Which organ system directs immediate responses to stimuli?
A) endocrine
B) nervous
C) cardiovascular
D) lymphatic
B
Explanation:
A) The endocrine system directs long-term changes in the activities of the other organ systems.
C) The cardiovascular system distributes blood cells, water and dissolved materials including nutrients, waste products, oxygen, and carbon dioxide.
D) The lymphatic system defends against infection and disease.
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