Blood Circulation Process

Study Notes

Blood Circulation

Overview of Blood Circulation

The heart plays a crucial role in blood circulation, pumping blood throughout the body
The circulation process involves the movement of oxygenated blood from the heart to the body's tissues and the return of deoxygenated blood back to the heart

Pathway of Blood Circulation

Deoxygenated Blood Returns to the Heart
- Deoxygenated blood returns to the heart through the superior and inferior vena cavae
- Blood enters the right atrium, then flows into the right ventricle
Blood Pumped to Lungs
- The right ventricle pumps blood through the pulmonary artery to the lungs
- In the lungs, blood picks up oxygen and releases carbon dioxide
Oxygenated Blood Returns to the Heart
- Oxygen-rich blood returns to the heart through the pulmonary veins
- Blood enters the left atrium, then flows into the left ventricle
Blood Pumped to Body
- The left ventricle pumps blood through the aorta to the rest of the body
- Oxygen and nutrients are delivered to tissues, and carbon dioxide and waste are removed

Regulation of Blood Circulation

The heart rate and blood pressure are regulated by the autonomic nervous system
The sympathetic nervous system increases heart rate and blood pressure in response to stress or exercise
The parasympathetic nervous system decreases heart rate and blood pressure in response to relaxation or rest

Description

Learn about the pathway of blood circulation, including the role of the heart, lungs, and blood vessels in delivering oxygen and nutrients to the body's tissues. Understand how the autonomic nervous system regulates heart rate and blood pressure.