Which hormone ultimately stimulates the activity of osteoclasts and promotes increased calcium absorption in the digestive tract?
A. Triiodothyronine
B. Calcitonin
C. Parathyroid hormone (PTH)
D. Growth hormone (GH)
E. Somatostatin
C. Parathyroid hormone (PTH)
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Valves in veins
A. make the use of a skeletal muscle pump unnecessary for venous blood flow. B. are found only in the largest veins. C. are formed of the tunica media. D. are the leading cause of high blood pressure. E. cause venous blood flow to go in only one direction.
The space bounded by the labia minora is the
A) vaginal fornix. B) vestibule. C) hymen. D) clitoris. E) isthmus.
Label component "C" on the reflex arc
A. sensory receptor B. effector organ C. sensory neuron D. motor neuron E. interneuron
The ureters are lined by what kind of epithelium, which allows them to be stretched when undergoing peristalsis and moving urine?
simple cuboidal stratified squamous simple columnar transitional