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GCSE PE 1 > Heart > Flashcards

Heart Flashcards

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1
Q

What is 3 main functions of the CV system?

A

transport of oxygen, carbon dioxide and nutrients.

clotting of open wounds.

regulation of body temperature.

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2
Q

What is vascular shunting vasodilation?

A

Blood flows to active areas and diverts away from inactive areas

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3
Q

What does cardio and vascular mean

A

The cardiovascular system is formed by our heart and blood vessels. Cardio means the heart and vascular mean blood vessels.

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4
Q

What are the three main functions of the cv system

A

Transport oxygen around the body
Regulate the body temputure
Clotting of wounds

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5
Q

how does it Help clot blood

A

Blood contains platelets which help clots our blood and form scabs which help stop bleeding and healing. In some sports small cuts are common and so this is important

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6
Q

White blood cells and platlets

A

White blood cells stop infections and platlets help stop the bleeding

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7
Q

It controls the body temputure

A

If you get too hot the blood vessels close the the skin get bigger(vasodilation). Blood is diverted to the surface to allow more heat to radiate out

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8
Q

Vasoconstriction

A

If you become too cold your vessels get smaller to avoid heat being lost

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9
Q

Cardiovascular fitness

A

The ability to exercise the whole body for long periods of time

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10
Q

Vacular shunting

A

Increases blood flow to active areas during exercise by diverting blood away from inactive areas. Achieved by vasodilation and vasconstriction

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11
Q

Cardio-respiratory system

A

The interaction of the heart and lungs to supply oxygen to muscles during exercise

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12
Q

Vasodilation

A

When beins swell up or dialate, widening of the internal diametre, increased blood flow

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13
Q

Arteries

A

Arteries take blood away from the heart,have thick walls,elastic veins,carry oxygenated blood

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14
Q

Pulmonary artery

A

different from other arteries as it carries deoxygenated blood from the heart to the lunds

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15
Q

Veins

A

Carry blood into the heart

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16
Q

Plmonary vein

A

Carries oxygenated blood from the lungs back to the heart

17
Q

Capillaries

A

Microscopic vessels(1 thick cell),carty oxygenated blood which transfer oxygenen,nutrients to themjscles

18
Q

The first phase of the lub dub

A

Systolic phase

19
Q

The second phase of the lub dub

A

Diastolic phase

20
Q

Styoloc phase

A

Blood is pumped from both atria into the ventricles(lub)
Then both the ventricles contract(dub)

21
Q

Diastolic phase

A

This is when the heart is relaxing and refilling the atria with blood.

22
Q

Blood pressure

A

A measure of force that your hearts uses to pump the blood around your body

23
Q

Whats the importance of red blood cells

A

Red blood cells transport oxygen from the lungs the bodys cells, and carbon dioxide from the cells to the lungs

24
Q

What do they contain

A

Haemoglobin which stores oxygen and carbon dioxide

25
Q

The importance of white blood cells

A

Contain transparent cell
Defend the bodys system
Pproduce antibodies to fight against infection and disease

26
Q

The importance of platelets

A

Formed in the bone narrow
Fragments clump together to help clot the blood

27
Q

The importance of plasma

A

The main role is to take nutrients,hormones, and proteins to the parts of the body that need it

28
Q

Immune system

A

The structure and processes in your body that stop disease

29
Q

Thrombokinase

A

Substance involved in blood clotting

30
Q

Serotonin

A

Hormone that triggers the clotting process

31
Q

Erythocyte

A

Red blood cells

32
Q

Anaemia

A

A condition where is a lack of red cells

33
Q

Leukocyte

A

White blood cells

34
Q

Pathogen

A

An agent that causes disease,such as a virus

35
Q

Antibody

A

Chemical that destroys a pathogen

GCSE PE 1 (19 decks)

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