Table of Contents
- 1 Which nerve runs just deep to brachioradialis?
- 2 What nerve controls the brachialis?
- 3 Why brachioradialis is a flexor?
- 4 Is brachialis and brachioradialis the same?
- 5 Why is brachioradialis posterior?
- 6 Where does brachioradialis muscle attach?
- 7 Where does the brachioradialis insertion?
- 8 What is the origin of the brachioradialis muscle?
Which nerve runs just deep to brachioradialis?
The radial nerve
The radial nerve lies deep to the brachioradialis and the lateral antebrachial cutaneous nerve runs medial to the brachioradialis.
What nerve controls the brachialis?
The musculocutaneous nerve innervates the three muscles of the anterior compartment of the arm: the coracobrachialis, biceps brachii, and brachialis. It is also responsible for cutaneous innervation of the lateral forearm.
Why brachioradialis is a flexor?
Although anatomically part of the posterior forearm muscles, which are known to be forearm extensors, brachioradialis’ fiber orientation enables it to rather flex the forearm, especially when the forearm is semi pronated. The function of this action is seen in various ordinary activities such as hammering or rowing.
What muscle is immediately medial to the brachioradialis?
The medial border is the brachialis muscle and more distally the biceps tendon and associated fibrous structures.
Which muscle is superficial to the brachialis?
biceps brachii muscle
The biceps brachii muscle is located immediately anterior to the brachialis, as are the brachial vessels, the musculocutaneous, and median nerves. The humerus and the capsule of the elbow joint lie posterior to the muscle.
Is brachialis and brachioradialis the same?
Both are found on the anterior side of the arm and forearm. One of these is the brachioradialis muscle which is largely on the forearm (see the next section) and the other is the brachialis, which is largely on the upper arm.
Why is brachioradialis posterior?
The posterior compartment of the forearm (or extensor compartment) contains twelve muscles which are chiefly responsible for extension of the wrist and digits, and supination of the forearm….Muscles.
| Level | superficial |
|---|---|
| Muscle | brachioradialis |
| Extrinsic/Intrinsic | intrinsic |
| Innervation | radial nerve |
Where does brachioradialis muscle attach?
radius
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 |
Which muscle is between brachioradialis and flexor carpi Radialis?
The distal internervous plane is between the brachioradialis muscle and the flexor carpi radialis muscle, which are innervated by the radial nerve and median nerve respectively.
What is the insertion of the brachioradialis muscle?
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 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 |