Brain activity is decreased during sleep. In fact, the brainstem typically shows no activity at all
Indicate whether this statement is true or false.
FALSE
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Lack of sunlight will directly affect the formation of vitamin D. This implies that the specific cell type required for vitamin D synthesis using sunlight energy is the ___________.
a) keratinocyte b) chondroblast c) intestinal epithelial cell d) osteocyte
What is the stimulus for the release of glucagon?
A. Decreasing blood sodium levels B. Increasing blood calcium levels C. Decreasing blood glucose levels D. Increasing blood glucose levels
Which of the following statements describes a common response of an autonomic effector during the "fight-or-flight" response?
a) Gastric motility and secretory activity increases. b) Blood vessels serving skeletal muscles constrict. c) Adipose tissues stores away triglycerides for later use. d) The pupils of the eyes dilate. e) Blood vessels serving the kidneys and digestive organs dilate.
Ion pumps and phagocytosis are both examples of ________.
Fill in the blank(s) with the appropriate word(s).