Human Anatomy & Physiology Laboratory OER

Identify the following cranial and peripheral nerves. For cranial nerves, name and number are required.

1. CN I Olfactory
2. CN II Optic
3. CN III Oculomotor
4. CN IV Trochlear
5. CN V Trigeminal
6. CN VI Abducens
7. CN VII Facial
8. CN VIII Vestibulocochlear
9. CN IX Glossopharyngeal
10. CN X Vagus
11. CN XI Spinal Accessory
12. CN XII Hypoglossal
13. Thoracodorsal n.
14. Axillary n
15. Musculocutaneous n
16. Median n
17. Ulnar n
18. Radial n
19. Superficial Branch of Radial n
20. Deep Branch of Radial n
21. Posterior Interosseous n
22. Femoral n
23. Sciatic n
24. Tibial n
25. Common Fibular n
26. Superficial Fibular n
27. Deep Fibular n

• Models
  •  Upper Extremity model
• Videos
  • Cranial nerves video
  • Upper extremity model video
• Virtual Lab on McGraw Hill
  • None
• OpenStax Human Anatomy and Physiology textbook
  • Chapter 16.3
  • Chapter 13.4

*all nerves are paired

1. CN I Olfactory - sensory cranial nerve; originates in the olfactory epithelium; does not converge with the brainstem, responsible for the sense of smell
2. CN II Optic - sensory cranial nerve; originates in the retina of the eye; does not converge with the brainstem, responsible for vision
3. CN III Oculomotor -  motor cranial nerve; originates in the midbrain; responsible for movement of the eye by controlling four of the six extraocular muscles, constriction of the pupil, focusing the eyes and the position of the upper eyelid.
4. CN IV Trochlear -  motor cranial nerve; originates in the midbrain; responsible for eye movement by controlling extraocular muscles
5. CN V Trigeminal -  mixed cranial nerve; originates in the pons; responsible for cutaneous sensations of the face and controlling the muscles of mastication
6. CN VI Abducens -  motor cranial nerve; originates at the pontomedullary junction; responsible for eye movement by controlling extraocular muscles
7. CN VII Facial -  mixed cranial nerve; originates at the pontomedullary junction; responsible for the muscles involved in facial expressions, as well as part of the sense of taste and the production of saliva
8. CN VIII Vestibulocochlear -  sensory cranial nerve; originates at the pontomedullary junction; responsible for the senses of hearing and balance
9. CN IX Glossopharyngeal - mixed cranial nerve; originates in the medulla; responsible for controlling muscles in the oral cavity and upper throat, as well as part of the sense of taste and the production of saliva
10. CN X Vagus - mixed cranial nerve; originates in the medulla; responsible for contributing to homeostatic control of the organs of the thoracic and upper abdominal cavities
11. CN XI Spinal Accessory - motor cranial nerve; originates in the medulla; responsible for controlling the muscles of the neck, along with cervical spinal nerves
12. CN XII Hypoglossal -  motor cranial nerve; originates in the medulla; responsible for controlling the muscles of the lower throat and tongue
13. Thoracodorsal n. (aka middle subscapular nerve) - nerve of the brachial plexus; pure motor nerve of the latissimus dorsi muscle (extension, rotation, and adduction of the arm)
14. Axillary n. - nerve of the brachial plexus; mixed nerve located in the axilla; innervates important muscles of the upper limb and parts of the skin within the axillary region and the glenohumeral joint
15. Musculocutaneous n - mixed nerve of the brachial plexus; located on the anterior surface of the arm/forearm; innervates brachialis, biceps, humerus and elbow joint; flexes the elbow
16. Median n. - mixed nerve of the brachial plexus; arises in the axillary region and passes distally through the arm, forearm and the carpal tunnel into the hand; performs both coarse and fine movements of the upper limb (ex: thumb opposition) 
17. Ulnar n. - mixed nerve of the brachial plexus; courses distally through the axilla, arm and forearm into the hand; provides motor innervation to various muscles of the forearm and hand and sensory supply to the skin of the hand.
18. Radial n. - mixed nerve of the brachial plexus; largest nerve of upper limb and the most commonly injured nerve of the upper extremity; courses distally through the axilla and arm posteriorly and terminates in the forearm by dividing into superficial and deep branches 
19. Deep Branch of Radial n.- terminal branch of the radial nerve, provides motor supply for the posterior muscles of the arm and forearm (mostly the extensor muscles of the hand)
20. Superficial Branch of Radial n. -  terminal branch of the radial nerve, provides sensory supply of the skin of the arm, forearm and hand.
21. Posterior Interosseous n. (aka dorsal interosseous nerve) - continuation of the deep branch of the radial nerve after it penetrates the supinator muscle; supplies the majority of the muscles in the posterior compartment of the forearm.
22. Femoral n. - mixed nerve; largest branch of the lumbar plexus; emerges from the lower lateral border of the psoas major, descends beneath the midpoint of the inguinal ligament to enter the femoral triangle, coursing lateral to the femoral artery and vein; innervates the muscles and skin of the hip and thigh.
23. Sciatic n. - mixed nerve; largest nerve in the human body; arises in the lumbosacral region from the sacral plexus, descends through the posterior aspect of the thigh and before entering the popliteal fossa, the nerve terminates by splitting into two large terminal branches: the tibial nerve and common fibular (peroneal) nerve.
24. Tibial n.- mixed nerve; terminal branch of sciatic nerve; descends from the popliteal fossa into the posterior compartment of the leg and enters the sole of the foot; supplies all the muscles in the posterior compartment of the leg, both superficial and deep.
25. Common Fibular n. -  mixed nerve; terminal branch of sciatic nerve; courses inferolaterally through the popliteal fossa, reaches the anterior compartment of the leg and divides into the superficial fibular (peroneal) nerve and deep fibular (peroneal) nerve. 
26. Superficial Fibular (peroneal) n. - terminal branch of Common Fibular nerve; supplies the muscles of the lateral compartment of the leg and provides sensation to the anterolateral aspect of the leg. 
27. Deep Fibular (peroneal) n. - terminal branch of Common Fibular nerve; mainly supplies the muscles of the anterior compartment of the leg and the dorsum of the foot. 

Module 14 McGraw Hill Connect APR Cadaver Activity