Biology 2601A/B Study Guide - Final Guide: Collagen, Nernst Equation, Troponin
20 Dec 2017
School
Department
Course
Professor
Document Summary
Chemical communication: scale: animal scan communicate chemically over a broad range of cells. Individuals cells communicate directly with each other through gap junctions. exo - out of: cells or organs that secrete into environment or into body cavities, usually occurs through a duct, a tube that connects where these substances are made and its final destinations, exocrine glands, ex. Secretes into the external environment: takes water and salts from blood, produces sweat, duct carries sweat to the surface of the skin, keeps the body cool, ex. Pancreas: multi-facetted organ, has many different cells types, some of which have exocrine functions, pancreas produces bicarbonate which is secreted through the pancreatic duct. Hormone: chemical produced and released by secretory cells that reaches its target cells through the circulatory system: this excludes neurons that release things at chemical synapses, neurotransmitters are technically not hormones. Hormones classes: based on chemical composition, determine nature of action.
