The perineum is a diamond-shaped area at the inferior end of the trunk between the buttocks and thighs of both males and females
a. True
b. False
Indicate whether the statement is true or false
True
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Which of the following hormones is produced by the cells marked in the thyroid follicle shown in the histology picture?
a) calcitonin b) vasopressin c) triiodothyronine (T3 ) d) antidiuretic hormone (ADH) e) calcitriol
The "dark current" of photoreceptors refers to
A. the exit of Na+ and Ca2+ out of the cell when light is not hitting the cell. B. the entry of Na+ and Ca2+ into the cell when light is not hitting the cell. C. the entry of K+ into the cell when light is not hitting the cell. D. the exit of K+ out of the cell when light is not hitting the cell.
What is the final electron acceptor of the electron transport chain?
A. NADH B. Carbon dioxide C. Water D. Oxygen
What is an example of a Type I hypersensitivity reaction?
A) ABO incompatibility B) autoimmune disorder C) contact dermatitis D) hay fever