Lecture 15 Part 1 Flashcards
Exocrine=secretes products into.. (3)
ducts, sweat, salivary gland
Endocrine=secretes products into..
body fluids (blood) to affect target cells
Endocrine- comm. w/cells via chem. called
hormones
Steroid hormones (3 facts)-
lipid based, can pass thru cell memb. , bind to nucleus (can control gene expression)
Nonsteroid hormones (2 facts)-
nonlipid-based; water soluble, cannot pass thru cell memb. (must bind to cell receptors)
Hormones: precisely regulated because can have..
dynamic effects
Thyroid gland secreted thyroid hormones that:
incr. metab. rate
-(elevate O2 conspt./heat prod. by tissues)
What gland influences normal growth; promotes metamorphasis in amph. , influ. gonad maturation ?
Thyroid gland
Abnormal growth: Hypothyroidism-
underproduction of thyroid hormones
Hypothyroidism=
stunted growth, learning disabilities
Hyperthyroidism-
overproduction of thyroid hormones
Hyperthyroidism=
heightened activity, nervousness, bulging eyes, rapid weight loss
(PTH )Parathyroid hormone regulates
blood calcium levels
In times of greater Ca+ need, PTH acts on:
bones, kidneys, intestines
Adrenal glands produce
corticosteroid hormones in cortex