CARDIOVASCULAR SYSTEM Presented By: Philomen Prem MBA Pharma# 10 Under the Guidance: Sippy Sir CARDIOVASCULAR SYSTEM Presented By: Philomen Prem MBA Pharma # 10
May 21, 2015
CARDIOVASCULAR SYSTEM
Presented By:Philomen PremMBA Pharma# 10
Under the Guidance: Sippy Sir
CARDIOVASCULAR SYSTEM
Presented By: Philomen PremMBA Pharma # 10
What is Cardiovascular System..??
Parts of cardiovascular system ?
3
Functions of the Heart
• Generates blood pressure• Routes blood– Heart separates pulmonary and
systemic circulation• Ensures one-way blood flow– Heart valves ensure one-way flow
Functions of the Heart
• Regulates blood supply– Changes in contraction rate and force match
blood delivery to changing metabolic needs– Most healthy people can increase cardiac
output by 300–500%
Chambers of the heart
Blood Circulation Deoxygenated blood returns to
the heart via the superior and inferior vena cava, enters the right atrium, passes into the right ventricle, and from here it is ejected to the pulmonary artery.
Oxygenated blood returning from the lungs enters the left atrium via the pulmonary veins, passes into the left ventricle, and is then ejected to the aorta.
Serous membrane
Continuous withblood vessels
Coordination of chamber contraction, relaxation
The Heart: Cardiac Output
· Cardiac output (CO)· Amount of blood pumped by each side of the
heart in one minute· CO = (heart rate [HR]) x (stroke volume [SV])
· Stroke volume· Volume of blood pumped by each ventricle in
one contraction
Conduction system of the heart
Heart contracts as a unit
Atrial and ventricular syncytia help conductelectrical signals through the heart
Sinoatrial (S-A) node is continuous with atrialsyncytium
S-A node cells can initiate impulses on theirown; activity is rhythmic