What role do hormones play in hunger and satiety?
Levels of ghrelin, a hormone produced by P/D1 cells, lining the fundic region of the stomach, rise before meals to initiate hunger and decline shortly after eating to curb appetite. Ghrelin is also antagonistic to leptin, a fat-tissue-derived hormone that induces satiety. Another hormone from the stomach and small intestine, obestatin, decreases appetite. The same gene encodes both ghrelin and obestatin.
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Age-related changes in the heart include
A) decreased pressures in the great vessels. B) reduction in the elasticity of the fibrous skeleton. C) increased size of coronary vessels. D) increased maximum cardiac output. E) None of the answers are correct.
Which type of tissue forms linings or coverings?
A. Connective tissue B. Epithelial tissue C. Nervous tissue D. Muscle tissue
Insulin-like growth factors are produced in most tissues, but primarily in the liver
Indicate whether the statement is true or false
A prominent lateral muscle of the neck that can cause flexion of the neck or rotate the head is the
a. digastric b. mylohyoid c. sternocleidomastoid d. buccinator e. platysma