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Questions and Answers
What is the primary function of the cardiovascular system?
What is the name of the node that regulates the heartbeat?
What type of blood vessels carry oxygenated blood away from the heart?
What is the term for the circulation of blood from the body to the lungs to pick up oxygen?
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What is the component of blood that transports oxygen, nutrients, and waste products?
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What system regulates heart rate and blood pressure?
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What type of receptors in blood vessels detect changes in blood pressure and send signals to the brain?
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What is the term for the circulation of blood from the lungs to the rest of the body?
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Study Notes
Overview
The cardiovascular system, also known as the circulatory system, is a complex network of organs and vessels that transport blood throughout the body.
Functions
- Transport oxygen and nutrients from the lungs and digestive system to cells and tissues
- Remove carbon dioxide and waste products from cells and tissues
- Regulate body temperature
- Maintain blood pressure
- Support immune function
Components
Heart
- A muscular organ that pumps blood throughout the body
- Divided into four chambers: left and right atria, left and right ventricles
- The heartbeat is regulated by the sinoatrial (SA) node
Blood Vessels
- Arteries: carry oxygenated blood away from the heart to the rest of the body
- Veins: carry deoxygenated blood back to the heart
- Capillaries: allow for exchange of oxygen and nutrients with cells and tissues
Blood
- A liquid tissue that transports oxygen, nutrients, and waste products
- Composed of plasma, red blood cells, white blood cells, and platelets
- pH and temperature regulation are critical for proper function
Blood Circulation
- Pulmonary circulation: oxygen-depleted blood from the body enters the right atrium, then travels to the lungs to pick up oxygen
- Systemic circulation: oxygen-rich blood from the lungs enters the left atrium, then travels to the rest of the body
- Blood pressure is highest in arteries and lowest in veins
Regulation
- Autonomic nervous system regulates heart rate and blood pressure
- Baroreceptors in blood vessels detect changes in blood pressure and send signals to the brain for adjustment
- Hormones such as epinephrine and norepinephrine also play a role in regulating cardiovascular function
Overview
- The cardiovascular system is a complex network of organs and vessels that transport blood throughout the body.
Functions
- Transports oxygen and nutrients from lungs and digestive system to cells and tissues.
- Removes carbon dioxide and waste products from cells and tissues.
- Regulates body temperature.
- Maintains blood pressure.
- Supports immune function.
Components
Heart
- A muscular organ that pumps blood throughout the body.
- Divided into four chambers: left and right atria, left and right ventricles.
- Heartbeat regulated by the sinoatrial (SA) node.
Blood Vessels
- Arteries carry oxygenated blood away from the heart to the rest of the body.
- Veins carry deoxygenated blood back to the heart.
- Capillaries allow for exchange of oxygen and nutrients with cells and tissues.
Blood
- A liquid tissue that transports oxygen, nutrients, and waste products.
- Composed of plasma, red blood cells, white blood cells, and platelets.
- pH and temperature regulation are critical for proper function.
Blood Circulation
- Pulmonary circulation: oxygen-depleted blood from the body enters the right atrium, then travels to the lungs to pick up oxygen.
- Systemic circulation: oxygen-rich blood from the lungs enters the left atrium, then travels to the rest of the body.
- Blood pressure is highest in arteries and lowest in veins.
Regulation
- Autonomic nervous system regulates heart rate and blood pressure.
- Baroreceptors in blood vessels detect changes in blood pressure and send signals to the brain for adjustment.
- Hormones like epinephrine and norepinephrine also play a role in regulating cardiovascular function.
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Description
Learn about the functions and components of the cardiovascular system, including the heart, blood vessels, and more.
