More distally, at the elbow, the capitulum of the humerus articulates with the head of the radius, and the trochlea of the humerus articulates with the trochlear notch of the ulna. is situated lateral to the head of the humerus and posterolateral to the lesser tubercle.
What are the bones of the upper extremity going from distal to proximal?
The humerus is the bone of the upper arm; it articulates proximally with the scapula and distally with the radius and ulna. The ulna is the bone of the medial side of the forearm; it articulates proximally with the humerus and radius and distally with the radius.
What does the skeletal framework of the neck consist of?
The skeletal framework of the neck consists of: lumbar vertebrae.
What is the structure that furnishes the axis for the rotation of the head from side to side?
The axis is the second cervical vertebra; it has what is called the odontoid process about which the atlas rotates. The joint between the atlas and axis is a pivot type of joint. It allows the head turn from side to side.
What is the capitulum quizlet?
Describe the capitulum. A round knob on the distal end, lateral side of the humerus that articulates with the head of the radius.
Where are the capitulum and trochlea located?
capitulum: At the distal head of the humerus, it articulates with the radius of the forearm. trochlea: At the distal head of the humerus, it articulates with the ulna of the forearm.
What does the trochlea articulate with?
ulna
The capitulum laterally articulates with the radius; the trochlea, a spool-shaped surface, articulates with the ulna.
How do you remember capitulum and trochlea?
The mnemonic of the order of appearance of the individual ossification centers is C-R-I-T-O-E: Capitellum, Radial head, Internal (medial) epicondyle, Trochlea, Olecranon, External (lateral) epicondyle.
What is framework of bones known as?
Bones provide a rigid framework, known as the skeleton, that support and protect the soft organs of the body. The skeleton supports the body against the pull of gravity.
What is skeletal framework?
n. 1 a hard framework consisting of inorganic material that supports and protects the soft parts of an animal’s body and provides attachment for muscles: may be internal, as in vertebrates (see endoskeleton), or external, as in arthropods (see exoskeleton) 2 Informal a very thin emaciated person or animal.
What is difference between atlas and axis?
The key difference between atlas and axis vertebrae is that the atlas vertebra is the topmost vertebra which holds the skull while axis vertebra is the second topmost vertebra which provides an axis to rotate the skull and atlas vertebra when the head moves side to side.
What movement does the atlas and axis allow?
The atlas and axis in particular work with the ligaments to move the neck. The atlas and the occipital bone form the atlanto-occipital joint, which allows neck flexion. When you nod your head as if to say “yes,” that is neck flexion. The atlas and axis form the atlanto-axial joint, which allows head rotation.
Is the capitulum lateral to the trochlea?
Immediately lateral to the trochlea is the capitulum (“small head”), a knob-like structure located on the anterior surface of the distal humerus. The capitulum articulates with the radius bone of the forearm. Just above these bony areas are two small depressions.
Where is the capitulum located in the humerus?
Where is the capitulum found? Immediately lateral to the trochlea is the capitulum (“small head”), a knob-like structure located on the anterior surface of the distal humerus. The capitulum articulates with the radius bone of the forearm. Just above these bony areas are two small depressions.
Where is the capitellum on the elbow?
The capitellum on the outside of the elbow. is the capitulum medial or lateral? The other, called the capitulum, is a small spherical structure lateral to the trochlea that articulates with the head of the radius. The capitulum is on the lateral side, the trochlea is medial.
What is the anatomy of the humeral head?
The rounded humeral head projects medially and articulates with the glenoid cavity of the scapula. Immediately adjacent to the head is the narrower anatomical neck, which allows for a wider range of movements of the head within the shoulder joint.
