The infundibulum is a ___________.
A. mass of endocrine and neural cells
B. portal system between the hypothalamus and the pituitary gland
C. bulky nucleus composed of the paraventricular nucleus and the supraoptic nucleus
D. depression of the sphenoid bone that protects the pituitary gland
E. projection of the hypothalamus from which the pituitary gland hangs
E. projection of the hypothalamus from which the pituitary gland hangs
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Cell membranes are said to be ________ because they allow some substances to pass but not others
A) impermeable B) doubly amphipathic C) hydrophilic D) selectively permeable E) hydrophobic
Normal urine has a specific gravity that is ________ than the specific gravity of pure water; dehydration leads to a __________ in the specific gravity of urine
A. higher; increase B. higher; decrease C. lower; decrease D. lower; increase
Peripheral thermoreceptors monitor skin temperature
Indicate whether the statement is true or false
It has been suggested that the lymphatic system evolved when animals became larger and the hydrostatic pressure in their circulatory systems rose. Explain how this suggestion is consistent with the function of the lymphatics-how does high blood pressure make lymphatic function essential? Also, what other advantages were gained by animals that developed lymphatic systems?
What will be an ideal response?