name the muscles of hand?
Answers
Answer:
INTEROSSEI (DORSAL AND PALMAR)
The interossei muscles begin between the bones of the hand. There are four dorsal and three palmar interossei muscles. While all interossei bend the MCP joints, the dorsal interossei allow us to spread our fingers away from each other. The palmar interossei pull our fingers together.
The first dorsal interosseous muscle is the largest and originates from the 1st and 2nd hand bones. It forms the contour between the thumb and index finger when looking at the top of the hand and is often the first muscle to shrink in patients with severe cubital tunnel syndrome due to damage of the ulnar nerve. In addition to pulling the index finger away from the middle finger, it also pulls the thumb towards the index finger. This action provides strength and stability when pinching.
HYPOTHENAR
The hypothenar muscle group is formed by three muscles: the abductor digiti minimi, the flexor digiti minimi, and the opponens digiti minimi. They form the muscle bulk on the small finger side of the hand. The abductor allows the small finger to pull away from the ring finger. The flexor allows the small finger to bend at the MCP joint. The opponens allows us to cup our hands, bringing the small finger towards the thumb.
THENAR
The thenar muscle group is found at the base of the thumb, forming the muscle bulk on the thumb side of the hand. It is comprised of three muscles: the abductor pollicis brevis, the flexor pollicis brevis, and the opponens pollicis. The abductor pollicis brevis pulls the thumb away from the index finger, and the flexor pollicis brevis bends the thumb toward the small finger. The opponens pollicis performs one of the most important functions of the human hand: the ability to bring the thumb away from the fingers so that we can grasp objects. It helps pull the thumb away from the index finger, while rotating it, so that the tip of the thumb is opposite, or “opposes,” the tips of the other fingers. This fundamental function of the human hand is lost in severe carpal tunnel syndrome when the median nerve is damaged.
LUMBRICALS
The main role of the lumbrical muscles is to allow the fingers to straighten, although they can also help bend the MCP joints, which are at the knuckle. The name of this muscle is derived from the Greek word for earthworm.
Explanation:
hope it helps you good day!!
Answer:
intrinsic muscles
Thenar muscles
Abductor muscles
opponens muscles
Explanation
I hope it's help you