The anatomic arrangement of juxtamedullary nephrons in the kidneys is such that the glomerulus, proximal tubule, and distal convoluted tubule are in the renal cortex, while the loop of Henle and collecting ducts lie mainly in the renal medulla.
Answer the following statement true (T) or false (F)
True
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Cyanide poisoning quickly leads to death because it blocks the final cytochrome molecule in the electron transport system. Why is this blockage lethal?
A) All hydrogen ion pumps deactivate. B) NADH molecules cannot give off their electrons. C) FADH2 molecules cannot give off their electrons. D) Electrons cannot transfer to oxygen. E) Coenzyme Q disassociates and becomes nonfunctional.
Pituitary dwarfism results from a decreased secretion of ________ , which as a result decreases the rate of cell division of ________.
A. thyroid hormones; osteocytes in the periosteum B. thyroid hormones; osteoclasts in the compact bone C. growth hormone; fat cells in the medullary cavity D. growth hormone; cartilage cells in the epiphyseal plate
The ____________________ serves as a common passageway for both the respiratory and digestive systems
Fill in the blank(s) with correct word
The azygos vein empties directly into the right atrium.
Answer the following statement true (T) or false (F)