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Endocrine System BIO-431 Lecture Exam Questions and Answers
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Endocrine System BIO-431 Lecture Exam Questions and Answers
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Endocrine System BIO-431 LectureExam Questions and Answers
Hormones of the Posterior Pituitary - Answer-Osmoreceptors, and Baroreceptors
Releasing Hormones of the Anterior Pituitary - Answer-GHRH, TRH, CRH, GnRH, and
PRH
Inhibiting Hormones of the Anterior Pituitary - Answer-GHIH
Endocrine System Functions - Answer-Metabolism and tissue maturation
Ion regulation
Water balance
Immune system regulation
Heart rate and blood pressure regulation
Control of blood glucose and other nutrients
Control of reproductive functions
Uterine contractions and milk release
Membrane-Bound Receptors - Answer-Integral proteins with receptor site at
extracellular surface. Interact with ligands that cannot pass through the plasma
membrane.
Ligands - Answer-Water-soluble or large-molecular-weight hormones. Attachment of
ligand causes intracellular reaction.
Large proteins, glycoproteins, polypeptides; smaller molecules like epinephrine and
norepinephrine.
Up-Regulation - Answer-Some stimulus causes increase in synthesis of receptors for a
hormone, thus increases sensitivity to that hormone.
Hormones associated with Up-Regulation - Answer-Follicle Stimulating Hormones
(FSH)
Luteinizing Hormone (LH)
Growth Hormone - Answer-Stimulates uptake of amino acids; protein synthesis - growth
of bones, muscles and other organs
Stimulates breakdown of fats to be used as an energy source but stimulates synthesis
of glycogen: glucose sparing
Regulates blood levels of nutrients after a meal and during periods of fasting
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