Generally speaking, vaccinations are effective in combating future infections because they induce the production of
A. helper T cells.
B. neutrophils.
C. prostaglandins.
D. mutations in the host genome.
E. memory cells.
E. memory cells.
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Use the word bank to identify the labeled structures pictured below: sacral nerves, lumbar nerves, brain, common fibular nerve, ulnar nerve, spinal cord, cranial nerves, thoracic nerves, cervical nerves, radial nerve, tibial nerve, median nerve, sciatic nerve 
A:________B:________C:________D:________E:________F:________G:________H:________I:________J:________K:________L:________M:________
What will be an ideal response?
A mountain range along the coast of a continent is located perpendicular to the prevailing sea breeze. Which one of the following describes an area where the rain shadow is located?
A. On the leeward side of the mountain where warm, moist air is descending B. On the windward side of the mountain where cool, dry air is rising C. On the windward side of the mountain where warm, moist air is rising D. On the leeward side, far inland from the mountain E. On the leeward side of the mountain where cool, dry air is descending
Marine vertebrates are _____ to their environment
A) isotonic B) hypotonic C) hypertonic D) osmotonic
Acetylcholine ____ skeletal muscle and ____ cardiac muscle
a. stimulates; also stimulates b. stimulates; inhibits c. inhibits; stimulates d. inhibits; also inhibits e. binds receptors on; does not bind receptors on