What area of the hand does the median nerve give sensory innervation?

The median nerve also provides sensory innervation to the dorsal aspect (nail bed) of the distal first two digits of the hand, the volar aspect of the thumb, index, middle, and half of the ring finger, the palm, as well as the medial aspect of the forearm.

What does the median nerve supply in the hand?

The median nerve provides motor (movement) functions to the forearm, wrist and hand. It also sends touch, pain and temperature sensations from the lower arm and hand to the brain. A pinched median nerve can cause carpal tunnel syndrome.

What is the sensory distribution of the median nerve?

The sensory supply of the median nerve includes: The skin of the palmar and distal dorsal aspects of the lateral three-and-the-half digits and adjacent palm. The skin of the palmar and distal dorsal aspects of the thumb and radial half of 2nd digit.

What are the 4 sensory distributions of the hand?

There are 4 nerves coming into the general area of the hand:

posterior antebrachial cutaneous.
radial.
ulnar.
median.

Which of the following forearm and hand muscles is are innervated by the median nerve?

The median nerve provides motor innervation to the pronator teres, flexor carpi radialis, palmaris longus, and flexor digitorum superficialis. The only muscle in the anterior compartment not innervated by the median nerve is the flexor digitorum profundus.

What nerve Innervates the back of the hand?

radial nerve
The radial nerve divides into a deep branch, which becomes the posterior interosseous nerve, and a superficial branch, which goes on to innervate the dorsum (back) of the hand.

What fingers are affected by the median nerve?

The median nerve provides feeling and movement to the thumb side of the hand. This includes the palm, thumb, index finger, middle finger, and thumb side of the ring finger. The area in your wrist where the nerve enters the hand is called the carpal tunnel.

What is the median nerve in the wrist?

The median nerve runs from your forearm through a passageway in your wrist (carpal tunnel) to your hand. It provides sensation to the palm side of your thumb and fingers, except the little finger. It also provides nerve signals to move the muscles around the base of your thumb (motor function).

What nerve Innervates the thumb and index finger?

the median nerve
In the hand, the median nerve supplies the thenar eminence — the muscles at the base of the thumb — with nerves. It also supplies nerves to the lumbrical muscles to the index and middle fingers. The median nerve provides sensation to the thumb side of the palm, the thumb, index, middle and half of the ring finger.

What nerve controls the wrist?

The radial nerve travels down the arm and supplies movement to the triceps muscle at the back of the upper arm. It also provides extension to the wrist, and helps in movement and sensation of the wrist and hand.

What happens when the median nerve is compressed?

Peripherally, the median nerve can become compressed under the fascial sheath of the flexor retinaculum, which often causes burning pain, numbness, and tingling (neuropathic pain). This condition is known as entrapment syndrome or carpal tunnel syndrome.

What is the sensory supply of the median nerve?

Where is the median nerve innervated in the hand?

What is the normal sensory distribution of the thumb?

– sensory distribution includes thumb, radial 2 1/2 fingers, and the corresponding portion of palm. – w/ intact nerve, thumb e thcan be pronated, lining up nails at or near 180 deg; – w/ median nerve palsy, thumb can’t be pronated & nail is < 100 deg

What are the roots of the median nerve?

The skin of the palmar and distal dorsal aspects of the lateral three-and-the-half digits and adjacent palm The nerve roots of the median nerve are from the ventral rami of the C6-T1 nerves. The median nerve is formed by the unification of the medial and lateral roots.