Question

Complete the following table.

Nerve	Plexus from Which It Arises	Function
Phrenic
Axillary
Musculocutaneous
Median
Radial
Ulnar
Femoral
Obturator
Sciatic
Tibial
Common fibular

Answer 1

Phrenic nerve

• Plexus from which it arises: Brachial plexus(C3-C4)
• Function: **Motor-- supplies diaphragm. **Sensory-- supply mediastinal pleura, fibrous pericardium and diaphragmatic peritoneum.

Axillary Nerve

• Plexus from which it arises: Brachial plexus(C5-C6)
• Function: **Motor-- supplies teres minor and deltoid muscles. **Sensory-- Its branch superior lateral cutaneous nerve of arm, which gives sensory supply to inferior region of the deltoid

Musculocutaneous nerve

• Plexus from which it arises: Brachial plexus(C5-C7)
• Function: **Motor-- supplies brachialis, biceps brachii and coracobrachialis muscles. **Sensory-- supply to the lateral half of anterior forearm, and a small lateral part of the posterior forearm.

Median Nerve

• Plexus from which it arises: Brachial plexus(C5-C8&T1)
• Function: **Motor-- flexor muscles in the forearm , two lateral lumbricals associated with the index and middle fingers and thenar muscles. **Sensory-- supply lateral part of the palm, lateral three and half of palmar surface of hand

Radial nerve

• Plexus from which it arises: Brachial plexus(C5-C8&T1)
• Function: **Motor-- Supplies triceps brachii, muscles of posterior compartment of forearm. **Sensory--posterior aspect of arm and forearm, posterolateral aspect of hand.

Ulnar nerve

• Plexus from which it arises: Brachial plexus(C8&T1)
• Function: ​​​​​​ **Motor-- muscles of the hand except thenar muscles and 2 lateral lumbricals, flexor carpi ulnaris and medial half of flexor digitorum profundus. **Sensory--medial one and half fingers on palmar surface.

Femoral nerve

• Plexus from which it arises: Lumbar plexus(L2-L4)
• Function: **Motor-- Leg flexion at hip, leg extension at knee. **Sensory--sensation over anterior and median parts of thigh, lateral thigh, capsule of hip joint

Obturator Nerve

• Plexus from which it arises: Lumbar plexus(L2-L4)
• Function: **Motor-- Adduction and rotation of thigh. **Sensory-- supplies medial aspect of thigh

Sciatic nerve

• Plexus from which it arises: Sacral plexus(L4-S3)
• Function: ​​​​​​​**Motor-- Tibial nerve supplies muscles of posterior compartment of leg and plantar aspect of foot. Common peroneal nerve supplies lateral and anterior compartments. **Sensory-- Tibial nerve supplies sole of foot and common peroneal nerve supplies upper surface of foot and lower leg.

Tibial Nerve

• Plexus from which it arises: Sacral plexus(L4-S3)
• Function: **Motor-- supplies muscles of posterior compartment of leg and plantar aspect of foot **Sensory-- supplies sole of foot

Common fibular Nerve

• Plexus from which it arises: Sacral plexus(L4-S2)
• Function: **Motor-- supplies lateral and anterior compartments of leg. **Sensory-- supplies lower leg and upper surface of foot.