The Heart and Blood Vessels (blood pressure) Flashcards Preview

Biology: The Heart + Human Nutrition + Cell Structure > The Heart and Blood Vessels (blood pressure) > Flashcards

Flashcards in The Heart and Blood Vessels (blood pressure) Deck (20)
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1
Q

What is blood pressure?

A

Blood pressure is the force exerted by the blood against the walls of the blood vessels (mainly arteries)

2
Q

What is the force exerted by the blood against the walls of the blood vessels (mainly arteries) called?

A

Blood pressure

3
Q

What type of pressure is the blood entering the aorta under?

A

It is under high pressure

4
Q

Why is the blood entering the aorta under high pressure?

A

It is due to the contraction of the left ventricle

5
Q

Where does the blood pass through from the aorta as it is gradually loses blood pressure?

A

Aorta to the arteries, arterioles, capillaries, venules, veins and back to the right atrium of the heart

6
Q

What happens to the pressure of the blood as it passes from the aorta to the arteries, arterioles, capillaries, venules, veins and back to the right atrium of the heart?

A

The blood pressure falls

7
Q

When recording blood pressure, what are medical professionals actually recording?

A

They are recording the pressure required to stop the flow of blood in the major artery in the upper arm

8
Q

What are the two values that blood pressure are given in?

A

Systolic pressure

Diastolic pressure

9
Q

Which of the two blood pressure readings is the higher value?

A

It is the systolic pressure

10
Q

What is systolic pressure

A

The pressure of blood as a pulse as it passes through the artery (i.e. when the ventricles contract)

11
Q

What is diastolic pressure?

A

This records the pressure when there is no pulse when the ventricles are not contracting

12
Q

What is the typical blood pressure for a young adult?

A

It is about 120/80 mm of mercury/mm Hg

13
Q

What is the unit used to record blood pressure?

A

mm of mercury or mm Hg

14
Q

What are mm of mercury and mm Hg the units of measurement of?

A

Blood pressure

15
Q

Does blood pressure values rise or fall with age?

A

They rise

16
Q

When the diastolic pressure is over what point is a person said to suffer from high blood pressure?

A

95

17
Q

When a person’s diastolic pressure is over 95, what is a person said to suffer from?

A

High blood pressure

18
Q

What is high blood pressure also called?

A

hypertension

19
Q

What is hypertension commonly called?

A

High blood pressure

20
Q

What is high blood pressure often caused by?

A

Blockages in arterioles and small arteries

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