Exam 3: BIOS 252 / BIOS252 – Anatomy and Physiology II (2025) | Questions & Answers with Verified SOLUTION.

Exam 3: BIOS 252 / BIOS252 – Anatomy and
Physiology II (2025) | Questions & Answers with
Verified SOLUTION.



The Endocrine System >ANSWER: composed of a
group of organs and ductless glands that produce
hormones.



hormones >ANSWER: chemical "messengers" of the
endocrine system that are released into the blood



Endocrine System Functions >ANSWER: growth,
reproduction, metabolism, behavior, and water-
electrolyte-nutrient balance.



Endocrine System Regulates >ANSWER: Growth
Hormone - GH

Thyroxine (T4) & Triiodothyronine(T3)

Follicle-Stimulation Hormone (FSH) & Luteinizing
Hormone(LH)

Melatonin

, Aldosterone, Antidiuretic Hormone, Insulin,
Glucagon, Calcitonin & Parathyroid Hormone



2 categories of chemically hormones >ANSWER:
Protein Hormones - amino-acids compounds

Steroid Hormones - lipid-molecules from cholesterol



Negative Feedback >ANSWER: most common
mechanism for the regulation for the release of
hormones. <rising level of a hormone or the action of
the target tissues inhibits further release of the
hormone.



Sources that Control Hormone Levels >ANSWER:
Neural Control -

Hormonal Control -

Humoral Control -



Neural Control >ANSWER: release of some hormones
directly controlled by the nervous system