The gastric phase of gastric secretion is triggered by the
A) sight, thought, or smell of food.
B) entry of food into the stomach.
C) entry of chyme into the small intestine.
D) entry of chyme into the large intestine.
E) release of cholecystokinin and secretin by the small intestine.
Answer: B
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Receptors that are stimulated by changes in chemical concentrations are called
thermoreceptors. Indicate whether the statement is true or false
Increasing blood concentrations of carbon dioxide and hydrogen ions have similar effects
upon the respiratory areas due to A) both increasing pH and inhibiting the respiratory areas. B) their similarity in chemical structure, inhibiting the respiratory rate. C) an increase in carbon dioxide, increasing hydrogen ions. D) both chemically bonding, decreasing the respiratory rate.
The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "C"?
A. Major site of ATP synthesis when oxygen is available B. Site of protein synthesis C. Directs cellular activities, contains DNA D. Contains digestive enzymes E. Outer boundary of cell, controls entry and exit of substances
The ________ projects anteriorly to form Adam's apple.
A. thyroid cartilage B. hyoid bone C. epiglottis D. cricoid cartilage