Jonathan Lansdale
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Jun 7, 2024 · Learn about the structure, bones, and movements of the human hand, as well as its role in manipulation and identification. Compare the hand with other vertebrates and primates in terms of locomotion, grasping, and fingerprints.
- The Editors of Encyclopaedia Britannica
Nov 13, 2023 · Learn everything about hand and wrist anatomy using this topic page. Click now to study the bones, muscles, arteries, and nerves of the hand at Kenhub!
- 24 min
- Where Are The Hand and Wrist located?
- How Are The Hand and Wrist structured?
- Hand and Wrist Anatomy
- Hand and Wrist Bones
- Hand and Wrist Muscles
- Hand Nerves and Wrist Nerves
- Hand and Wrist Tendons
- Hand and Wrist Ligaments
- Hand and Wrist Arteries and Blood Vessels
- Hand and Wrist Lymphatics
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Your wrist is the joint at the end of your forearm. It’s the hinge between your arm and hand that lets you reposition your hand. Your hand begins where your wrist ends. It includes your palm, fingers and thumb.
Your hand and wrist are structured to allow you to move, flex and rotate your wrist joint and to use your hand to grab and touch objects. Your wrist acts like a pivot point that can move in almost any direction as you reach and flex your hand. Think about your hand and wrist like a crane game at an arcade. Your hand is the claw that grabs and holds...
The parts that make up your hand and wrist are layered upon each other to form a three-dimensional shape that gives them the ability to move and function. Your hand and wrist are made of: 1. Bones. 2. Muscles. 3. Nerves. 4. Tendons. 5. Ligaments. 6. Blood vessels(arteries and veins). 7. Lymphatic vessels.
Bones provide the main structural support in your hand and wrist. They give them their shape and are the anchors other pieces are connected to.
Muscles are soft tissue made of stretchy fiber. Intrinsic muscles inside your hand work with extrinsic muscles near the outside of your hand and in your forearm to give your hand its strength and dexterity.
Nerves control your muscles and help you feel and process sensations, including: 1. Touch. 2. Temperature. 3. Pain. 4. Pressure. Three main nerves give your hand and wrist sensation: 1. Radial nerve. 2. Median nerve. 3. Ulnar nerve. All three of these nerves are connected to many branches of smaller nerves that spread out into your hand and wrist.
Tendons link your muscles to your bones. They’re like strong, flexible ropes. Your hand and wrist have two groups of tendons: 1. Extensor tendons: Tendons that help you extend and straighten your fingers, hand and wrist. 2. Flexor tendons:Tendons that help you flex and curl your fingers, hand and wrist.
Ligaments are the other type of connective tissue in your hand. If tendons are like ropes, ligaments are more like thick rubber bands. Their main functions include: 1. Helping your joints move smoothly. 2. Protecting your joints from bending too far. 3. Keeping your joints in the proper alignment.
Your hand and wrist get blood from two arteries. The radial artery runs along your radius (closer to your thumb). The ulnar artery runs along your ulna (closer to your pinkie finger). These arteries communicate with each other in “arches” that form in your hand. There’s a superficial and deep arch in your hand. Vessels branch off the arches and sup...
Your lymphatic system is a network of tissue, vessels and organs that collect excess plasma from your bloodstream and redistribute it throughout your body. Tiny capillaries in your hand capture extra plasma from the blood vessels that supply your hand and wrist. They connect to bigger lymph nodes and vessels in your upper arm.
Learn about the bones, muscles, nerves, tendons and ligaments that make up your hand and wrist. Find out how they work together to let you touch, hold and move objects with your fingers.
People also ask
What is the anatomy of the hand?
Why is hand anatomy important?
What is a hand & wrist?
What organ is the hand made up of?
- Bones of the hand. To understand the anatomy of the hand we first must understand the anatomy of the forearm and wrist. The forearm consists of two bones, the radius and the ulna.
- Muscles of the hand. Interossei muscles. The interossei muscles are intrinsic hand muscles that originate from the intermediate surfaces of the metacarpals.
- Nerves of the hand. The ulnar nerve (C8-T1 nerve roots) arises from the medial cord of the brachial plexus and supplies all of the intrinsic muscles of the hand with a few exceptions.
- Blood supply and drainage of the hand. The superficial palmar arch is the main continuation of the ulnar artery. It receives a small superficial branch from the radial artery and supplies the fingers with blood via the common digital, and the distal ‘proper digital arteries’ which run on either side of the finger.
A hand is a prehensile, multi-fingered appendage located at the end of the forearm or forelimb of primates such as humans, chimpanzees, monkeys, and lemurs.
Jan 20, 2018 · Learn about the structure and function of the hand, a complex and versatile organ that enables humans to perform many tasks. See images and diagrams of the hand's bones, muscles, nerves, and blood vessels.
Mar 9, 2024 · Hand anatomy consists of bones, muscles, and neurovascular structures that work together. They help us touch, hold, and move objects every day. While intrinsic hand muscles of hand anatomy play a role, forearm muscles also send tendons through the wrist, allowing for a wide range of movements.
