Circulatory System Overview

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Questions and Answers

What is the main organ of the circulatory system?

The heart.

Name the three types of blood vessels.

Arteries, veins, and capillaries.

What is the function of red blood cells?

To carry oxygen from the lungs to the body and carbon dioxide back to the lungs.

What is the largest artery in the human body?

<p>Aorta.</p> Signup and view all the answers

What type of blood do veins typically carry?

<p>Deoxygenated blood (except for the pulmonary veins, which carry oxygenated blood).</p> Signup and view all the answers

What is the liquid component of blood called?

<p>Plasma.</p> Signup and view all the answers

What structure prevents the backflow of blood in the heart?

<p>Valves.</p> Signup and view all the answers

What is the normal blood pressure range for an adult?

<p>Approximately 120/80 mmHg.</p> Signup and view all the answers

What is the function of platelets?

<p>To help in blood clotting and wound repair.</p> Signup and view all the answers

What is the name of the circuit that carries blood between the heart and lungs?

<p>Pulmonary circulation.</p> Signup and view all the answers

Flashcards

What is the main organ of the circulatory system?

The heart is the organ responsible for pumping blood throughout the body.

What are the three types of blood vessels?

Arteries carry oxygenated blood away from the heart, veins carry deoxygenated blood back to the heart, and capillaries connect the two.

What is the function of red blood cells?

Red blood cells contain hemoglobin, which binds to oxygen and transports it throughout the body.

What is the largest artery in the human body?

The aorta is the largest and main artery in the body, distributing blood to vital organs.

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What type of blood do veins typically carry?

Veins typically carry deoxygenated blood back to the heart, except for the pulmonary veins which carry oxygenated blood from the lungs to the heart.

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What is the liquid component of blood called?

Plasma is the fluid component of blood, consisting of water, proteins, and other substances.

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What structure prevents the backflow of blood in the heart?

Valves prevent the backflow of blood and ensure unidirectional blood flow through the heart.

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What is the normal blood pressure range for an adult?

Normal blood pressure is measured as 120/80 mmHg, where the top number represents systolic pressure and the bottom represents diastolic pressure.

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What is the function of platelets?

Platelets are small cell fragments that play a crucial role in blood clotting and wound healing.

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What is the name of the circuit that carries blood between the heart and lungs?

Pulmonary circulation refers to the blood flow between the heart and lungs, where blood is oxygenated.

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Study Notes

Circulatory System

  • Main organ: The heart
  • Blood vessel types: Arteries, veins, and capillaries
  • Red blood cell function: Carry oxygen from lungs to body and carbon dioxide back to lungs
  • Largest artery: Aorta
  • Vein function (typically): Carry deoxygenated blood, except for pulmonary veins which carry oxygenated blood
  • Liquid component of blood: Plasma
  • Structure preventing backflow in heart: Valves
  • Normal blood pressure range (adult): Approximately 120/80 mmHg
  • Platelet function: Blood clotting and wound repair
  • Blood circuit between heart and lungs: Pulmonary circulation

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