NURSING 2LA2 Lecture Notes - Lecture 8: Thyroid, Corpus Luteum, Releasing And Inhibiting Hormones
Document Summary
Making hormones and circulating them throughout the body. Brodcasts hormonal messages throughout the body (not a direct transport system) Effects can last days rather than miliseconds like the nervous system. They are slow to act allowing for gradual growth. Eg smooth muscles of the uterus contracting because of hormones. One would want them to act slowly rather than shoot out the baby. Eg epinephrine norepinephrine dopamine can cross synapses but can also be released by the adrenal glands making them hormones. Every cell produces hormones as means of communication between one. Adrenal glands- produce large amounts (grams even!) of hormones. Temporary endocrine glands exist- in female: corpus luteum producing progesterone. Gigantism- hypersecretion of growth hormone(gh) --->small tumor which releases gh can be the cause of this. Cushings desiese -------> hypersecretion of cortisol-----> tumor creates more cortisol (coming from the adrenal cortex) Hypothyroidism-----> low amount of circulating thyroid hormone----> if hyperthyroidism goiter may be caused.
