Branches of the Ulnar & Median Nerves [in Hand]

The video tutorial explains the branching of the median and ulnar nerves in the forearm and hand. It covers the sensory and motor functions of these nerves, detailing the specific branches and their roles. The median nerve is associated with the thenar eminence and lateral lumbricals, while the ulnar nerve is linked to the hypothenar muscles and interossei. The tutorial also highlights the sensory regions innervated by these nerves on both the palmar and dorsal aspects of the hand.

Which nerve is closer to the thumb side of the hand?

• Ulnar nerve

• Radial nerve

• Median nerve

• Sciatic nerve

What is the primary function of the recurrent branch of the median nerve?

• Sensory innervation of the palm

• Motor innervation of the thenar muscles

• Sensory innervation of the dorsal hand

• Motor innervation of the hypothenar muscles

Which digits are innervated by the lateral lumbricals?

• Digits 3 and 4

• Digits 2 and 3

• Digits 1 and 2

• Digits 4 and 5

What is the function of the palmar digital branches of the median nerve?

• Sensory innervation of the medial 1.5 digits

• Sensory innervation of the lateral 3.5 digits

• Motor innervation of the hypothenar muscles

• Motor innervation of the thenar muscles

Which branch of the ulnar nerve supplies the skin of the medial dorsum of the hand?

• Digital branch

• Palmar cutaneous branch

• Dorsal cutaneous branch

• Recurrent branch

What is the role of the hypothenar muscles innervated by the ulnar nerve?

• Flexion and opposition of the thumb

• Abduction and flexion of the 5th digit

• Adduction of the thumb

• Extension of the 2nd digit

Which muscles are innervated by the interossei branches of the ulnar nerve?

• Thenar muscles

• Interossei muscles

• Hypothenar muscles

• Lumbrical muscles