Cardiac Physiology Flashcards
What is the cardiovascular system?
Heart and blood vessels
Where in the thoracic cavity is the heart located?
Pericardium
What’s the main purpose of the cardiac system?
Transportation of nutrients, water, gases, wastes, and chemical signals to and from all parts of the body.
What carries blood away from the heart?
Arteries
What carries blood back to the heart?
Veins
What is the heart divided into?
2 atria &
2 ventricles
What goes from the right side of the heart to the lungs and back to the heart?
Pulmonary Circulation
What goes from the left side of the heart to the tissues and back to the heart?
Systemic Circulation
Blood flows down a pressure gradient, from the highest pressure in the __1__ and arteries to the lowest pressure in the ___2___ and pulmonary veins.
- Aorta
2. Venae Cavae
3 functions of the cardiovascular system
- Pulmonary and Systemic circulation transports blood through the body
- Artery- away from heart
vein- towards heart - Atria receives the blood, ventricles send the blood.
What’s the order in which blood passes through the heart?
Lft vent, systemic v., pulmonary circu., systemic arter., aorta, right vent.
- Left Ventricle
- Aorta
- Systemic Arteries
- Systemic Veins
- Right Ventricles
- Pulmonary Circulation
- Left Ventricle
Tough membranous sac that encases the heart
Pericardium
Valve b/w ventricle and a main artery
Semilunar Valve
A vessel that carries blood away from the heart
Artery
Lower chamber of the heart
Ventricle
Valve b/w the left atrium and left ventricle
Bicuspid valve
Primary artery of the systemic circulation
Aorta
Muscular layer of the heart
Myocardium
Narrow end of the heart; points downward
Apex
Valve with papillary muscles
AV Valve
The upper chambers of the heart
Atria
Number of heart contractions per minute
Heart Rate
Volume of blood in the ventricles before the heart contracts
end-diastolic volume
Volume of blood that enters the aorta w/ each contraction
Stroke volume
