Where would be the BEST place to find red marrow in an adult?
in the medullary cavity of a long bone
in the epiphysis of a flat bone
in the medullary cavity of a flat bone
in the epiphysis of a long bone
in the epiphyseal plate of a long bone
The Correct Answer is D
A. in the medullary cavity of a long bone
In adults, the medullary cavity contains yellow marrow, not red marrow.
B. in the epiphysis of a flat bone
Flat bones (e.g., skull) don’t have epiphyses. This answer is anatomically inaccurate.
C. in the medullary cavity of a flat bone
Flat bones don’t have a true medullary cavity. Red marrow is found in their spongy bone, not in a central cavity.
D. in the epiphysis of a long bone
Red marrow in adults is found in the spongy bone of the epiphyses of long bones and in flat bones like the sternum and pelvis.
E. in the epiphyseal plate of a long bone
The epiphyseal plate is made of cartilage, not marrow. It is involved in growth, not hematopoiesis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. edema
Edema involves fluid accumulation and can contribute to swelling and immune cell movement, but it does not directly wall off the injury site.
B. vasodilation of blood vessels
Vasodilation increases blood flow to bring immune cells and nutrients, but does not physically isolate the injury.
C. formation of a clot
A blood clot forms a physical barrier that helps prevent the spread of pathogens and walls off the injury.
D. all of the above
While A and B support inflammation and healing, only C directly achieves the goal of physically walling off the injured area. Therefore, "all of the above" is in
Correct Answer is D
Explanation
A. growth hormone
Deficiency in GH during childhood leads to dwarfism or delayed growth, so it’s definitely a suspect in short stature.
B. thyroid hormone
Thyroid hormone plays a critical role in metabolism and skeletal growth. Its deficiency can cause growth delays.
C. sex hormones
Estrogen and testosterone influence growth plate closure and stimulate growth during puberty. Imbalance can lead to short stature or delayed puberty.
D. calcitonin
Calcitonin helps regulate calcium levels, but it has a minor role in growth. Deficiency or excess does not cause short stature.
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