The Anatomy Of The Hand Dorsal Surface: Everything You Need To Know

The hand is a complex structure that performs many intricate functions. Its anatomy and range of motion are impressive to behold. But how much do you really know about the anatomy of the hand dorsal surface? This blog post will explore the anatomy and physiology of the hand dorsal surface, including its various bones, muscles, ligaments, nerves, and vessels. You’ll learn what they are and how they work together to give us movement and strength in our hands. So if you’re looking to gain a better understanding of this important area of your body, keep reading!

What is the anatomy of the hand dorsal surface?

The hand dorsal surface is the back of the hand. It includes the knuckles, metacarpophalangeal joints (MCP), and proximal interphalangeal joints (PIP). The muscles that move the fingers are located on the dorsal surface of the hand. The tendons that attach these muscles to the bones are also located on the dorsal surface. The skin on the dorsal surface of the hand is thin and has a lot of sensation.

The bones of the hand dorsal surface

The bones of the hand dorsal surface are the eight bones that make up the top of the hand. These include the four finger bones, the thumb bone, and the four metacarpal bones. The muscles and tendons of the hand attach to these bones, allowing for movement of the fingers and thumbs. The skin on the hand dorsal surface is thin and sensitive, providing protection for the underlying structures.

The muscles of the hand dorsal surface

The muscles of the hand dorsal surface are a group of muscles located on the back of the hand. These muscles are responsible for the movement of the fingers and thumb. The muscles of the hand dorsal surface include the extensor pollicis longus, extensor pollicis brevis, abductor pollicis longus, and extensor indicis.

The tendons of the hand dorsal surface

The tendons of the hand dorsal surface are responsible for the movement of the fingers. They are located in the palm of the hand and extend to the fingers. There are four main types of tendons in the hand: extensor, flexor, abductor, and adductor. Each type of tendon has a specific function. The extensor tendons allow you to extend your fingers. The flexor tendons allow you to flex your fingers. The abductor tendons allow you to move your fingers away from the palm of your hand. The adductor tendons allow you to move your fingers toward the palm of your hand.

The blood vessels of the hand dorsal surface

The hand dorsal surface is richly supplied with blood vessels. The superficial palmar arch, a branch of the ulnar artery, supplies the palmar surface of the hand. This arch consists of the common palmar digital arteries, which divide into four arteries that supply the fingers. The radial artery supplies the lateral aspect of the hand. It gives rise to the princeps pollicis artery, which supplies the thumb, and to three other arteries that supply the fingers.

The nerves of the hand dorsal surface

The dorsal surface of the hand is richly supplied with nerves. The three main types of nerve are:

1. Sensory nerves – these relay information about touch, temperature and pain from the skin to the brain.

2. Motor nerves – these carry signals from the brain to the muscles, telling them to contract or relax.

3. Autonomic nerves – these control automatic functions such as heart rate and blood pressure.

The main sensory nerve of the hand is the median nerve. This runs from the arm into the palm, where it branches out to provide sensation to the thumb, index finger, middle finger and half of the ring finger. It also supplies sensation to the palm itself.

The ulnar nerve is another important sensory nerve of the hand. It runs from the arm into the little finger side of the palm, where it supplies sensation to the little finger and half of the ring finger. It also provides sensation to a small area of skin on the back of the hand nearthe little finger.

The radial nerve is a motor nerve that runs down the arm and intothe thumb side ofthe hand. It supplies contraction signals to some ofthe muscles that movethe thumb, as well as providing sensationto partof thenearby skin surface..

Conclusion

Knowing the anatomy of the hand dorsal surface can be very useful in a variety of situations, from medical diagnosis to everyday activities. We hope that this article has provided you with all of the information you need to understand the various structures and joints found on your own hands. With this knowledge, we are confident that you will have a better understanding of how your hands work and will be able to use them more effectively in whatever task it is that you choose!