The shoulder and hip are examples of ball and socket joints.
Briefly describe the structural differences between the two and how this impacts the available motions at each joint.
The Correct Answer is ["The shoulder and hip are examples of ball and socket joints"]
Briefly describe the structural differences between the two and how this impacts the available motions at each joint.
Answer and explanation.
The shoulder and hip are both ball and socket joints, which means they have a round end of one bone that fits into a small cup-like area of another bone.
However, the shoulder joint is more mobile than the hip joint, which means it can move in more directions, but it is also more unstable and prone to dislocation.
The hip joint is more stable than the shoulder joint, which means it can support more weight and force, but it has less range of motion.
The shoulder joint allows for eight different movements: flexion, extension, abduction, adduction, internal rotation, external rotation, horizontal abduction, and horizontal adduction.
The hip joint allows for six different movements: flexion, extension, abduction, adduction, internal rotation, and external rotation.
The shoulder joint has a larger socket than the hip joint, which gives it more freedom of movement.
The hip joint has a smaller socket than the shoulder joint, which makes it more secure and stable.
The shoulder and hip joints are both important for many daily functions and activities.
They are also both susceptible to injuries and conditions such as osteoarthritis, inflammatory arthritis, and labrum tears.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The cervical vertebrae are the only vertebrae that have transverse foramina, which are openings in the transverse processes that allow the passage of the vertebral arteries and veins.
Choice B is incorrect because lumbar vertebrae do not have transverse foramina.
They have large bodies and short, thick transverse processes that serve as attachment sites for muscles.
Choice C is incorrect because thoracic vertebrae do not have transverse foramina.
They have costal facets on their transverse processes that articulate with the tubercles of the ribs.
Choice D is incorrect because sacral vertebrae do not have transverse foramina.
They are fused together to form the sacrum, which has four pairs of sacral foramina on each side that transmit sacral nerves and vessels.
Correct Answer is ["Mandible protraction of the temporomandibular joint (TMJ)."]
Explanation
Mandible protraction refers to the movement of the lower jaw (mandible) forwards, away from its rest position.
This movement is also known as jaw thrust.
The joint involved in mandible protraction is the temporomandibular joint (TMJ), which is a synovial joint that connects the mandible to the temporal bone of the skull.
This joint allows for a variety of movements, including:
Mandible retraction: This refers to the movement of the lower jaw backward, towards the skull.
Mandible elevation: This refers to the movement of the lower jaw upwards, towards the upper jaw.
Mandible depression: This refers to the movement of the lower jaw downwards, away from the upper jaw.
Mandible lateral excursion: This refers to the movement of the lower jaw to either the left or the right.
Mandible medial excursion: This refers to the movement of the lower jaw back to its midline position after a lateral excursion.
These movements of the TMJ are essential for functions such as chewing, speaking, and swallowing.
However, excessive or repetitive movements of the jaw can lead to TMJ disorders, which can cause pain, clicking, popping, or locking of the jaw.
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