Nerves

Question 1

How many pairs of cervical spinal nerves, where do they exit the vertebral column, and what is the exception?

Answer 1

C1 exists through the atlas. C2-C8 exit in front of their corresponding vertebrae

Question 2

What nerve branches off the second cervical spinal nerve, extends towards the ear, and innervates the skin of the neck, ear, and back of head?

Answer 2

Great auricular nerve

Question 3

Nerve that runs from the occipital part of the sternocephalicus and innervates the thoracic trapezius

Answer 3

Accessory or CN XI

Question 4

Nerve bound to the medial side of the common carotid artery

Answer 4

Vagosympathetic trunk

Question 5

What do the phrenic nerves supply?

Answer 5

The diaphragm

Question 6

What is another name of the preganglionic neuron of the SNS?

Answer 6

Ramus communicans

Question 7

What are the nerves that leave the thoracic trunk and go into the abdominal cavity

Answer 7

Splanchnic nerves

Question 8

Cranial enlargement of the sympathetic trunk in the first intercostal space

Answer 8

Cervicothoracic ganglion

Question 9

Pathway of spinal nerves post ganglionic axons to reach the thoracic limb (C6, C7, C8, T1, T2)

Answer 9

Brachial plexus

Question 10

Loop of the sympathetic trunk, cranial to the cervicothoracic ganglion

Answer 10

Ansa subclavia

Question 11

What does the ansa subclava surround

Answer 11

The subclavian artery

Question 12

Where the two branches of the ansa subclavia unite

Answer 12

Middle cervical ganglion

Question 13

The vagosympathetic trunk in the neck is within the…

Answer 13

Carotid sheath

Question 14

Nerves that leave the vagus left of the aortic arch and terminates on the larynx on the ventrolateral side of the trachea and ventromedial side of the esophagus. Sends branches to the heart, trachea, and esophagus

Answer 14

Left and right recurrent laryngeal nerve

Question 15

What does the suprascapular nerve do/supply?

Answer 15

From C6 and C7, subject to compressive injury, supplies the supraspinatus and infraspinatus

Question 16

What does the musculocutaneous nerve do/supply?

Answer 16

From C6-8, supplies the coracobrachialis, biceps brachii, and the brachialis

Question 17

Branch of the musculocutaneous nerve that is sensory to the skin on the medial forearm

Answer 17

medial cutaneuous antibrachial nerve

Question 18

What does the axillary nerve do/supply?

Answer 18

From C7-8, and supplies teres major, teres minor, deltoideus, and subscapularis

Question 19

What does the cranial lateral cutaneous brachial nerve supply?

Answer 19

skin on the lateral surface of the brachium and caudal scapular region

Question 20

What does the radial nerve do/supply?

Answer 20

From C7-8 T1-2, Supplies triceps, tensor fasciae antebrachii, and anconeus

Question 21

Where do the median and ulnar nerves arise from?

Answer 21

C8, T1-T2

Question 22

What does the median nerve supply?

Answer 22

muscles of the forearm and skin of the palmar surface of the paw

Question 23

What does the caudal cutaneous antebrachial nerve do/supply?

Answer 23

branches off of the ulnar nerve and supplies the skin of the distal medial aspect of the brachium and caudal aspect of the antebrachium

Question 24

Which four nerves innervate the skin of the antebrachium?

Answer 24

cranial surface- axillary and radial nerves
Caudal surface– ulnar nerve
Medial surface- musculocutaneous nerve

Question 25

What does the radial nerve supply?

Answer 25

the extensors of the elbow, carpus, and digital joints

Extensor carpi radialis, common digital extensor, supinator, lateral digital extensor, abductor digiti longus, and ulnaris lateralis

Question 26

What does the median nerve innervate?

Answer 26

pronator teres, pronator quadratus, flexor carpi radialis, superficial digital flexor, and heads of the deep digital flexors