Cardiovascular System Flashcards

1
Q

What are the 3 types of blood vessel?

A

Arteries, veins and capillaries.

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2
Q

What do veins do?

A

Carry waste products away from tissues. Collect deoxygenated blood from tissues and organs to carry it back to the heart.

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3
Q

What do arteries do?

A

Carry blood away from heart - oxygen, nutrients & hormones to tissues and remove waste products.

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4
Q

What do capillaries do?

A

Allow exchange of substances between blood and cells, providing blood to body systems and organs. Connect arteries and veins. Remove waste.

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5
Q

What is the primary function of the cardiovascular system?

A

To transport nutrients, gases, hormones, and waste products throughout the body.

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6
Q

True or False: The heart has four chambers.

A

True

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7
Q

Fill in the blank: The two upper chambers of the heart are called the _____ and the _____ .

A

atria; ventricles

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8
Q

What are the names of the two main types of blood vessels?

A

Arteries and veins.

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9
Q

What is the role of arteries in the cardiovascular system?

A

To carry oxygenated blood away from the heart to the body.

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10
Q

Which blood vessel carries deoxygenated blood back to the heart?

A

Veins.

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11
Q

What is the function of capillaries?

A

To facilitate the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.

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12
Q

What is cardiac output?

A

The amount of blood the heart pumps in one minute.

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13
Q

Multiple choice: Which part of the heart is responsible for pumping blood to the lungs?

A

Right ventricle.

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14
Q

What is the name of the valve located between the left atrium and left ventricle?

A

Mitral valve.

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15
Q

True or False: The pulmonary circulation carries blood to the rest of the body.

A

False

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16
Q

Fill in the blank: The _____ node initiates the electrical impulses that stimulate heartbeats.

A

sinoatrial (SA)

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17
Q

What is hypertension?

A

High blood pressure.

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18
Q

Multiple choice: Which component of blood is primarily responsible for clotting?

A

Platelets.

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19
Q

What is the average resting heart rate for adults?

A

60 to 100 beats per minute.

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20
Q

True or False: Atherosclerosis is the hardening of the arteries due to plaque buildup.

A

True

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21
Q

What is the main function of red blood cells?

A

To transport oxygen from the lungs to the body and carbon dioxide from the body back to the lungs.

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22
Q

Fill in the blank: The _____ system works closely with the cardiovascular system to regulate body temperature.

A

thermoregulatory

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23
Q

What does ECG stand for?

A

Electrocardiogram.

24
Q

Multiple choice: Which layer of the heart is responsible for its contraction?

A

Myocardium.

25
Q

What are the two circuits of the cardiovascular system?

A

Systemic and pulmonary circulation.

26
Q

True or False: The systemic circulation carries oxygen-poor blood.

A

False

27
Q

What is the purpose of the valves in the heart?

A

To ensure unidirectional blood flow.

28
Q

Fill in the blank: The _____ artery supplies blood to the brain.

A

carotid

29
Q

What is stroke volume?

A

The amount of blood pumped by the heart with each beat.

30
Q

Multiple choice: Which condition is characterized by chest pain due to reduced blood flow to the heart?

A

Angina.

31
Q

True or False: The left ventricle has thicker walls than the right ventricle.

A

True

32
Q

What are the three layers of the heart?

A

Endocardium, myocardium, pericardium.

33
Q

What is blood pressure?

A

BP is a measure of the force that your heart uses to pump blood around the body.

34
Q

What are the components of blood?

A

Erythrocytes, leukocytes, plasma & platelets/thrombocytes.

35
Q

Pituitary pregnancy adaptations

A
  • produces prolactin for lactation
  • increases in size due to oestrogen
  • causes hyperpigmentation of the skin
  • oxytocin increases from
36
Q

Negative feedback loop

A
  1. Conditions in the body change from set point.
  2. Change is detected.
  3. Corrective mechanisms are achieved.
  4. Conditions are returned to set point.
  5. Corrective mechanisms are switched off.
37
Q

What are the four valves in the heart?

A

Tricuspid
Pulmonary
Mitral
Aortic

38
Q

What type of circulation is characterized by oxygen-rich blood?

A

Systemic circulation

Systemic circulation refers to the pathway in which oxygen-rich blood is distributed throughout the body.

39
Q

What is the largest artery in the body?

A

Aorta

The aorta carries oxygenated blood away from the heart to the rest of the body.

40
Q

What does SVC stand for in the circulatory system?

A

Superior vena cava

The superior vena cava is a large vein that carries deoxygenated blood from the upper body to the heart.

41
Q

What is the role of the pulmonary arteries (PA)?

A

Carry deoxygenated blood from the heart to the lungs

The pulmonary arteries transport blood that is low in oxygen to the lungs for oxygenation.

42
Q

What is the function of the pulmonary veins (PV)?

A

Carry oxygenated blood from the lungs to the heart

The pulmonary veins are responsible for returning oxygen-rich blood to the left atrium of the heart.

43
Q

Which chamber of the heart receives deoxygenated blood from the body?

A

Right atrium (RA)

The right atrium collects deoxygenated blood returning from the systemic circulation.

44
Q

Which chamber of the heart pumps oxygenated blood to the body?

A

Left ventricle (LV)

The left ventricle is responsible for pumping oxygen-rich blood into systemic circulation.

45
Q

What is the name of the valve between the right atrium and right ventricle?

A

Tricuspid valve

The tricuspid valve prevents backflow of blood from the right ventricle to the right atrium.

46
Q

What is the name of the valve between the left atrium and left ventricle?

A

Mitral valve

The mitral valve allows blood to flow from the left atrium to the left ventricle while preventing backflow.

47
Q

Fill in the blank: The _______ valve prevents blood from flowing back into the left ventricle from the aorta.

A

Aortic valve

The aortic valve regulates blood flow from the heart into the aorta.

48
Q

What mnemonic can help remember the order of blood flow through the heart?

A

Try, Puling, my, aota!

This mnemonic suggests a sequence related to the flow of blood in the circulatory system.

49
Q

What ventricle has the thickest walls and why?

A

Left ventricle. Because it has to pump blood to the entire body, requiring force.

50
Q

What ventricle has the thickest walls and why?

A

Left ventricle. Because it has to pump blood to the entire body, requiring force.

51
Q

Explain systole

A

Period of contraction in the heart

52
Q

Explain diastole

A

Period of relaxation in the heart

53
Q

Coordinated contraction of myocardial muscle is maintained by?

A

Electrical impulses

54
Q

What are electrical impulses generated by?

A

Sinoatrial node - found in the right atrium

55
Q

What is hypotension?

A

Low blood pressure