The airways that carry air to and from the exchange surfaces of the lungs are collectively called the ________.
Fill in the blank(s) with the appropriate word(s).
respiratory tract
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Nicotine stimulates cholinergic receptors of the autonomic nervous system. Based on this information, how would cigarette smoking affect the cardiovascular system?
What will be an ideal response?
The skin wound was ______________________ to remove dirt
Fill in the blank(s) with correct word
The fovea
a. is located in the exact center of the retina. b. contains a greater abundance of rods than cones. c. is the point on the retina at which the optic nerve leaves and blood vessels pass through. d. both (a) and (b) above. e. all of these answers.
A virus differs from other pathogens in that it is
A. not capable of reproduction outside a living cell. B. larger. C. more dangerous. D. multicellular.