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Endocrine System

by Anu J
3 Pages
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Natural Science
NATS 1675
Barbara Czaban

Notes by: ANU J The Endocrine System o Contains endocrine glands that secrete hormones into blood stream  Released in short bursts  Gland is simulated by signal  Gland releases hormone into blood  When gland stops receiving signal/stimulation, hormone concentration in blood stream goes down o Main hormonal glands to know:  Hypothalamus  Regulates the pituitary gland  Pituitary gland  Stimulates: o TSH - thyroid gland o ACTH – adrenal gland  Produces and releases: o OT – oxytocin (for uterine contraction, endometrium) o PRL - prolactin (for producing milk) o GH – growth hormone o Gonadotrophins  FSH – follicle-stimulating hormone (for egg/sperm development)  LH – luteinizing hormone (for producing testosterone) o ADH – antidiuretic hormone (for water retention)  Thyroid gland  Increases metabolic rate (T3 and T4)  Regulates development  Lowers blood calcium (calcitonin)  Parathyroid gland  Raises blood calcium (parathyroid hormone, PTH)  Pineal gland  Helps with sleep (melatonin)  Maybe helps with puberty (unknown to scientists)  Adrenal glands  Raises blood glucose (epinephrine, norepinephrine, cortisol)  Affects sodium/potassium levels (aldosterone)  Produces small amounts of sex hormones Professor: Barbara Czaban Course: Human Development (NATS 1675) Notes by: ANU J  Pancreas  Monitors blood glucose levels (insulin, glucagon)  Thymus  Produces t-cells (thymosine)  Gonads  Females: ovary
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