lower and upper limb nerve innervations

Question 1

Gluteus maximus:

Answer 1

Innervation: Inferior gluteal nerve (branch of the sacral plexus).

Question 2

Gluteus medius and Tensor fasciae latae:

Answer 2

Innervation: Superior gluteal nerve (branch of the sacral plexus).

Question 3

Piriformis, Obturator internus, Superior gemellus, Inferior gemellus, Quadratus femoris:

Answer 3

Innervation: Nerve to the piriformis (branch of the sacral plexus).

Question 4

Iliopsoas:

Answer 4

Innervation: Femoral nerve (branch of the lumbar plexus).

Question 5

Sartorius, Rectus femoris, Vastus lateralis, Vastus medialis:

Answer 5

Innervation: Femoral nerve

Question 6

Biceps femoris, Semimembranosus, Semitendinosus:

Answer 6

Innervation: Sciatic nerve

Question 7

Adductor longus, Adductor magnus, Gracilis:

Answer 7

Innervation: Obturator nerve (branch of the lumbar plexus) for adductor longus and gracilis, and obturator and sciatic nerves for adductor magnus.

Question 8

Tibialis anterior, Extensor digitorum longus:

Answer 8

Innervation: Deep fibular (peroneal) nerve (branch of the sciatic nerve).

Question 9

Fibularis longus, Fibularis brevis:

Answer 9

innervation: Superficial fibular (peroneal) nerve (branch of the sciatic nerve).

Question 10

Gastrocnemius, Soleus:

Answer 10

Tibial nerve (branch of the sciatic nerve).

Question 11

Trapezius:

Answer 11

Innervation: Accessory nerve (cranial nerve XI) and branches of the cervical plexus (specifically the spinal accessory nerve).

Question 12

Deltoid

Answer 12

Innervation: Axillary nerve (branch of the brachial plexus).

Question 13

Serratus anterior:

Answer 13

Innervation: Long thoracic nerve (from roots of C5-C7).

Question 14

Pectoralis major:

Answer 14

Innervation: Medial pectoral nerves (from the brachial plexus, specifically from anterior divisions of spinal nerves C5-T1).

Question 15

Latissimus dorsi:

Answer 15

Innervation: Thoracodorsal nerve (from posterior cord of the brachial plexus).

Question 16

Teres major:

Answer 16

Innervation: Lower subscapular nerve (from the posterior cord of the brachial plexus).

Question 17

Supraspinatus and Infraspinatus:

Answer 17

Innervation: Suprascapular nerve (from the upper trunk of the brachial plexus).

Question 18

Teres minor:

Answer 18

Innervation: Axillary nerve.

Question 19

Subscapularis:

Answer 19

Innervation: Upper and lower subscapular nerves (from the posterior cord of the brachial plexus).

Question 20

Coracobrachialis, Brachialis, Biceps brachii, Brachioradialis:

Answer 20

Innervation: Musculocutaneous nerve (from the lateral cord of the brachial plexus).

Question 21

Triceps brachii:

Answer 21

Innervation: Radial nerve (from the posterior cord of the brachial plexus).

Question 22

Anterior compartment (forearm) muscles:

Answer 22

Innervation: Median nerve (from the medial and lateral cords of the brachial plexus).

Ulnar nerve: flexor carpi ulnaris and the ulnar half of the flexor digitorum profundus.

Question 23

Posterior compartment (forearm) muscles:

Answer 23

Innervation: Radial nerve.