Enzymes are important in:

a. mechanical digestion
b. deglutition
c. chemical digestion
d. both A and C above


c. chemical digestion

Anatomy & Physiology

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Secretin is a hormone that is secreted by the

A. stomach. B. small intestine. C. large intestine. D. liver. E. pancreas.

Anatomy & Physiology

A 55-year-old woman develops a hiatal hernia in which the fundus of the stomach protrudes through the esophageal hiatus of the diaphragm into the thorax. Which of the following structures is/are at greatest risk of injury during surgical repair of this hernia?

(A) Thoracicduct (B) Azygosvein (C) Vagus nerves (D) Sympathetic chains (E) Superior epigastric vessels

Anatomy & Physiology

The temperature control center within the anterior region of the hypothalamus is activated by ______ and initiates reflexes that mediate ______

a. cold; heat production and heat conservation b. cold; heat loss c. warmth; heat loss d. warmth; heat production and heat conservation e. warmth; vasoconstriction

Anatomy & Physiology

What characteristic do simple diffusion and facilitated diffusion share?

A. Both require cellular energy for the transport of substances. B. Both move a substance from a region of higher concentration to one of lower concentration without using cellular energy. C. Both move water across a semipermeable membrane. D. Both require a special carrier molecule to move substances across the membrane.

Anatomy & Physiology