Nerves Flashcards
How many pairs of cervical spinal nerves, where do they exit the vertebral column, and what is the exception?
C1 exists through the atlas. C2-C8 exit in front of their corresponding vertebrae
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?
Great auricular nerve
Nerve that runs from the occipital part of the sternocephalicus and innervates the thoracic trapezius
Accessory or CN XI
Nerve bound to the medial side of the common carotid artery
Vagosympathetic trunk
What do the phrenic nerves supply?
The diaphragm
What is another name of the preganglionic neuron of the SNS?
Ramus communicans
What are the nerves that leave the thoracic trunk and go into the abdominal cavity
Splanchnic nerves
Cranial enlargement of the sympathetic trunk in the first intercostal space
Cervicothoracic ganglion
Pathway of spinal nerves post ganglionic axons to reach the thoracic limb (C6, C7, C8, T1, T2)
Brachial plexus
Loop of the sympathetic trunk, cranial to the cervicothoracic ganglion
Ansa subclavia
What does the ansa subclava surround
The subclavian artery
Where the two branches of the ansa subclavia unite
Middle cervical ganglion
The vagosympathetic trunk in the neck is within the…
Carotid sheath
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
Left and right recurrent laryngeal nerve
What does the suprascapular nerve do/supply?
From C6 and C7, subject to compressive injury, supplies the supraspinatus and infraspinatus
What does the musculocutaneous nerve do/supply?
From C6-8, supplies the coracobrachialis, biceps brachii, and the brachialis
Branch of the musculocutaneous nerve that is sensory to the skin on the medial forearm
medial cutaneuous antibrachial nerve
What does the axillary nerve do/supply?
From C7-8, and supplies teres major, teres minor, deltoideus, and subscapularis
What does the cranial lateral cutaneous brachial nerve supply?
skin on the lateral surface of the brachium and caudal scapular region
What does the radial nerve do/supply?
From C7-8 T1-2, Supplies triceps, tensor fasciae antebrachii, and anconeus
Where do the median and ulnar nerves arise from?
C8, T1-T2
What does the median nerve supply?
muscles of the forearm and skin of the palmar surface of the paw
What does the caudal cutaneous antebrachial nerve do/supply?
branches off of the ulnar nerve and supplies the skin of the distal medial aspect of the brachium and caudal aspect of the antebrachium
Which four nerves innervate the skin of the antebrachium?
cranial surface- axillary and radial nerves
Caudal surface– ulnar nerve
Medial surface- musculocutaneous nerve
What does the radial nerve supply?
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
What does the median nerve innervate?
pronator teres, pronator quadratus, flexor carpi radialis, superficial digital flexor, and heads of the deep digital flexors
