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Hs1023 > Cardiovascular System > Flashcards

Cardiovascular System Flashcards

1
Q

What are the components of the cardiovascular system?

What do they do?

A

Blood- transports medium

Heart- pumps

Blood vessels- carry blood

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2
Q

What is the circulation of the blood?

A

Right atrium

Right ventricle

Lungs

Left atrium

Left ventricular

Systemic circulation

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3
Q

What is the sac the heart is in?

A

Pericardial sac

Enables the heart to move but stay together

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4
Q

Myocardium properties

A

Contains three layers

Around the lower part of the heart

Twisting to contract the heart

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5
Q

What is systemic circulation?

A

Anywhere which the blood goes apart from the heart and lungs

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6
Q

What happened in systemic circulation

A

Oxygen leaves the blood and goes to the cells

Carbon dioxide and wast product leaves the cells into the blood

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7
Q

What is pulmonary circulation

A

Blood flows into the lungs from the heart

Gets oxygen

Goes back to the heart

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8
Q

What % of blood is where in your body

A

70% systemic circulation
55% systemic veins
5% systemic capillaries
10% systemic arteries

12% heart

18% pulmonary circulation

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9
Q

What direction do arteries and veins travel?

A

Arteries travel away from the heart

Vines travel towards the heart

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10
Q

Property’s of the arteries?

A

Big walls

Lumen (space for blood flow is smaller)

Lumen full of blood

Moves forward due to more pressure

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11
Q

Property’s of a vain?

A

Small wall

Lumen much bigger

Lumen 2/3 empty

Have valves to keep flow one way (venous return)

Low pressure

Muscle pump (squashing the villains closed) and the respiratory pump (sucking blood to the heart)

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12
Q

What does arterioles do?

A

Flexible

Opening and closing to give the tissues blood.

Moving around the body.

Giving it to different parts for only a few seconds

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13
Q

What are the two types of veins

A

Superior vain ( above the heart )

Inferior vain ( below the heart )

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14
Q

Control of blood pressure

A

It can varies during the day

If too low (hypotension) lack of oxygen

If too high (hypertension) cause low term damage

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15
Q

What’s the coronary blood supply?

A

The hearts own blood flow.

Starts at the aorta.

Right and left coronary artery

Anterior inter-ventricular artery

Circumflex artery

Marginal artery

Posterior interventricular artery

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15
Q

Cardiac output

A

The amount of blood pumped out by each ventricle in one minute

Is the product of heart rate and stroke

15
Q

Systole is

A

Heart contraction

15
Q

Diastole

A

Heart relaxation

Hs1023 (16 decks)

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