Nervous & Endocrine Systems: Coordination, Hormones & Feedback, Slides of Biology

Download Nervous & Endocrine Systems: Coordination, Hormones & Feedback and more Slides Biology in PDF only on Docsity! Co-ordination Electrical messenger Chemical messenger Docsity.com Nervous System Brain and »_— Nerve trunk spinal cord are _7 Transverse e central nervous system Flatworm<\!) i} | (platyhelminthes)//// Nerve to Segmental nerve ganglion "Brain" Ganglion Nerves to muscles ~ Squid : (Annelida) | Wie use) Docsity.com Synaptic Cleft Neurotransmitter in vesicle release to cleft. It diffuse to another side and attach on surface receptor. Enzyme next to receptor break down. Transmitter Docsity.com dorsal root ganglion dorsal root (sensory nerve) association neurone spinal cord ventral root (motor nerve) motor neurone sensory neurone effector (muscle) receptor (pain) Reflex arc : sensory, association, motor neurones Docsity.com Peripheral Nervous System consist of cranial nerves and spinal nerves these nerves leave CNS and run out to every part of the body spinal nerve cranial nerve Docsity.com Water soluble hormone Water soluble hormone only attach to membrane receptor. Docsity.com Fat soluble hormone (steroid) Steroid can penetrate cell membrane and bind to internal receptor. Docsity.com Example of steroids Hc. eet BO CH 5 CH 2 cH, cH; HO Cholesterol Docsity.com