What is the purpose of the secretions of the serosa?
A. Allow abdominal organs to slide against each other
B. Reduce acidity
C. Digest carbohydrates
D. All of the choices are correct.
Answer: A
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Which of the following emphasizes mechanism over purpose?
a. a person breathes to obtain oxygen. b. a person sweats to cool off. c. a person's stomach secretes digestive juices because it is stimulated by the nervous system. d. a person's heart beats to pump blood. e. a person's kidneys produce urine to eliminate wastes from the body.
The alveoli are encircled by capillaries
Indicate whether the statement is true or false
The postganglionic parasympathetic fibers that are controlled by pelvic splanchnic nerves innervate thea: Large intestineb: Reproductive organsc: Salivary glandsd: Pupillary constrictor musclese: Urinary bladderf: Ureters
A. b, c, e B. a, d, e C. a, c D. a, b, e, f E. c, d, f
Proteins that function in immunity include
A. enzymes. B. antibodies. C. hormones. D. collagens. E. fibrin.