What is a landmark on cervical vertebrae that is not on any other type?
Transverse Foramen.
Lamina.
Pedicle.
Spinous Process.
The Correct Answer is A
The transverse foramen is a hole in each transverse process of the cervical vertebrae that allows the passage of the vertebral artery, vein, and nerve.
It is a distinctive feature of the cervical vertebrae and is not found on any other type.
Choice B is incorrect because lamina is a part of the vertebral arch that connects the transverse process to the spinous process.
It is present on all types of vertebrae.
Choice C is incorrect because pedicle is a part of the vertebral arch that connects the vertebral body to the transverse process.
It is present on all types of vertebrae.
Choice D is incorrect because spinous process is a bony projection on the posterior aspect of the vertebral arch that serves as an attachment site for muscles and ligaments.
It is present on all types of vertebrae.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A is incorrect because transverse fractures are the type of fractures where the bone has a horizontal fracture line.
They are usually caused by a strong force applied at a right angle to the bone shaft.
Choice B is incorrect because spiral fractures are the type of fractures where the bone has an angled fracture line that curves around the bone shaft.
They are usually caused by a twisting force applied to the bone.
Choice D is incorrect because greenstick fractures are the type of fractures where the bone is bent and partially broken on one side.
They are usually seen in children whose bones are softer and more flexible than adults.
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.
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