Define ingestion
A) The movement of nutrients across the digestive epithelium and into the bloodstream.
B) The discharge of feces.
C) The enzymatic breakdown of food.
D) Entry of food and liquids into the digestive tract through the mouth.
E) The crushing and shearing of food.
Answer: D
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Indicate whether the statement is true or false
The plateau phase seen during the action potential of a cardiac muscle cell is due to the
A. sodium-potassium pump. B. continuing to have open Ca2+ channels. C. opening of Na+ channels. D. closure of Cl? channels. E. closing of Ca2+ channels.
The connective tissue layer that surrounds each bundle of muscle fibers is called the
A. fascia. B. endomysium. C. epimysium. D. fascicle. E. perimysium.
Besides capillaries, villi also contain lymphatic vessels called
A) gastric glands. B) lacteals. C) plicae circulares. D) muscularis mucosae. E) haustra.