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