February 18 - Blood is pumped from left ventricle to body o...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
February 18 Ch. 41-animal form and function and tissue types and ch.44-up to today Open Circulatory System: usually sedentary (sessile), ex. Clams Closed Circulatory System: can be more energetic, predatory lifestyle Fish: 2-chambered heart Mammals; 4-chambered heart, 2 circuit system o Pulmonary circuit= Right side of heart Blood returns to heart from body, enters right atrium Blood enters right ventricle Blood is pumped from right ventricle to lungs o Systemic circuit: Left side of heart Blood returns to left atrium from lungs Blood enters left ventricle
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Blood is pumped from left ventricle to body o Sinoatrial node in right atrium (contraction begins here) goes to AV Node in right atrium goes to bundles in walls of ventricles Veins and arteries differ in structure o Artery: has thicker fibrous tissue and muscle tissue o Arterials: smaller versions of arteries o Capillaries: action occurs here, gas-nutrient exchange Ch 41: 803-816 Connective tissue: Loose: serves as packing material between organs or under skin Ch 41: 816-820 Ch 44: 861-874 Ch 44: 874-883...
View Full Document

This note was uploaded on 02/25/2011 for the course BIO 101 taught by Professor Pytel during the Winter '11 term at Union College.

Ask a homework question - tutors are online