On which bone do we find the mastoid process?
Occipital.
Sphenoid.
Frontal.
Temporal.
The Correct Answer is D
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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
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.
Correct Answer is A
Explanation
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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