A buffer system in blood involves
A. hemoglobin binding hydrogen ions in red blood cells.
B. the chloride shift through the cell membranes.
C. deoxyhemoglobin generated in white blood cells.
D. phosphate buffer in the renal system.
Answer: A
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Select the correct statement about TSH
a. A buildup of the thyroid hormone stimulates its production by negative feedback. b. It is secreted by the thyroid gland. c. It is stored in the posterior pituitary. d. It stimulates the thyroid gland. e. Its activity is unrelated to a set point.
Which type of blood vessel sometimes contains valves?
a. arteriole. b. artery. c. capillary. d. vein. e. none of the above
ADH (antidiuretic hormone) is synthesized by the ________, while TSH (thyroid-stimulating hormone) is synthesized by the ________.
A. posterior pituitary; hypothalamus B. posterior pituitary; thyroid C. kidney; thyroid D. hypothalamus; anterior pituitary E. kidney; anterior pituitary
The major movement produced during quiet breathing is accomplished by the ________.
A. transverses thoracis B. diaphragm C. internal intercostals D. external intercostals E. scalenes