LIFESCI 2 Lecture Notes - Lecture 14: Prenatal Development, Spermatogenesis, Cortisol
Document Summary
Uses the blood as a medium to transport the hormones. 2 types of endocrine organs: pure/primary endocrine organ: only function is releasing hormones, mixed organ: have a function but also release hormones. Endocrine glands: major glands, hypothalamus, pineal, pituitary, thyroid, parathyroid, adrenal, pancreas, gonads. Pumps blood but also releases a hormone: stomach, kidneys, small intestine e. i. Both are a system of control, but: nervous system uses synapses & neurotransmitters, endocrine system is a long-distance connection b. i. Endocrine: uses blood for transport of chemical messengers (hormones, endocrine gland releases hormone into blood, hormone travels, & eventually reaches specific part of the body. Functional hormones must: have unique function, have unique target cells/target organs b. i. Every single cell in the body is exposed to the hormone, yet only selective cells respond to the hormone b. i. 1. This is possible because target cells have matching protein receptors b. i. 2.
