The _____ is located on the _____ bone and is responsible for protecting the pituitary gland.
sella turcica; ethmoid
crista galli; sphenoid
sella turcica; sphenoid
occipital condyle; occipital bone
crista galli; ethmoid
The Correct Answer is C
Choice A reason: The sella turcica is correctly named, but it is located on the sphenoid bone, not the ethmoid. This makes the pairing incorrect.
Choice B reason: The crista galli is a projection of the ethmoid bone and serves as an attachment point for the falx cerebri, not for protecting the pituitary gland. Additionally, it is not located on the sphenoid bone.
Choice C reason: This is the correct answer. The sella turcica is a saddle-shaped depression in the sphenoid bone that houses and protects the pituitary gland. It is a central feature of the cranial floor.
Choice D reason: The occipital condyles are located on the occipital bone and articulate with the first cervical vertebra. They have no role in protecting the pituitary gland.
Choice E reason: While the crista galli is correctly paired with the ethmoid bone, it does not protect the pituitary gland. Its function is related to the attachment of meninges.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: The talus is a tarsal bone in the ankle that articulates with the tibia and fibula. It is not embedded within a tendon and therefore not classified as a sesamoid bone.
Choice B reason: The radius is a long bone in the forearm and is not embedded in a tendon. It does not meet the criteria for a sesamoid bone.
Choice C reason: The femur is the longest bone in the body and is classified as a long bone. It is not a sesamoid bone.
Choice D reason: The hamate is one of the carpal bones in the wrist. It is not embedded in a tendon and is not considered a sesamoid bone.
Choice E reason: The patella is the most prominent example of a sesamoid bone. It is embedded within the quadriceps tendon and functions to protect the knee joint and enhance leverage during leg extension.
Correct Answer is D
Explanation
Choice A reason: Flat bones are typically thin and broad, such as the sternum or skull bones. They do not match the described dimensions of Emily’s bone.
Choice B reason: Irregular bones have complex shapes that do not fit into other categories, such as vertebrae. The bone described is not irregular.
Choice C reason: Short bones are roughly cube-shaped and found in areas like the wrist and ankle. A bone that is 3 inches long does not fit this category.
Choice D reason: Long bones are characterized by being longer than they are wide, typically found in the limbs. A bone that is 3 inches long and 1 inch wide fits this classification.
Choice E reason: Sesamoid bones are small, round bones embedded in tendons, like the patella. The described bone does not fit this category
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