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A joint is formed with a fossa when a bone's convex surface fits into the concave depression of the fossa, allowing for articulation and movement. For example, the glenoid cavity (fossa) of the scapula forms a joint with the head of the humerus, creating the shoulder joint. This arrangement enables a range of motion while providing stability to the joint.
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What is the name of the fossa that articulates with the humerus?
The fossa that articulates with the humerus is called the glenoid fossa, located on the scapula bone. This fossa forms the shoulder joint, known as the glenohumeral joint, which allows for a wide range of motion of the arm.
Mandibular fossa of temporal bone?
The mandibular fossa is a depression on the underside of the temporal bone where the lower jaw (mandible) articulates to form the temporomandibular joint (TMJ). This joint allows for jaw movement during activities like chewing and speaking. The mandibular fossa is lined with cartilage and acts as a cushion to reduce friction during jaw movements.
Does the labrum decrease the depth of the gleniod fossa?
No, the labrum does not decrease the depth of the glenoid fossa; rather, it serves to enhance it. The labrum is a fibrocartilaginous structure that deepens the socket of the glenoid fossa, providing increased stability to the shoulder joint by creating a more secure fit for the head of the humerus. This added depth helps prevent dislocations and supports overall joint function.
How many fossas does a scapula have?
Glenoid, subscapula, supra- and infraspinatus. . . So 4
Can fossa swim?
the fossa's paws help the fossa to swim the paws are like paddleds
What is the name of the fossa that articulates with the humerus?
The fossa that articulates with the humerus is called the glenoid fossa, located on the scapula bone. This fossa forms the shoulder joint, known as the glenohumeral joint, which allows for a wide range of motion of the arm.
What is the landmark that contacts with olecranon fossa to form its joint?
The landmark that contacts with olecranon fossa to form its joint is the olecranon process of the ulna. It forms the elbow joint with the humerus at the olecranon fossa, providing stability and allowing for extension of the forearm.
What forms the ball-socket join at the shoulder of humans?
The humerous and the glenoid fossa form the ball-socket joint.
What does the olecranon fossa articulate with?
The olecranon fossa of the humerus articulates with the olecranon process of the ulna when the elbow is extended. This forms the back part of the elbow joint.
Bone that forms a ball and socket joint with the humerous?
The bone is called the scapula and the part of the scapula that articulates with the humerus is known as the glenoid fossa.
What articulates with the mandibular fossa?
The mandibular fossa articulates with the head of the mandible, specifically the condylar process of the mandible. This articulation forms the temporomandibular joint (TMJ), which allows for movements such as opening and closing the mouth, as well as lateral movements during chewing. The fossa is part of the temporal bone of the skull.
The jaw bone articulates with the temporal bone at what fossa?
The jaw bone articulates with the temporal bone at the mandibular fossa, also known as the glenoid fossa or the mandibular fossa of the temporal bone. This is where the temporomandibular joint is formed, allowing for movements of the jaw.
What is the glenoid fossa of the scapula articulates with?
The glenoid fossa of the scapula articulates with the head of the humerus, forming the shoulder joint. It is a shallow, cup-shaped socket that allows for a wide range of motion in the shoulder joint.
Fossa on distal posterior surface of humerus?
The fossa on the distal posterior surface of the humerus is the olecranon fossa. It is located above the trochlea and accommodates the olecranon process of the ulna when the elbow is extended. It helps to increase the range of motion of the elbow joint.
What keeps the mandibular condyle from slipping out of its fossa in a posterior direction?
The articular disc of the temporomandibular joint acts as a cushion and helps maintain the mandibular condyle in position within the fossa. Ligaments, muscles, and the shape of the condyle and fossa also contribute to stabilizing the joint and preventing the condyle from slipping posteriorly.
Which muscle forms the lateral wall of the cubital fossa?
Brachioradialis muscle
Where is the olecranon fossa located?
The olecranon fossa is located on the posterior aspect of the humerus bone in the elbow joint. It is a depression that accommodates the olecranon process of the ulna when the elbow is fully extended.
