题目内容

Which kind of hormones are characterized by four interlocking carbohydrate rings:

A. Steroids
B. Amino acid-derived
C. Polypeptide and proteins
D. Eicosanoids

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Inositol triphosphate (IP3) triggers the release of Ca2+ from the :

A. ribosome
B. Golgi complex
C. endoplasmic reticulum
D. mitochondria

Which one does NOT belong to negative feedback?

A. Childbirth
B. Regulation of TSH by T4
C. Regulation of TRH by TSH
D. Baroreceptor reflex

____ is the study of the endocrine glands or hormones.

Exocrine glands include certain , , and glands .