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Science > The Circulatory System > Flashcards

The Circulatory System Flashcards

1
Q

What is tissue

A

A tissue is a group of cells with a similar structure and function.

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2
Q

What are the three types of blood cells

A

red blood cells, white blood cells, platelets

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3
Q

What are the functions of blood?

A

To transport oxygen to the cells, to transport food to the cells, transport waste materials away from cells, to help fight infection, to help keep the body at the correct temperature.

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4
Q

Why is blood a type of tissue

A

Blood is a type of tissue because it is made up of similar cells that work together

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5
Q

what are the functions of each blood cell

A

Red blood cell: to carry oxygen to the body cells
White blood cells: Fight infection
Platelets: Clot blood when blood vessels are damaged

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6
Q

Why do we need a circulatory system?

A

Cells in our body need food and oxygen in order to get energy.
Cells need to dispose of waste (e.g. carbon dioxide and water)
The system picks up nutrients from the digestive system and delivers them to the cells.
It delivers oxygen from the lungs to the cells in the body.
It picks up waste from the cells and carries it in the blood to the lungs and kidneys to be expelled from the body.

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7
Q

What is the circulatory system?

A

It is a system of organs that allows blood to transport substances to the cells of the body. It also transports wastes away from the cells

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8
Q

What is plasma and what is it made up of?

A

It is made up of mostly water and proteins. It Is the liquid part of blood. Blood cells are carried along in this liquid

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9
Q

What gives red blood cells their colour

A

Haemoglobin

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10
Q

What happens when oxygen enters the blood

A

It attaches to the haemoglobin and then gets released into the cells

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11
Q

What do white blood cells do to foreign organisms that enter the body

A

They surround the foreign organism and then engulfs the organism into itself and digests it.

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12
Q

What do platelets do

A

They help to clot blood wherever a blood vessel gets damaged.

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13
Q

Where are most of the blood cells made?

A

In the bone marrow (in adults it is in the long bones of the body along with the ribs and vertebrae that make blood). IN children all the bones make blood.

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14
Q

Why are blood cells constantly being made and replaced

A

because the blood cells get worn and die

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15
Q

What do blood vessels do?

A

They carry the blood around the body

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16
Q

What are all of the types of blood vessels?

A

Arteries, Veins, Capillaries

17
Q

Difference between the three types of blood vessels

A

Arteries are usually found deeper in the body than veins and have thick walls that are very strong.
Veins have thinner walls and are easier than arteries to damage.
Capillaries have walls that are only one cell thick.

18
Q

What do arteries always do?

A

They always carry blood away from the heart (A for artery, A for away)

19
Q

What do veins always do and what is the risk with it?

A

Veins always carry blood towards the heart. Since it is not under pressure from the hearts beating action it can potentially flow backward. This is prevented with valves in the veins to prevent backflow.

20
Q

What do capillaries do?

A

They are extremely narrow as they need to weave in through organs in the body to deliver substances to the cells and to take away waste matter.

21
Q

What will blood not do in arteries and why?

A

It will not flow backwards as the blood is under pressure from the hearts beating/pumping action.

22
Q

What is the heart? What is its function?

A

The heart is an organ made of a unique type of muscle known as cardiac muscle. This muscle never tires. Its function is to pump oxygenated blood all around the body. It also sends deoxygenated blood to the lungs to remove the carbon dioxide and collect oxygen.

23
Q

What does cardiac mean?

A

Cardiac means something to do with the heart

24
Q

What is the meaning of the circulatory system?

A

It means all the vessels through which the blood flows around the body.

25
Q

Name all of the left sides of the heart (the top and bottom left chambers when drawing) (actual right side of the heart)

A

Pulmonary artery, Vena cava, Right atrium, valve, right ventricle, septum

26
Q

Name all of the right sides of the heart (the top and bottom right chambers when drawing) (actual left side of the heart)

A

Aorta, pulmonary vein, left atrium, valve, left ventricle

27
Q

What is the name of the arteries that bring nutrients and oxygen to the heart?

A

Coronary Arteries bring oxygen and nutrients to the heart

28
Q

Why does exercise increase heart rate?

A

Exercise requires energy
We get energy from respiration
Respiration needs oxygen
The more exercise is done, the more energy needed ,. Therefore, a greater rate of respiration needs more oxygen to the cells.
Blood needs to deliver oxygen to the cells faster in order to deliver enough oxygen for the increased level of respiration.

29
Q

Whats lows down your heart rate

A

Sleep causes the rate of respiration in cells to decrease.

30
Q

What are arteries?

A

Arteries are the blood vessels that carry the blood away from the heart and carry it towards the organs of the body.

31
Q

What are veins?

A

Veins are the blood vessels that carry blood away from the organs of the body and deliver it back to the heart.

32
Q

What do capillaries do when they come away from an organ?

A

When capillaries coming away from an organ join back together again, they join up as a vein.

33
Q

How does the circulatory system interact with other systems?

A

It delivers food and oxygen to all the organs of all the systems.
Waste is removed from the organs by the circulatory system.
The stomach and small intestine have a greater number of blood vessels associated with them because food needs to be absorbed from these organs.

Science (36 decks)

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