Growth Data Verified

Hand Anatomy

Published on May 19, 2022   -  4 min read

Abstract

The anatomy of a hand provides basic knowledge about its structure and functions. Read the below article to understand the normal anatomy of the hand.

Contents

Introduction:

The hand is a complex organ of the body at the end of the forelimb. It is the most flexible part of the skeletal system.The primary function of the hand is to hold and manipulate objects. In addition, they are used for feeling the touch sensation and play a role in sign language.There are two hands; each hand comprises a wrist, palm, backhand, and five fingers. The front or palm side of the hand is called the palmar side, and the back of the hand is called the dorsal side. A hand is composed of different bones, joints, muscles, ligaments, innervating nerves, and blood vessels that help in various movements and dexterity.

What Are the Bones and Joints That Form the Hand?

The hand consists of 27 bones and 27 joints.

What Are the Muscles Present in the Hand?

The muscles of the hand are skeletal muscles. These are connected to the bones and are responsible for movement. The two groups of muscles present in the hand are, extrinsic and intrinsic muscles.

1. Extrinsic Muscles:

Extrinsic muscles are extensors and flexors. They are long muscles located in the forearm and inserted in the hand skeleton, hence the name extrinsic.

2. Intrinsic Muscles:

Intrinsic muscles are thenar, hypothenar, lumbrical, and interossei. They are small muscles located within the hand itself.

What Are the Nerves Present in the Hand?

The nerves of the hand have both motor (carry impulses from the brain to muscles for movement) and sensory functions (carry senses of touch, heat, or pain from the hand to the brain).

The three main nerves of the hand are:

What Are the Blood Vessels Present in the Hand?

The blood vessels travel along with the nerve and supply blood to the hand. The two main arteries of the hand are the radial artery and ulnar artery. The pulse measured in the wrist is at the radial artery. The veins of the hand are called superficial veins since they are close to the skin. The two prominent superficial veins in the hand are cephalic and basilic veins. The lymphatic vessels of the hand drain into the superficial and deep lymphatic systems.

Conclusion:

The hand is the visible part of the brain, said Immanuel Kant. The hand is responsible for creative manifestations. The functional capability of the hand relates both to the structural characteristics and the control system of the brain. Hands can be affected by several diseases. Therefore, knowledge about hand anatomy is essential for the systematic assessment of hand disorders or injuries.

Last reviewed at:
19 May 2022  -  4 min read

RATING

15

Tags:

Comprehensive Medical Second Opinion.Submit your Case

Related Questions & Answers


Oral Health in Breastfed Babies

Article Overview: In this article, we will discuss how breastfeeding impacts the oral cavity in a variety of ways and the benefits of breastfeeding. Read Article


What Are the Types of Breastfeeding? Firstly, let us know how breastfeeding is classified according to the World Health Organization (WHO): 1. Exclusive Breastfeeding - where the baby is fed only the mother's breast milk for the first six months of life. However, the baby can also be given oral rehy...  Read Article

Trans-Sinus Implants

Article Overview: Read the article to know the indications, inclusion and exclusion criterion, advantages, prophylaxis, and procedure of trans-sinus implants.  Read Article


Overview: Trans-sinus implants may be used when the insertion of conventional tilted implants is not possible before considering the use of pterygoid and zygomatic implants or bone grafting procedures. What Are Trans-Sinus Implants? For the rehabilitation of atrophic posterior maxilla, that is, the...  Read Article

Pericardiocentesis - Indications, Risks, and Procedure

Article Overview: Pericardiocentesis is a treatment done to drain the fluid that has been accumulated in the heart sac. This article is an overview of the process of pericardiocentesis. Read Article


Shaqra Ekram
Shaqra Ekram
Dentistry

Introduction The heart is surrounded by a fibrous sac known as the pericardium. This fibrous sac is composed of two fine layers with a minimal quantity of fluid in between them. This fluid avoids the friction produced between the two delicate layers because they generally rub against each other whil...  Read Article

Popular Articles Most Popular Articles

Do you have a question on Hand Anatomy or ?

Ask a Doctor Online

* guaranteed answer within 4 hours.

Disclaimer: No content published on this website is intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek advice from your physician or other qualified healthcare providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website. Read our Editorial Process to know how we create content for health articles and queries.