In the lungs, surfactant is secreted by ____ cells

a. beta
b. parietal
c. alveolar
d. alpha


Ans: c. alveolar

Anatomy & Physiology

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Which of these is a first-class lever?

A. The humeroulnar joint B. The talocrural joint C. The knee joint D. Any metacarpophalangeal joint E. The atlanto-occipital joint

Anatomy & Physiology

The maintenance of a relatively constant internal environment in an organism is termed

A) positive feedback. B) homeostasis. C) negative feedback. D) effector control. E) integration.

Anatomy & Physiology

A person working outside in the hot sun can perspire a great deal. This increase in perspiration results in an increase in water loss from the body. Increased water loss causes the blood osmolality to increase. This increased osmolality is "sensed" by the ________.

A. kidneys B. cerebral cortex C. osmoreceptors D. anterior pituitary E. baroreceptors

Anatomy & Physiology

Which of the following polysaccharides performs a structural role?

A) Amylose B) Glycogen C) Chitin D) Amylopectin

Anatomy & Physiology