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The circulatory system is a complex network that ensures blood flow throughout the body. It plays a crucial role in delivering oxygen and nutrients to cells while removing waste products.
Key points:
10/30/2022
17
The oxygenated blood journey from heart to body involves various types of blood vessels, each with specific characteristics and functions.
Arteries are thick-walled vessels that carry blood away from the heart. They have strong walls to withstand the high pressure of blood being pumped from the heart.
Definition: Arteries - Blood vessels that carry oxygenated blood away from the heart to the body's tissues.
Veins, on the other hand, carry blood back to the heart. They have thinner walls and contain valves to prevent blood from flowing backwards.
Vocabulary: Valves - Structures in veins that ensure blood flows only towards the heart.
Capillaries are the smallest blood vessels, with very thin walls that allow for the exchange of oxygen, nutrients, and waste products between the blood and body tissues.
Highlight: Capillaries are where the actual exchange of gases and nutrients occurs between blood and body cells.
The circulatory system ensures that oxygenated blood reaches all parts of the body, while deoxygenated blood is efficiently returned to the heart and lungs for reoxygenation. This continuous cycle is essential for maintaining the body's functions and overall health.
Quote: "Arteries - Thick walls to stop from bursting. AWAY from heart. Veins - valves to stop blood going backwards."
The heart is the central organ of the circulatory system blood flow. It consists of four chambers: two atria and two ventricles, separated by valves that ensure unidirectional blood flow.
Vocabulary: Atrium - The upper chambers of the heart that receive blood. Vocabulary: Ventricle - The lower chambers of the heart that pump blood out.
The process of deoxygenated blood to lungs begins when deoxygenated blood from the body enters the right atrium through the vena cava. The right atrium contracts, opening the tricuspid valve and pushing blood into the right ventricle. From there, the right ventricle forces the blood through the pulmonary artery to the lungs for oxygenation.
Highlight: The right side of the heart handles deoxygenated blood, while the left side manages oxygenated blood.
After oxygenation in the lungs, the blood returns to the left atrium via the pulmonary vein. The left atrium then contracts, opening the mitral valve and allowing blood to flow into the left ventricle. Finally, the left ventricle contracts powerfully, pushing the oxygenated blood into the aorta and to the rest of the body.
Example: Think of the heart as a double pump - one side pumping to the lungs, the other to the body.
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M A C E Y
@macey_jkfm
·
3 Followers
Follow
The circulatory system is a complex network that ensures blood flow throughout the body. It plays a crucial role in delivering oxygen and nutrients to cells while removing waste products.
Key points:
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By signing up you accept Terms of Service and Privacy Policy
The oxygenated blood journey from heart to body involves various types of blood vessels, each with specific characteristics and functions.
Arteries are thick-walled vessels that carry blood away from the heart. They have strong walls to withstand the high pressure of blood being pumped from the heart.
Definition: Arteries - Blood vessels that carry oxygenated blood away from the heart to the body's tissues.
Veins, on the other hand, carry blood back to the heart. They have thinner walls and contain valves to prevent blood from flowing backwards.
Vocabulary: Valves - Structures in veins that ensure blood flows only towards the heart.
Capillaries are the smallest blood vessels, with very thin walls that allow for the exchange of oxygen, nutrients, and waste products between the blood and body tissues.
Highlight: Capillaries are where the actual exchange of gases and nutrients occurs between blood and body cells.
The circulatory system ensures that oxygenated blood reaches all parts of the body, while deoxygenated blood is efficiently returned to the heart and lungs for reoxygenation. This continuous cycle is essential for maintaining the body's functions and overall health.
Quote: "Arteries - Thick walls to stop from bursting. AWAY from heart. Veins - valves to stop blood going backwards."
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The heart is the central organ of the circulatory system blood flow. It consists of four chambers: two atria and two ventricles, separated by valves that ensure unidirectional blood flow.
Vocabulary: Atrium - The upper chambers of the heart that receive blood. Vocabulary: Ventricle - The lower chambers of the heart that pump blood out.
The process of deoxygenated blood to lungs begins when deoxygenated blood from the body enters the right atrium through the vena cava. The right atrium contracts, opening the tricuspid valve and pushing blood into the right ventricle. From there, the right ventricle forces the blood through the pulmonary artery to the lungs for oxygenation.
Highlight: The right side of the heart handles deoxygenated blood, while the left side manages oxygenated blood.
After oxygenation in the lungs, the blood returns to the left atrium via the pulmonary vein. The left atrium then contracts, opening the mitral valve and allowing blood to flow into the left ventricle. Finally, the left ventricle contracts powerfully, pushing the oxygenated blood into the aorta and to the rest of the body.
Example: Think of the heart as a double pump - one side pumping to the lungs, the other to the body.
Biology - Cell Energy Notes
diagram and explanation of Cell Energy. Photosynthesis/ Cellular Respiration process and comparison. Explains Fermentation
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Average App Rating
Students use Knowunity
In Education App Charts in 12 Countries
Students uploaded study notes
iOS User
Stefan S, iOS User
SuSSan, iOS User
