Card 2 / 36: Endocrine glands ________.
A)
secrete hormones that travel through a duct to the target organs
B)
release neurotransmitters into the synaptic cleft
C)
secrete chemical messengers that travel in the bloodstream
D)
include sebaceous glands and sweat glands
Answer:
C) secrete chemical messengers that travel in the bloodstream
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