What is the function of the hand?

What is the function of the hand?

The major function of the hand in all vertebrates except human beings is locomotion; bipedal locomotion in humans frees the hands for a largely manipulative function. In primates the tips of the fingers are covered by fingernails—a specialization that improves manipulation.

What are the parts of your hand?

Parts of a Hand

• Bones are hard tissues that give your hand shape and stability.
• Phalanges are the finger bones.
• Metacarpals are the middle part of the hand bones.
• Carpals are the wrist bones.
• Joints are places where bones fit together, allowing movement.

Which are the important structures in the hand?

The distal phalanges carry the nails, the middle phalanges are in the middle, and the proximal phalanges are closest to the palm. The bones are the most important structure of the human hand and responsible for almost all the activities of the hand.

How does the structure of your hand support its function?

As with most arches in buildings and bridges, the arches of the hand are supported by a central keystone structure. The capitate bone is the keystone of the proximal transverse arch. The keystone of the distal transverse arch is formed by the metacarpophalangeal joints of these central metacarpals.

Where is the dorsum of hand?

the back of the hand; surface of hand opposite the palm.

What is back of hand called?

dorsal side
Important Structures. The front, or palm-side, of the hand is referred to as the palmar side. The back of the hand is called the dorsal side.

What is the back of your hand called?

What makes up the anatomy of the hand?

Anatomy of the Hand. The hand is composed of many different bones, muscles, and ligaments that allow for a large amount of movement and dexterity. There are 3 major types of bones in the hand itself, including: Phalanges. The 14 bones that are found in the fingers of each hand and also in the toes of each foot.

How many bones are in the middle of the hand?

The 14 bones that are found in the fingers of each hand and also in the toes of each foot. Each finger has 3 phalanges (the distal, middle, and proximal); the thumb only has 2. Metacarpal bones. The 5 bones that compose the middle part of the hand. Carpal bones.

How many fingers does the human hand have?

It is made up of the wrist joint, the carpal bones, the metacarpal bones, and the phalanges. The digits include a medial thumb (when viewed with the palm down), containing two phalanges, and four fingers, each containing three phalanges. With three exceptions, all primates have retained five digits on hand and foot.

What are the muscles and ligaments in the hand?

Numerous muscles, ligaments, tendons, and sheaths can be found within the hand. The muscles are the structures that can contract, allowing movement of the bones in the hand. The ligaments are fibrous tissues that help bind together the joints in the hand. The sheaths are tubular structures that surround part of the fingers.