Joints between vertebrae would be an example of:.
Synarthrotic.
Symphysis.
Suture.
Gomphosis.
The Correct Answer is B
The joints between the vertebrae are secondary cartilaginous joints (symphyses) that are formed by the intervertebral discs between the vertebral bodies.
A symphysis is a type of joint that has a fibrocartilaginous disc between two bones that allows slight movement.
Choice A is incorrect because synarthrotic joints are immovable joints, such as the sutures of the skull.
Choice C is incorrect because sutures are fibrous joints that are found only in the skull.
Choice D is incorrect because gomphosis is a type of fibrous joint that anchors a tooth to its socket in the jaw.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["External rotation of the shoulder joint"]
Explanation
External shoulder rotation is the movement of the humerus bone away from the centerline of the body, rotating the arm so that the palm faces away from the body.
This movement is achieved by the contraction of the external rotator muscles of the shoulder, which include the infraspinatus, teres minor, and posterior fibers of the deltoid muscle.
The joint involved in external shoulder rotation is the glenohumeral joint, also known as the shoulder joint.
The shoulder joint is a ball-and-socket joint formed by the articulation between the head of the humerus bone and the glenoid cavity of the scapula bone.
This joint allows for a range of movements, including:
1. Internal shoulder rotation: This is the opposite movement of external rotation, in which the humerus bone rotates inward toward the centerline of the body, with the palm facing inward.
2. Shoulder flexion: This is the movement of the humerus bone forward and upward, bringing the arm closer to the body's front.
3. Shoulder extension: This is the movement of the humerus bone backward and downward, moving the arm away from the body's front.
4. Shoulder abduction: This is the movement of the humerus bone away from the body's midline, raising the arm out to the side.
5. Shoulder adduction: This is the movement of the humerus bone toward the body's midline, bringing the arm back down to the side of the body.
6. Shoulder horizontal abduction: This is the movement of the humerus bone away from the body's midline at shoulder height.
7. Shoulder horizontal adduction: This is the movement of the humerus bone toward the body's midline at shoulder height.
All of these movements of the glenohumeral joint are important for many daily activities, including reaching, throwing, pushing, pulling, and lifting.
Correct Answer is D
Explanation
A cartilaginous joint is a joint where the bones are united by cartilage.
A hyaline cartilage joint is a type of cartilaginous joint where the bones are joined by hyaline cartilage.
An example of a hyaline cartilage joint is the first sternocostal joint that unites the first rib to the sternum.
Choice A is incorrect because hyaline cartilage joints are not present in the maxilla.
The maxilla is a single bone that forms the upper jaw and palate. Choice B is incorrect because none is not a valid answer.
Choice C is incorrect because fibrous cartilage joints are not present in the skull. The skull bones are joined by fibrous joints called sutures.
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