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bio 252 endocrine system with complete verified solutions 2025.
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bio 252 endocrine system with complete verified solutions 2025.
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bio 252 endocrine system withcomplete verified solutions 2025
3 groups of major organ glands - answer endocrine glands that
serve only as endocrine glands (pituitary, pineal, parathyroid,
thyroid, thymus, adrenal)
endocrine glands that can also be exocrine (pancreas, ovaries,
testis)
hypothalamus - can synthesize/control hormones to affect other
endocrine glands
endocrine vs. exocrine - answer endocrine - release chemicals
within body
exocrine - release chemicals to outside of body
nervous system vs. endocrine system - answer Nervous system:
uses electrochemical signals
fast and short frequency
all or none - strength of signal based on frequency
Endocrine system:
uses hormones as system
slow and long
strength of signal based on amplitude
, amino acid based hormones - answer water soluble, unbound in
blood, short duration, activates secondary messenger at plasma
membrane of cell to initiate a cascade of events
steroid hormones - answer lipid soluble but not water soluble,
bound to proteins in the blood, prolonged duration, passively
diffuse through the cell plasma membrane and bind to a receptor
within the cell and act as transcription factor
hypothalamus - answer link between nervous system and
endocrine system
posterior pituitary - answer not a gland, just used to store
neurohormones made by hypothalamic neurons
2 polypeptide hormones stored and secreted by posterior pituitary -
answer ADH and oxytocin
ADH - answer hormone that is responsible for the homeostasis of
water. Osmoreceptors in the hypothalamus monitor the solute
concentration of the blood
With high concentration of solutes in the blood, ADH **blank**. With
low solutes in the blood, ADH **blank**. - answer 1. ADH is
released and preserves water by regulating urine production in the
kidney
2. ADH is not released witch causes water loss via urine.
oxytocin - answer hormone that helps sperm reach eggs, induces
labor, and ejection of breast milk
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