Which of the following is not true of oxytocin?
A) It is one of the few hormones that is regulated by a positive feedback loop.
B) It is produced in the thyroid gland.
C) It stimulates "milk letdown" in nursing mothers.
D) It causes the contractions of the uterus during labor.
B
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Typically, there are ________ papillary muscles that project from the wall of the left ventricle and attach to the chordae tendineae that support the left AV valve.
A. six B. two C. a highly variable number of D. three E. no
Renal plasma clearance
A. is lower than GFR for substances that are both filtered and secreted. B. is the same as GFR for substances that are both filtered and secreted. C. is the amount of water loss from the plasma to the urine over the course of one hour. D. is the volume of plasma that can be entirely cleared of a substance in one minute.
Which of the following is not true about the anatomy of the urinary system?
A. The kidneys are retroperitoneal. B. The right kidney is located more inferiorly than the left kidney. C. The kidneys are at equal heights within the pelvic cavity. D. The urethra of males is longer than the urethra of females. E. The ureters connect the kidneys to the urinary bladder.
In the male, this hormone stimulates interstitial endocrine cells to produce testosterone
A) LH B) estrogen C) FSH D) progesterone