Which of the following is an example of a unicellular gland?
A. Macrophage
B. Goblet cell
C. Hormone-secreting cell
D. Holocrine cell
E. Sudoriferous cell
B. Goblet cell
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As blood travels through a systemic capillary and exchanges gases with systemic cells,
A. the partial pressure of oxygen in blood decreases as it goes from arterioles to venules. B. the partial pressure of oxygen in blood increases as it goes from arterioles to venules. C. the partial pressure of oxygen on blood remains the same as it goes from arterioles to venules.
Select the correct statement about the hormonal events of the ovarian cycle.
A) Rising levels of estrogen start follicle development. B) High estrogen levels result in a surge of LH release. C) The follicle begins to secrete progesterone in response to estrogen stimulation. D) The LH surge stimulates further development of the secondary oocyte.
Answer the following statements true (T) or false (F)
1. When the kidney secretes hydrogen ions, it lowers the pH of the blood. 2. When the kidney secretes hydrogen ions, it lowers the pH of the urine. 3. When the kidney secretes a hydrogen ion, it absorbs a sodium ion. 4. When the kidneys acidify the urine, they conserve sodium bicarbonate. 5. In the kidney, an amino group accepts a hydrogen ion to form ammonia, which is excreted in the urine.
Which structure(s) is/are neuroendocrine in nature?
a. anterior pituitary b. posterior pituitary c. hypothalamus d. Both a and b e. Both b and c