Most of the reabsorption of filtered calcium is unregulated and occurs in the ________, but an additional amount can be reabsorbed in the ________, depending on the plasma concentration of parathyroid hormone.
A. proximal convoluted tubule; descending loop of Henle
B. distal convoluted tubule; medullary collecting ducts
C. distal convoluted tubule; renal corpuscle
D. distal convoluted tubule; proximal convoluted tubule
E. proximal convoluted tubule; distal convoluted tubule
Answer: E
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Select the correct statement about complement.
A) An adaptive immune mechanism is often involved in directing complement to its target. B) Complement can be activated through three pathways: classical, secondary, and alternate. C) The membrane attack complex consists of complement proteins C3a through C5. D) Complement proteins C1 through C9 act exclusively in the classical pathway.
Using Figure 14.1, match the following:
1) Myelin sheath.
2) Cell body of ANS preganglionic neuron.
3) Cell body of ANS postganglionic neuron.
4) Cell body of the somatic neuron.
A sterile solution of normal saline with added antibiotics was slowly dripping into a patient's veins. Which solute is being used in the same concentration as in the blood?
A. Sodium bicarbonate B. Sodium chloride C. Sodium hydroxide D. Sodium phosphate
Urine formation involves
A. filtration of the plasma. B. secretion into the filtrate. C. reabsorption from the filtrate. D. All of the choices are correct.