The structure in which cells repeatedly divide to produce new cells that form a hair is the
A. hair matrix.
B. Merkel region.
C. hair shaft.
D. lunula.
Answer: A
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The integrating centers for temperature-regulating reflexes are located in the brain stem.
Answer the following statement true (T) or false (F)
What organ(s) is(are) nervous in structure but endocrine in function?
A) gonads B) thyroid C) posterior pituitary D) anterior pituitary E) thymus
Muscle cells contain numerous ________ to serve their high demand for ATP.
A. inclusions B. ribosomes C. Golgi vesicles D. mitochondria E. lysosomes
Which statement is accurate?
A. Filtration dominates at the venous end of a capillary bed, and is driven by hydrostatic pressure. B. Filtration dominates at the arterial end of a capillary bed, and is driven by hydrostatic pressure. C. Filtration dominates at the venous end of a capillary bed, and is driven by osmotic pressure. D. Filtration dominates at the arterial end of a capillary bed, and is driven by osmotic pressure.