FORELIMB MUSCLES

Question 1

Which muscles are responsible for forelimb adduction?

Answer 1

1. superficial pectoralis
2. deep pectoralis
3. subscapularis
4. coracobrachialis

Question 2

Which muscles are responsible for forelimb abduction?

Answer 2

1. trapezius
2. ulnaris lateralis (antebrachium)
3. abductor digiti I longus (digit I)

Question 3

Which muscles are responsible for shoulder flexion?

Answer 3

1. deltoideus
2. teres minor
3. infraspinatous~
4. teres major
5. triceps long head

~ can help with either flexion OR extension

Question 4

Which muscles are responsible for shoulder extension?

Answer 4

1. supraspinatous
2. infraspinatous ~
3. subscapularis
4. coracobrachialis
5. biceps brachii

~ can help with either flexion OR extension

Question 5

Which muscles are respinsible for elbow flexion?

Answer 5

1. biceps brachii
2. brachialis
3. supinator
4. pronator teres

Question 6

Which muscles are respinsible for elbow extension?

Answer 6

1. triceps brachii (lateral, medial, accessory, and long heads)
2. anconeus
3. Tensor fasciae antebrachii

Question 7

Which muscles are responsible for carpus flexion?

Answer 7

1. ulnaris lateralis
2. flexor carpi radialis
3. superficial digital flexor
4. flexor carpi ulnaris
5. deep digital flexor

Question 8

What muscles are responsible for carpus extension?

Answer 8

1. Extensor carpi radialis
2. common digital extensor
3. lateral digital extensor
4. abductor digiti I longus

Question 9

What muscles are responsible for digital flexion? (forelimb)

Answer 9

1. superficial digital flexor
2. deep digital flexor

Question 10

What muscles are responsible for digital extension? (forelimb)

Answer 10

1. common digital extensor
2. lateral digital extensor

Question 11

which of the muscles of the antebrachium have their proximal attachment on the medial epicondyle of the humerus?

Answer 11

flexor carpi ulnaris
superficial digital flexor
flexor carpi radialis
pronator teres
deep digital flexor
anconeus

Question 12

co-contraction of which two structures lead to the protrusion/extension of a cats claws from the forepaw?

Answer 12

deep digital flexor
digital extensors

Question 13

which two muscles function to elevate the forelimb?

Answer 13

rhomboideus
trapezius

Question 14

name one muscle which attaches to the acromion

Answer 14

omotransversarius
deltoideus
trapezius

Question 15

A fracture of the medial epicondyle of the humerus would most directly affect muscles involved in:

Answer 15

carpal and digital flexion

Question 16

which head of the triceps brachii attaches to the scapula?

Answer 16

long

Question 17

The superficial and deep digital flexor tendons are maintained in position in the carpal canal as they cross the antebrachiocarpal joint by the:

Answer 17

flexor retinaculum