercle of the humerus?

Answer 17

Lateral rotation of the humerus

Question 18

Origin, insertion, and action for the teres minor?

Answer 18

Origin - lateral border of the scapula

Insertion - greater tubercle

Action - lateral rotation of the humerus

Question 19

Origin, insertion, and action for the teres major?

Answer 19

Origin - posterior scapula at the inferior angle

Insertion - crest of lesser tubercle

Action - medially rotate, abduct, and extend the humerus

Question 20

Which muscles of the scapula both insert at the lesser tubercle of the humerus?

Which is a chief MEDIAL ROTATOR of the humerus?

Answer 20

Subscapularis and teres major

subscapularis

Question 21

Action of the coracobrachialis muscle?

Answer 21

Flexion and adduction of the humerus.

Question 22

Origin and insertion for the brachialis muscle?

Answer 22

Origin = distal humerus

Insertion = coronoid process of the ulna

Question 23

Origins for the triceps brachii muscle?

Answer 23

Lateral = posterior shaft of humerus

Long = infraglenoid tubercle of scapula

Medial = posterior shaft of humerus

Question 24

What are the insertions for the flexor carpi radialis and flexor carpi ulnaris, which are superficial muscles from the anterior forearm?

Answer 24

Flexor Carpi Radialis

• Insertion = base of second and third metacarpals

Flexor Carpi Ulnaris

• Insertion = pisiform, hamate, and base of 5th metacarpal

Question 25

Which muscle of the posterior forearm is the prime finger extender? What is the common action of the muscles in the posterior forearm?

Answer 25

Prime finger extender = extensor digitorum Common action = extend and **adduct** wrist

Question 26

What are the insertions for the extensor carpi radialis longus, extensor carpi radialis brevis, and extensor carpi ulnaris? (posterior forearm)

Answer 26

Extensor carpi radialis longus = base of 2nd metacarpal Extensor carpi radialis brevis = base of 3rd metacarpal Extensor carpi ulnaris = base of 5th metacarpal

Question 27

What is the common origin for the extensor pollicis longus, extensor pollicis brevis, abductor pollicis longus, and the extensor indicis? What is the insertion for the abductor pollicis longus?

Answer 27

Interosseous membrane Insertion - base of first metacarpal and trapezium

Question 28

The spinal accessory nerve will innervate what two muscles? What are their actions

Answer 28

Romboids and the sternocleidomastoid Action - head rotation and raising of the shoulders

Question 30

Damage to the ischial tuberosity would affect the actions of the hamstring muscles. What actions would this include?

Answer 30

Flexing the leg and extending the thigh

Question 31

The pulse of the radial artery is felt immediately lateral to which tendon?

Answer 31

Flexor carpi radialis

Question 32

What are the actions of the anterior, medial, and **posterior thigh?**

Answer 32

Anterior - Extend knee and flex hip Medial - Adduct thigh and medial rotation Posterior - flex knee and extend hip (opposite to anterior)

Question 33

Which anterior thigh muscle is responsible for external rotation and abduction - i.e - "is there gum on my shoe" motion?

Answer 33

Sartorius

Question 34

Which muscles of the anterior thigh both originate from the ASIS?

Answer 34

sartorius and rectus femoris

Question 35

The recutus femoris, vastus medialis, vastus intermedius, and vastus lateralis all insert in which region?

Answer 35

patellar and tibial tuberosity

Question 36

All muscles of the medial compartment of the thigh will insert at the ____ \_\_\_\_\_, except for the gracilis, which will insert at the ______ \_\_\_\_\_. Muscles of the medial compartment of the thigh will originate from what part of the pelvis?

Answer 36

linea aspera, medial surface of the tibia Ichial and/or pubic rami, ischial tuberosity, or the pubis

Question 37

The muscles of the posterior thigh all have a common origin at: What kind of rotation can posterior thigh muscles do, in addition to flexion of the knee and extension of the hip?

Answer 37

Ischial tuberosity; the biceps femoris has two origins and insertions - the long head is at the ischial tuberosity Biceps femoris - laterally rotate femur Semitendinosus and semimembranousus - medial rotation

Question 38

What are the origins and insertions for the biceps femoris?

Answer 38

Short origin - lateral supracondylar line, linea aspera, distal femur Long origin - ischial tuberosity Insertion - head of the fibula and lateral condyle of the tibia

Question 39

What are the insertions for the semitendinosus and semimembranousus muscles?

Answer 39

Semitendinosus - upper shaft of medial tibia Semimembranosus - medial condyle of tibia

Question 40

What are the actions of the posterior, lateral, and anterior compartments of the leg?

Answer 40

Posterior - plantarflexion, inversion of the foot, and flex toes Lateral - eversion of the foot Anterior - Dorsiflexion, invert foot, extend toes

Question 42

Which muscles of the scapula do MEDIAL ROTATION? Which do LATERAL rotation? T/F? The supraspinatus muscle does both medial and lateral rotation.

Answer 42

Medial rotation - subscapularis and teres major Lateral rotation - infraspinatus and teres minor FALSE - supraspinatus only initiates abduction