Circulatory System Flashcards

Questions and Answers

What are the basic needs of all living cells?

water, food, gases, and waste disposal.

What four resources do cells need to stay alive?

water, food, gases, and waste disposal.

Give an example of a multicellular organism.

A human being.

How do the cells in multicellular organisms get the resources they need to stay alive?

Blood delivers food & gases to the cells. Signup and view all the answers

What is the main function of the left side of the human heart?

To pump blood around the body. Signup and view all the answers

What is the function of the red blood cells?

Carry oxygen around the body and carry back carbon dioxide. Signup and view all the answers

What is the main function of the right side of the human heart?

To send blood with carbon dioxide back to the lungs. Signup and view all the answers

What are the main kinds of blood vessels and what functions do they perform?

Arteries, veins, and capillaries; arteries carry blood away, veins carry blood back. Signup and view all the answers

Describe what happens when blood flows through the lungs.

It releases carbon dioxide and picks up oxygen. Signup and view all the answers

Describe what happens when blood in capillaries flows past cells.

The capillaries deliver oxygen and pick up carbon dioxide. Signup and view all the answers

How is blood kept flowing in your body?

The heart pumps blood round the body. Signup and view all the answers

What function do arteries perform?

Carry blood away from the heart. Signup and view all the answers

What are the two most important resources transported to cells?

Oxygen and sugar. Signup and view all the answers

What is the most important waste product removed from cells?

Carbon dioxide. Signup and view all the answers

Where does our oxygen come from?

It comes from the air we breathe. Signup and view all the answers

Where does our sugar come from?

The sugar comes from the food we eat. Signup and view all the answers

What do red blood cells do?

They carry oxygen to the cells and carbon dioxide away from the cells. Signup and view all the answers

How many red blood cells are in your beautiful body?

There are 25 trillion red blood cells. Signup and view all the answers

What organ takes in oxygen?

The lungs. Signup and view all the answers

Where do the lungs send oxygen?

They send oxygen to the left side of the heart. Signup and view all the answers

What are the three main parts of the circulatory system?

The blood, the blood vessels, and the heart. Signup and view all the answers

What are the four parts of blood?

White blood cells, red blood cells, platelets, and plasma. Signup and view all the answers

What is the function of white blood cells?

They attack and eat germs that sneak into your body. Signup and view all the answers

What is the function of red blood cells?

They carry the oxygen you need all over your body. Signup and view all the answers

What is the function of platelets?

They help your blood stop bleeding when you get a cut by making a clot. Signup and view all the answers

What is the function of plasma?

It carries digested food all over the body. Signup and view all the answers

What do the white blood cells look like?

They are the biggest cells with dark spots inside. Signup and view all the answers

What do the red blood cells look like?

They are shaped like donuts with holes partly filled in. Signup and view all the answers

What do the platelets look like?

They are the smallest of the blood cells. Signup and view all the answers

Study Notes

Basic Needs of Cells

Living cells require water, food, gases, and waste disposal to survive.

Multicellular Organisms

Humans are an example of multicellular organisms.

Resource Delivery

Blood is responsible for delivering food and oxygen to cells in multicellular organisms.

Heart Functions

The left side of the heart pumps oxygenated blood throughout the body.
The right side of the heart sends carbon dioxide-rich blood to the lungs for oxygenation.

Blood Cells Functions

Red blood cells transport oxygen and remove carbon dioxide.
White blood cells combat infections by attacking germs.
Platelets help form clots to stop bleeding, turning into scabs when necessary.

Blood Vessel Types

Arteries carry blood away from the heart.
Veins return blood to the heart.
Capillaries facilitate the exchange of oxygen and carbon dioxide with body cells.

Blood Flow in the Lungs

Blood releases carbon dioxide and absorbs oxygen while flowing through the lungs.

Capillary Exchange

As blood travels through capillaries, it delivers oxygen and collects carbon dioxide from cells.

Blood Composition

Blood consists of red blood cells, white blood cells, platelets, and plasma.

Oxygen and Sugar Sources

Oxygen is obtained from the air we breathe.
Sugar comes from the food that we eat.

Cellular Waste

Carbon dioxide is the primary waste product that cells need to eliminate.

The Lungs' Role

Lungs ingest oxygen and supply it to the left side of the heart.

Circulatory System Components

The circulatory system comprises blood, blood vessels, and the heart.

Appearance of Blood Cells

White blood cells are the largest with dark spots.
Red blood cells have a donut-like shape with a central indentation.
Platelets are the smallest type of blood cell.
Plasma is a yellowish liquid that transports digested food throughout the body.

Red Blood Cell Count

There are approximately 25 trillion red blood cells in the human body.

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Description

Test your knowledge on the circulatory system with these flashcards. Learn about the basic needs of living cells and examples of multicellular organisms. Perfect for students looking to reinforce their understanding of biology concepts.