What is the action of the brachioradialis muscle?
Owen Barnes
Published Mar 06, 2026
What is the action of the brachioradialis muscle?
Function. The brachioradialis flexes the forearm at the elbow. Depending on the position of the hand during the flexion, the brachioradialis can tend to move the hand to neutral.
What is the function of the Brachialis muscle?
Structure and Function The brachialis is an elbow flexor that originates from the distal anterior humerus and inserts onto the ulnar tuberosity. The brachialis is one of the largest elbow flexors and provides pure flexion of the forearm at the elbow. [2] It does not provide any supination or pronation of the forearm.
Can you palpate brachialis?
Under the fingers – and behind the biceps tendon – the contraction of the brachialis muscle can be felt. During relaxation of this muscle, its belly, which runs further distally than the muscle belly of the biceps, can be palpated with a pinching grip.
What is brachii muscle?
The biceps brachii muscle is one of the chief muscles of the arm. The origin at the scapula and the insertion into the radius of the biceps brachii means it can act on both the shoulder joint and the elbow joint, which is why this muscle participates in a few movements of the arm.
Where does brachioradialis insertion?
Brachioradialis muscle
| Origin | Lateral supracondylar ridge of humerus, lateral intermuscular septum of arm |
|---|---|
| Insertion | (Proximal to) styloid process of radius |
| Action | Elbow joint: Forearm flexion (when semi pronated) |
| Innervation | Radial nerve (C5-C6) |
| Blood supply | Radial artery, radial recurrent arteries, radial collateral artery |
What is the brachioradialis insertion?
The brachioradialis is a superficial, fusiform muscle on the lateral side of the forearm. It originates proximally on the lateral supracondylar ridge of the humerus. It inserts distally on the radius, at the base of its styloid process. Near the elbow, it forms the lateral limit of the cubital fossa, or elbow pit.
Where does the brachialis insert?
Coronoid process
The brachialis muscle is a prime flexor of the forearm at the elbow joint….Brachialis muscle.
| Origin | Distal half of anterior surface of humerus |
|---|---|
| Insertion | Coronoid process of the ulna; Tuberosity of ulna |
Where does brachialis attach?
ulna
Brachialis muscle
| Brachialis | |
|---|---|
| Origin | anterior surface of the humerus, particularly the distal half of this bone |
| Insertion | coronoid process and the tuberosity of the ulna |
| Artery | radial recurrent artery, brachial artery |
| Nerve | musculocutaneous nerve (C5-C7) and radial nerve (C5, C6) |
Where does Brachialis attach?
The tendon inserts onto the tuberosity of ulna and onto a rough depression on the anterior surface of the coronoid process of the ulna–passing between two slips of the flexor digitorum profundus muscle. It sometimes has an accessory attachment to the radius or the bicipital aponeurosis.
What are radial nerves?
The radial nerve helps you move your elbow, wrist, hand and fingers. It runs down the back of the arm from the armpit to the hand. The radial nerve is part of the peripheral nervous system. The peripheral nervous system sends signals from your brain to your arms and fingers, lower limbs, skin and internal organs.
What is the brachioradialis named for?
The correct answer is (C) the location of their origin and insertion.
