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Main Forearm Muscles, Learn more about their anatomy at Kenhub! The word ‘arm’ often refers to the upper extremities in humans. In this article, we shall look at the anatomy of the muscles of the pectoral region – their attachments, actions and innervation. Names & Anatomy of the ‘Upper’ Arm Muscles The upper arm is Dec 15, 2025 · Clear overview of the anterior forearm flexor muscles, covering anatomy, attachments, actions, innervation, and key clinical correlations for exam revision. Forearm Muscles The part of the human arm between the elbow and the wrist is commonly called the forearm. Middle of the lateral aspect of the shaft of the radius. Understanding what each group does explains everything from how you grip a doorknob to why Several muscles in the forearm control the pivoting of the radius around the ulna that rotates the wrist and hand. Jul 7, 2024 · Healthcare providers organize your back muscles into three main groups that run from your neck, down your spine to just above your hips. Superficial muscles: Pronator teres: It has two head. In cross-section, the forearm can be divided into two fascial compartments. Jan 26, 2022 · Your upper arm muscles and forearm muscles help you move your arms and hands. These muscles control your arms, as well as your hands and fingers. The part below the elbow joint is referred to as the ‘lower’ arm or forearm. Deep muscles: Aug 3, 2024 · There are typically 20 muscles in the forearm, divided into anterior (flexor) and posterior (extensor) compartments. It contains four muscles that exert a force on the upper limb: the pectoralis major, pectoralis minor, serratus anterior and subclavius. Find out how they are divided into anterior and posterior compartments, and what actions they perform. Learn how to grow your arms and streamline your programming. Flexor carpi ulnaris: Origin: It has two head. It contains four muscles – three in the anterior compartment (biceps brachii, brachialis, coracobrachialis), and one in the posterior compartment (triceps brachii). . It acts as a bridge between your humerus and ulna, one of the main bones of your forearm. Apr 15, 2020 · The muscles in the forearm control the fine and intricate movements of the fingers as well as the gross and forceful movements of the hand and wrist. Palmaris longus: Flexor carpi radialis: Flexor digitorum superficialis. In this article, we shall look at the anatomy of the muscles of the upper arm – their attachments, innervation and actions. Nov 6, 2025 · The pectoral region is located on the anterior chest wall. Apr 10, 2026 · The upper arm is located between the shoulder joint and elbow joint. Still, anatomically, ‘arm’ refers to the ‘upper’ arm region between the shoulder and the elbow joint. The anatomical term for the forearm is the antebrachium. It’s involved with the flexing of your forearm. Learn everything you need to know. Jun 18, 2018 · This muscle lies underneath your biceps. These muscles control wrist, finger, and forearm movements. Superficial extensors consist of seven muscles; brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris, and the anconeus. 4 days ago · Your forearm muscles control nearly every movement of your wrist, fingers, and hand, while also helping bend your elbow and rotate your palm. Anterior compartment of the forearm muscles divided into superficial & deep muscles. Coracobrachialis. Learn about the 19 muscles in the forearm that help move the elbow, wrist, and hand. Jul 15, 2025 · Level-up your training toolbox with our list of the 10 best arm exercises and workouts. One of the largest is the brachioradialis, which helps to bend your Residing in the posterior compartment of the forearm, the extensor muscles can be further divided into superficial and deep extensors. Two long bones, the radius and ulna, structure this section of the arm, also acting as the point of attachment for several muscles originating in this area. There are about 20 muscles packed between your elbow and wrist, divided into groups that handle flexion (bending), extension (straightening), and rotation. The forearm contains many muscles, including the flexors and extensors of the wrist, flexors and extensors of the digits, a flexor of the elbow (brachioradialis), and pronators and supinators that turn the hand to face down or upwards, respectively. The supinator muscle inserts on the radius and supinates the hand by turning the palm upwards or toward the front of the body. So, the 5 muscles in the upper arm are counted as the arm muscles. Apr 18, 2024 · Your forearm anatomy includes 20 muscles, ranging from the extensor carpi radialis longus to the abductor pollicis longus. Nov 16, 2023 · The arm muscles comprise five muscles, which mainly act to flex and extend the forearm. These muscles are divided into two compartments, based on both anatomical and functional differences. May 27, 2025 · This article provides a comprehensive overview of forearm muscle anatomy, their compartmental organization, key actions, nerve supply, and major clinical correlations. Apr 18, 2024 · Forearm muscles are responsible for the extension and movement of your wrists and fingers. oe6 ayh cwf273y gktn fwd6 1i btgvs c1h vsms3 0sg