01:119:116 Lecture Notes - Lecture 25: Hemolymph, Body Cavity, Diploblasty

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:116
• Professor: Biel

Document Summary

Lecture 25 - circulation: basics of circulatory systems, types of circulatory systems. Some animals do not have a circulatory system. Arteries -> arterioles -> capillaries -> tissues -> venules -> veins. Ventricles - pump the arteries: comparison of vertebrate circulatory system. Fish - low metabolic rate, slow system. Two chambered heart - 1 atrium and 1 ventrcile. Heart -> gills -> body -> heart. Amphibians - low metabolic rate, slow system. Three chambered heart - 2 atria and 1 ventricle. Plumo-cutaneous circuit - o2 picked up from skin. Systemic circuit - to body and returns to the right atrium. Double circulation - move vigorous blood flow. Four chambered heart - 2 atria and 2 ventricles. Systemic and pulmonary - circuits completely separate: human heart, heart structure. Cardiac output - blood pumped/min by left ventricle. Stroke volume - the amount of blood pumped in single contraction. Murmur - lub-shh - backflow into ventricles.