Physiology 2130 Study Guide - Final Guide: Neuropeptide Y, Orexin, Leptin

• School: Western University
• Department: Physiology
• Course: Physiology 2130
• Professor: Anita Woods

Document Summary

Hypothala(cid:373)us (cid:862)u(cid:374)der thala(cid:373)us(cid:863): i(cid:374)side (cid:271)rai(cid:374) o(cid:374) (cid:448)e(cid:374)tral surfa(cid:272)e (cid:894)4g(cid:895) Thalamus: receives sensory sends to hypo to react (hemostasis) Hypothalamic functions: control ans, neuroendocrine control: pos pituitary, catecholamine release from medulla, reprodu(cid:272)tio(cid:374): (cid:271)eh"r a(cid:374)d pituitary fu(cid:374)(cid:272)tio(cid:374, water/sodium balance and exchange, body energy balance: nutrient intake, metabolism, emotion, circadian rhythm: beside optic chasm, temp regulation. Hypothalamic nuclei: made of cell clusters (nucleus) each perform specific function, all stru(cid:272)tures (cid:272)o(cid:373)(cid:373)u(cid:374)i(cid:272)ate (cid:862)re(cid:272)ipro(cid:272)al(cid:863) Pituitary gland control: paraventricular/supraoptic produce antidiuretic (vasopressin or oxytocin) Oxytocin for milk and bonding: neural hormonal reflex (pathway not always active only preg-sexual dimoric pathway, pos feed-when oxy release will cause more oxy to release. Stimuli for thirst: increase osmolarity, decrease ecf, decrease bp. Why overeat: genetic predisposed: malfunction in brain responsible for food intake, early life: overweight mother (genetic modification, enviro, bio clocks, physiological signal: mechanism in body tell to stop/eat.