The olecranon fossa, found on the humerus , works together with the olecranon process, found on the ulna, to help extend the forearm.
Where is the olecranon fossa located?
The olecranon fossa is located on the posterior surface of the distal humerus , where it receives the proximal ulna during full extension of the arm.
Where is the olecranon process located quizlet?
Tip of the olecranon, located at proximal end of ulna . Olecranon process articulates with the olecranon fossa of the humerus.
On which bone do you find the olecranon fossa?
Anatomical terms of bone
The olecranon fossa is a deep triangular depression on the posterior side of the humerus , superior to the trochlea. It provides space for the olecranon of the ulna during extension of the forearm.
Where is the olecranon process located anatomy?
this notch is called the olecranon process; it articulates behind the humerus in the olecranon fossa and may be felt as the point of the elbow. The projection that forms the lower border of the trochlear notch, the coronoid process, enters the coronoid fossa of the humerus when the elbow...
What muscles attach to olecranon fossa?
- posteriorly the olecranon bursa.
- anteriorly the semilunar notch.
- attachments. triceps brachii muscle attached over the superior surface. posterior and oblique bands of the ulnar collateral ligament. ulnar part of the flexor carpi ulnaris muscle.
What muscles attach to the olecranon process?
The olecranon is a bony prominence of the ulna that represents that bone’s most proximal posterior surface at the elbow. While the olecranon is an attachment site for several muscle groups including the flexor carpi ulnaris and anconeus, the major muscle attachment is that of the triceps .
Is the olecranon process located on the medial aspect of the ulna?
The olecranon process is located on the medial aspect of the ulna. In the anatomical position, the tuberosity of the radius is in close proximity to the lateral side of the ulna. The insertion of the biceps brachii muscle is on the tuberosity of the radius and bicipital aponeurosis.
Which bones form the elbow quizlet?
What bones form the elbow joint and what is its function? Formed by the humerus and the two bones of the forearm, the radius, and the ulna.
What is the olecranon quizlet?
Olecranon process. (Elbow) Location. Proximal end of the ulna and articulates with the distal humerus . Its large surface is the attachment site for the triceps brachii muscle.
What is the purpose of olecranon process?
The olecranon serves as a lever for the extensor muscles that straighten the elbow joint .
What does the olecranon fossa articulate with?
On the posterior surface of the condyle is the olecranon fossa, which articulates with the olecranon of the ulnar bone upon flexion of the elbow joint.
What is the function of Coronoid fossa and olecranon fossa?
The two depressions—the olecranon fossa, behind and above the trochlea, and the coronoid fossa, in front and above— receive projections of the ulna as the elbow is alternately straightened and flexed . The epicondyles, one on either side of the bone, provide attachment for muscles concerned with movements of the...
Where does the word olecranon come from?
The olecranon — or olecranon process — is the part of your elbow that pokes out. The root of this word, the cranon (like cranium) comes from the Greek word for “skull or head” and indeed it’s like the head of your elbow. When you extend your arm, the olecranon can’t be seen.
What notch is found between the olecranon and coronoid process?
The trochlear notch (/ˈtrɒklɪər/), also known as semilunar notch and greater sigmoid cavity, is a large depression in the upper extremity of the ulna that fits the trochlea of the humerus (the bone directly above the ulna in the arm) as part of the elbow joint. It is formed by the olecranon and the coronoid process.
What three muscles are the primary flexors of the elbow?
First the muscles that flex and extend the elbow. There are three flexors, and one extensor. The three flexors are brachialis, biceps, and brachioradialis . Here’s the brachialis muscle.
