Lab Quiz 5

Question 1

What is the branch that if damaged would result in the inability to extend the arm and the forearm?

Answer 1

Radial Nerves

Question 2

What is the muscle that is responsible for flexing the forearm and wrist and inserts into the aponeurosis of the palm?

Answer 2

Palmaris Longus (median nerve)

Question 3

What is the distal muscle that is respobsible for pronating the forearm?

Answer 3

Pronator Quadratus (median nerves)

Question 4

What is the forearm flexor that is innervated by the radial nerve?

Answer 4

Brachioradialis (radial nerve)

Question 5

What is the branch that pierces the Coraobrachialis muscle?

Answer 5

Musculocutaneous nerve

Question 6

What is the muscle that if damaged would result in an inability to extend the 2nd, 3rd, 4th, and 5th digits?

Answer 6

Extensor digitorum (radial nerve)

Question 7

Which branch that if damaged would result in wasting of the medial side of the hand?

Answer 7

Ulnar nerves (hypothenar eminence)

Question 8

What is the only forearm flexor that is not innervated by the median nerve?

Answer 8

Flexor carpi ulnaris (ulnar nerve)

Question 9

What is the branch that if damaged would result in the inability to pronate the forearm?

Answer 9

Median nerve

(pronator teres and pronator quadratus)

Question 10

What is the structure that is used as the reference for naming the cords?

Answer 10

Axillary Artery

Question 11

What branch that receives nerve fibers from both the lateral and medial cords?

Answer 11

Median nerve

Question 12

Your patient has weakened shoulder abduction and forearm extension, What cord is most likely damaged?

Answer 12

Posterior Cord (Axillary and Radial nerve)

Question 13

What is the group of muscles that is responsible for thumb opposition?

Answer 13

Thenar eminence (median nerve) and Adductor Pollicis (median nerve)

Question 14

What is the muscle that extends the 2nd digit?

Answer 14

Extensor indicis (radial nerve)

Question 15

What is the muscle responsible for supinating the forearm and is innervated by the radial nerve?

Answer 15

Supinator

Question 16

What is the muscle that extends and radially deviates that wrist?

Answer 16

Extensor carpi radialis longus or brevis

Question 17

What is the muscle if damaged will result in an inability to flex the 2nd, 3rd, 4th, 5th DIP joints?

Answer 17

Flexor digitorum profundus (median and ulnar nerve)

F

Question 18

What is the cord that if damaged would affect the ulnar nerve?

Answer 18

Medial cord

Question 19

What are the 5 branches?

Answer 19

1. Musculocutaneous
2. Axillary
3. Median
4. Radial
5. Ulnar

Question 20

What are the name of the 3 cords?

Answer 20

1. Lateral
2. Posterior
3. Medial

Question 21

What are the names of the 3 trunks?

Answer 21

1. Superior
2. Middle
3. Inferior

Question 22

What are the roots connected to the superior trunks?

Answer 22

1. C5
2. C6

Question 23

What are is the root connected to the middle trunks?

Answer 23

C7

Question 24

What are the roots connected to the inferior trunks?

Answer 24

1. C8
2. T1

Question 25

Which of the cords are anterior to the posterior cord?

Answer 25

Superior, middle, and inferior are anterior to the posterior cords.

Question 26

Which trunks are posterior to the lateral cords?

Answer 26

Superior and middle trunks are posterior to the lateral cords.

Question 27

Which trunk is posterior to the medial cord?

Answer 27

Inferior trunks are posterior to the medial cords.

Question 28

How are the upper limb muscles and nerves broken up?

Answer 28

1. Branches 2. Cords 3. DIvisions 4. Trunks 5. Roots

Question 29

What muscles are connected to the musculocutaneous branches?

Answer 29

* Biceps branchi muscle * Coracobrachialis muscle * Brachialis muscle

Question 30

What are the muscles connected to the median branches?

Answer 30

Most forearm flexors and pronators except the 1 1/2 muscle. Innervated by the ulnar nerve

Question 31

What are the muscles connected to the radial branches?

Answer 31

Posterior extensor muscles of the arm and extensors of the forearm.

Question 32

What muscles are connected to the ulnar branches?

Answer 32

Most hand muscles, Flexor carpi ulnaris muscles, 1/2 of flexor digitorum profundous muscle.

Question 33

What muscles and nerves contain lateral cords?

Answer 33

Lateral pectoral nerves (pectoralis major muscle and pectroalis minor muscle)

Question 34

What nerves and muscles are in posterior cords?

Answer 34

Lower scapular nerves, Teres mejor upper and lower scapular nerves, subscapularis muscle (thoracodorsal nerves - latissimus dorsi muscle)

Question 35

What are the nerves and muscles connected to the medial cords?

Answer 35

Medial pectoral nerve and pectoralis minor muscle

Question 36

What are the nerves and muscles of superior trunks?

Answer 36

Suprascapular nerves (supraspinatus muscle and infraspinatus muscle)

Question 37

What nerves and muscles are located on root C5?

Answer 37

Dorsal scapular nerves Rhomboids and leveator scapula muscle

Question 38

What nerves and muscles are located on the root C7?

Answer 38

Long thoracic nerve and serratus anterior muscle.