In animals coordination is achieved by means of_________?
Correct answer: D. Both b and c
- A. Respiratory system
- B. Nervous system
- C. Endocrine system
- D. Both b and c
Explanation
Animal coordination depends on both the nervous system, which sends rapid electrical signals, and the endocrine system, which releases hormones for generally slower and longer-lasting effects. Choosing only the nervous system ignores hormonal coordination, while choosing only the endocrine system ignores nerve impulses.
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About Chemical Coordination and Hormones
Chemical coordination uses hormones released by endocrine glands and carried in blood to specific target cells. Coverage includes the pituitary, thyroid, pancreas, adrenal glands, ovaries and testes, feedback control, and the contrast between slower, longer-lasting hormonal responses and rapid nervous coordination.
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