The hand’s complex anatomy consists of 27 bones, 27 joints, 34 muscles, over 100 ligaments and tendons, numerous blood vessels, nerves, and soft tissue . It is important to understand the normal anatomy of the hand in order to learn about diseases and conditions that can affect our hands.
What muscle tissue is in the hand?
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 .
Is hand an organ or tissue?
Hand, grasping organ at the end of the forelimb of certain vertebrates that exhibits great mobility and flexibility in the digits and in the whole organ. It is made up of the wrist joint, the carpal bones, the metacarpal bones, and the phalanges.
What is inside your hand?
The human hand is made up of the wrist, palm, and fingers and consists of 27 bones, 27 joints, 34 muscles, over 100 ligaments and tendons, and many blood vessels and nerves. The hands enable us to perform many of our daily activities such as driving, writing and cooking.
What tissues are in the 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.
Is the palm the back of your hand?
Palm: This is the bottom of the body of the hand . Back (opisthenar): The back of the hand shows the dorsal venous network, a web of veins. Wrist: The connection point between the arm and the hand, the wrist enables hand movements.
What is the hand joint called?
They connect to 5 metacarpal bones that form the palm of the hand. Each metacarpal bone connects to one finger at a joint called the metacarpophalangeal joint or MCP joint . This joint is also commonly referred to as the knuckle joint.
What is the strongest muscle in the hand?
The largest and strongest muscle in... The extensor pollicis longus muscle begins at the ulna and the interosseous membrane, a tough fibrous tissue that connects the ulna and the radius in...
How do hand muscles work?
Movements of the hand are mostly started by muscles in the forearm. Only the thin tendons of these muscles are found directly in the hand: the extensor tendons used for stretching the hand run through the back of the hand to the tips of the fingers, and the flexor (bending) tendons run through the palms to the fingers.
How do you build muscle in your hand?
- Hold a soft ball in your palm and squeeze it as hard as you can.
- Hold for a few seconds and release.
- Repeat 10 to 15 times on each hand. Do this exercise two to three times a week, but rest your hands for 48 hours in between sessions. Don’t do this exercise if your thumb joint is damaged.
How many fingers do humans have?
The palm has five bones known as metacarpal bones, one to each of the 5 digits. These metacarpals have a head, a shaft, and a base. Human hands contain fourteen digital bones, also called phalanges, or phalanx bones: two in the thumb (the thumb has no middle phalanx) and three in each of the four fingers .
What is the largest organ in the human body?
The skin is the body’s largest organ.
What are the 4 tissue types?
There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue . Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).
Are fingers part of the palm?
The palm comprises the underside of the human hand. Also known as the broad palm or metacarpus, it consists of the area between the five phalanges (finger bones) and the carpus (wrist joint).
What are hands used for?
Our hands do so much for us. They are capable of a wide variety of functions: touch- ing, grasping, feeling, holding, manipulating, caressing, and more . They are a vitally important part of who we are and how we see ourselves.
Is scaphoid hand or wrist?
The scaphoid bone is one of the carpal bones on the thumb side of the wrist , just above the radius. The bone is important for both motion and stability in the wrist joint. The word “scaphoid” comes from the Greek term for “boat.” The scaphoid bone resembles a boat with its relatively long, curved shape.
