Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos
arm
Introduction References & Edit History Quick Facts & Related Topics
Images
Detailed anatomical illustration of the human upper arm from the front, showing the superficial muscles, major nerves, and tendons. Key structures like the deltoid, biceps brachii, brachialis, and associated nerves are labeled. Illustration of the human upper arm from a posterior view, showing labeled muscles and nerves including the triceps brachii, deltoid, supraspinatus, infraspinatus, and several forearm extensor muscles. Illustration of the human forearm from an anterior view, showing the superficial layer of muscles, tendons, and ligaments. Major structures including the biceps brachii, brachialis, pronator teres, flexor carpi radialis, and palmaris longus muscles are labeled, along with nerves and arteries such as the median nerve and radial artery. An anatomical illustration of the human forearm and hand from a posterior view, showing labeled muscles and tendons including the triceps brachii, brachioradialis, extensor digitorum, and various extensor and abductor muscles and tendons. The Human Body
At a Glance
default image
arm summary
Quizzes
Superficial arteries and veins of face and scalp, cardiovascular system, human anatomy, (Netter replacement project - SSC)
The Human Body
Related Questions

arm: References & Edit History

Article Contributors

Primary Contributors

  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Modified link of Web site: National Center for Biotechnology Information - Anatomy, Shoulder and Upper Limb, Arm Structure and Function. Oct 31, 2026
Add new Web site: OpenStax - Anatomy and Physiology 2e - Bones of the Upper Limb. Jun 21, 2025
Media added. Dec 04, 2023
Add new Web site: National Center for Biotechnology Information - Anatomy, Shoulder and Upper Limb, Arm Structure and Function. Jun 28, 2023
Add new Web site: Verywell Health - Arm Muscle Anatomy and Function. Jul 25, 2021
Corrected display issue. Jan 31, 2020
Add new Web site: Healthline - Arm. Oct 17, 2013
New illustrations of muscles of upper arm and forearm added. Jan 14, 2009
Article added to new online database. May 27, 1999
View Changes:
Article History
Revised:
By: