BIOL 260 Study Guide - Midterm Guide: Cytokinin, Collecting Duct System, Parathyroid Gland
Document Summary
Nervous system: sensory detection > signal integration in brain > muscular response. Electrical signal within cell (long dist), to target cell at synapse (short), synaptic can be electrical or chemical. Organization: sensory > cns > (efferent) somatic or autonomic > if autonomic, symp or parasymp. Sympathetic: preganglionic neuron (short) > ach > post gang neuron (long) > norepin to target organ. Some sympathetic neurons don"t synapse with neuron, make contact w/ chromaffin cells in adrenal medulla. Norepin binds to multi recep, diff sig trans cascades, a1 smooth, b heart, smooth relax, glycogenolysis. Endocrine: release directly into bloodstream (pituitary, parathyroid, adrenal, pancreas, testis, ovary) Chemical signal released by single tissue, carried in blood, received by target tissue. Stress response: chronic memory loss, weight change, immune suppress, etc. 1. endocrine hypothalamus crf released anterior pituit acth released adrenal cortex cortisol target. Cortisol mobilize energy reserves, synth & release glucose from liver, ^ metabolism of fat/protein.
