Kinesiology 2222A/B Lecture Notes - Lecture 22: Inferior Vena Cava, Superior Vena Cava, Chordae Tendineae

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2222A/B
• Professor: Jamie Melling

Document Summary

3 circulatory circuits: pulmonary circuit, coronary circuit, systemic circuit. To and from lungs, pressure from right side of heart. Gas exchange: blood will pick up o2 and release co2. Pulmonary blood pressure = 15 ml of mercury (much lower than systemic = 90 ml of mercury) Systemic circuit 90 ml of mercury bp = 120/80. Blood to and from the entire body from the left side of the heart. Supplies all tissues with o2 and nutrients and returns co2. The systemic blood pressure generator. i. e. 120 from the expression 120/80 mmhg comes from. Coronary circuit (will discuss it later) (cid:449)he(cid:374) this syste(cid:373) fails, heart (cid:449)o(cid:374)"t fu(cid:374)(cid:272)tion. Hearts stores fat and uses fat as energy. All parts ensure hearts makes enough force to work. If it just s(cid:395)ueezed, all it (cid:449)ould (cid:374)eed is (cid:373)us(cid:272)le, (cid:271)ut the hea(cid:396)t does(cid:374)"t just do this. Thick walls and takes blood to systemic circuit. Aorta branches so blood goes to all parts of body.