The embryonic origin of the posterior pituitary gland is
A. glandular tissue from the cerebrum.
B. epithelium from the oral cavity.
C. an outpocket of the nasal cavity.
D. nervous tissue from the area of the hypothalamus.
Answer: D
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Acetylcholine
a. binds to cholinergic receptors on preganglionic neurons and skeletal muscle cells b. destroys acetylcholinesterase c. binds to muscarinic receptors d. is released from all postganglionic neurons e. does all of the above except b
The renal threshold represents the maximum amount of a particular substance that the tubular cells are capable of actively reabsorbing per unit of time
Indicate whether the statement is true or false
When is your body in acid-base balance?
A) when the loss of hydrogen ions is offset by the production of bicarbonate ions and pH becomes alkaline B) when the production of hydrogen ions exceeds the loss of hydrogen ions and pH becomes acidic C) when the loss of hydrogen ions exceeds the production of hydrogen ions and pH becomes alkaline D) when the production of hydrogen ions is precisely offset by the production of sodium ions and pH remains within normal limits E) when the production of hydrogen ions is precisely offset by their loss and pH remains within normal limits
The spleen filters ________; lymph nodes filter ________.
A. lymph; lymph B. blood; lymph C. lymph; blood D. blood; blood