Bio 431 Exam Questions With New
Update Solutions A+ Pass
Exocrine glands - CORRECT ANSWER-secrete their products into ducts that
carry the secretions into body cavities, into the lumen of an organ, or to the outer
surface of the body
Endocrine glands - CORRECT ANSWER-secrete their products into the IF
surrounding the secretory cells rather than into ducts. From the IF, hormones
diffuse into blood capillaries and blood carries them to target cells throughout the
body. Because of their dependence on the cardiovascular system to distribute their
products, endocrine glands are some of the most vascular tissues in the body
Exocrine glands - CORRECT ANSWER-these include sudoriferous, sebaceous,
mucous and digestive glands
Endocrine glands - CORRECT ANSWER-these include the pituitary, thyroid,
parathyroid, adrenal and pineal glands
- MOST ENDOCRINE HORMONES ARE CIRCULATING HORMONES
, Circulating hormones - CORRECT ANSWER-pass form the secretory cells that
make them into IF and then into blood -- over time inactivated by the liver and
excreted by the kidneys
Local hormones - CORRECT ANSWER-act locally on neighboring cells or on the
same cell that secreted them without first entering the bloodstream
ex: IL2
Paracrines - CORRECT ANSWER-local hormones that act on neighboring cells
Autocrines - CORRECT ANSWER-local hormones that act on the same cell that
secreted them
Lipid soluble hormones - CORRECT ANSWER-soluble in lipids, require
transport proteins, and can be ingested because they are not split apart during
digestion; EX: steroid hormones, thyroid hormones and nitric oxide
Steroid hormones - CORRECT ANSWER-derived from cholesterol, each steroid
hormone is unique due to the presence of different chemical groups making for a
large diversity of functions
ex: estrogens, testosterone, progesterone, calcitriol
Thyroid hormones - CORRECT ANSWER-T3 and T4 are synthesized by attached
to iodine to tyrosine, the two benzene rings within the molecule makes them very
lipid soluble
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
Update Solutions A+ Pass
Exocrine glands - CORRECT ANSWER-secrete their products into ducts that
carry the secretions into body cavities, into the lumen of an organ, or to the outer
surface of the body
Endocrine glands - CORRECT ANSWER-secrete their products into the IF
surrounding the secretory cells rather than into ducts. From the IF, hormones
diffuse into blood capillaries and blood carries them to target cells throughout the
body. Because of their dependence on the cardiovascular system to distribute their
products, endocrine glands are some of the most vascular tissues in the body
Exocrine glands - CORRECT ANSWER-these include sudoriferous, sebaceous,
mucous and digestive glands
Endocrine glands - CORRECT ANSWER-these include the pituitary, thyroid,
parathyroid, adrenal and pineal glands
- MOST ENDOCRINE HORMONES ARE CIRCULATING HORMONES
, Circulating hormones - CORRECT ANSWER-pass form the secretory cells that
make them into IF and then into blood -- over time inactivated by the liver and
excreted by the kidneys
Local hormones - CORRECT ANSWER-act locally on neighboring cells or on the
same cell that secreted them without first entering the bloodstream
ex: IL2
Paracrines - CORRECT ANSWER-local hormones that act on neighboring cells
Autocrines - CORRECT ANSWER-local hormones that act on the same cell that
secreted them
Lipid soluble hormones - CORRECT ANSWER-soluble in lipids, require
transport proteins, and can be ingested because they are not split apart during
digestion; EX: steroid hormones, thyroid hormones and nitric oxide
Steroid hormones - CORRECT ANSWER-derived from cholesterol, each steroid
hormone is unique due to the presence of different chemical groups making for a
large diversity of functions
ex: estrogens, testosterone, progesterone, calcitriol
Thyroid hormones - CORRECT ANSWER-T3 and T4 are synthesized by attached
to iodine to tyrosine, the two benzene rings within the molecule makes them very
lipid soluble
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
