A child is growing at a rate appropriate for their age. What cells are responsible for the secretion of bone matrix that eventually results in bone growth?
Lamellae.
Osteoblasts.
Osteocytes.
Osteoclasts.
Osteoclasts.
The Correct Answer is B
Choice A rationale
Lamellae are layers of bone tissue arranged in concentric circles in compact bone, not cells responsible for bone matrix secretion.
Choice B rationale
Osteoblasts are the cells responsible for the secretion of bone matrix. They produce collagen and other substances necessary for bone formation and growth.
Choice C rationale
Osteocytes are mature bone cells derived from osteoblasts. They maintain bone tissue but do not secrete bone matrix.
Choice D rationale
Osteoclasts are cells involved in the resorption of bone tissue, not the secretion of bone matrix. They break down bone tissue during growth and repair.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
The largest area of the body without hair is not selected as it is not necessary for the graft to be hairless. The primary concern is matching the color and texture, not the absence of hair.
Choice B rationale
Any area that is not normally visible is not ideal as visibility is not the primary concern. The donor site needs to match the surgical site in color and texture to ensure a natural appearance.
Choice C rationale
An area matching the color and texture of the skin at the surgical site is selected to ensure the graft blends well with the surrounding skin and appears natural once healed.
Choice D rationale
An area matching the sensory capability of the skin at the surgical site is not typically a concern in graft selection. The focus is on the appearance and integration of the graft.
Correct Answer is C
Explanation
Choice A rationale
Swallowing involves the glossopharyngeal and vagus nerves, not the trigeminal nerve. Thus, trigeminal neuralgia does not typically affect swallowing.
Choice B rationale
Smelling involves the olfactory nerve (cranial nerve I), not the trigeminal nerve (cranial nerve V). Therefore, trigeminal neuralgia does not affect the sense of smell.
Choice C rationale
Trigeminal neuralgia involves the trigeminal nerve, which is responsible for sensation in the face and motor functions such as biting and chewing. Therefore, chewing can be significantly affected.
Choice D rationale
Tasting involves the facial nerve (cranial nerve VII) and glossopharyngeal nerve (cranial nerve IX), not the trigeminal nerve. Thus, trigeminal neuralgia does not typically affect taste.
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