What connects bone to bone?
None of these.
Ligaments.
Tendons.
Syndesmosis.
The Correct Answer is B
A ligament is a type of fibrous connective tissue that connects bone to bone. It usually serves to hold structures together and keep them stable.
For example, the anterior cruciate ligament (ACL) connects the femur and the tibia in the knee joint.
Choice A is incorrect because none of these is not a valid answer.
Choice C is incorrect because tendons are fibrous connective tissues that connect muscle to bone.
For example, the Achilles tendon connects the gastrocnemius muscle to the calcaneus bone in the ankle.
Choice D is incorrect because syndesmosis is a type of fibrous joint that connects two bones by a ligament or an interosseous membrane.
For example, the distal tibiofibular joint is a syndesmosis joint.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
The mastoid process is a bony projection of the temporal bone at the posterior base of the skull.
It allows the attachment of muscles such as the sternocleidomastoid and splenius capitis.
It also contains air-filled spaces called the mastoid air cells.
Choice A is incorrect because the occipital bone forms the back and base of the skull and does not have a mastoid process.
Choice B is incorrect because the sphenoid bone is a butterfly-shaped bone at the base of the skull that does not have a mastoid process.
Choice C is incorrect because the frontal bone forms the forehead and the upper part of the eye sockets and does not have a mastoid process.
Correct Answer is ["Radial flexion of the wrist"]
Explanation
Radial flexion of the wrist, also known as radial deviation, refers to the movement of the wrist towards the radial (thumb) side of the forearm.
This movement is achieved by the contraction of muscles on the lateral (thumb) side of the forearm.
The joint involved in radial flexion of the wrist is the radiocarpal joint, which is a condyloid joint formed by the articulation between the distal end of the radius bone and the carpal bones of the wrist.
This joint allows for a range of movements, including:
1. Ulnar flexion of the wrist: This refers to the movement of the wrist towards the ulnar (little finger) side of the forearm, which is achieved by the contraction of muscles on the medial (little finger) side of the forearm.
2. Extension of the wrist: This refers to the movement of the wrist backward, away from the palm of the hand.
This movement is achieved by the contraction of muscles on the back of the forearm.
3. Flexion of the wrist: This refers to the movement of the wrist forwards, towards the palm of the hand.
This movement is achieved by the contraction of muscles on the front of the forearm.
4. Adduction of the wrist: This refers to the movement of the wrist towards the midline of the body, which is achieved by the contraction of muscles on the medial (little finger) side of the forearm.
5. Abduction of the wrist: This refers to the movement of the wrist away from the midline of the body, towards the radial (thumb) side of the forearm, which is achieved by the contraction of muscles on the lateral (thumb) side of the forearm.
All of these movements of the radiocarpal joint are important for fine motor skills, such as writing, typing, and playing musical instruments, as well as for everyday activities such as lifting and carrying objects.
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