Anatomy and Cell Biology 3319 Study Guide - Midterm Guide: Atherosclerosis

49 views16 pages

Document Summary

When blood pushed out of great vessels, semilunar valves close to best hear heart sounds ostalcation hearing heart sounds second intercostal space: manubriosternal angle, left hand side of sternum pulmonary valve aortic valve right of sternum. Av valves: mitral/bicuspid apex of heart (5th intercostal space, tricuspid valve right side of sternum valves have to close very tightly aortic valve, 3 cusps, normally tightly close together, form little cups that can fill with blood on each side, functioning from fetal stage till death wear and tear can accumulate lipid and fibrous tissue become less flexible. Av node bundle of specialized cells that depolarize easily send out fibers throughout both atria that makes them contract simultaneously stimulated as atria contract sends signal through ventricular walls (bundle of his) ending in purkinje fibers rapidly transmit to all parts of ventricle begins contraction at apex moving toward the base cardiac muscle cells can beat on their own but rate is controlled by outside forces.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers

Related Documents