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Biology SBI3U1 > 12.1/12.2 Kahoot - Function of Circulation and Monitoring Heart Health > Flashcards

12.1/12.2 Kahoot - Function of Circulation and Monitoring Heart Health Flashcards

1
Q

function of the circulatory system?

A
  • protects against infection
  • regulate body temperature
  • transports oxygen & nutrients to body cells
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2
Q

3 components of circulatory system

A
  1. heart
  2. blood
  3. blood vessels
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3
Q

open circulatory system:

A

do not have vessels to contain their blood

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4
Q

What types of animals have Open Circulatory Systems?

A

insects

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5
Q

Hemolymph refers to?

A

insect blood

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6
Q

How many chambers of human’s heart?

A

4

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7
Q

lower chambers of human heart

A

ventricles

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8
Q

What structure divides the heart into left and right sides?

A

septum

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9
Q

pumps blood to left ventricle

A

Lt. atrium

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10
Q

this chamber pumps blood to the lungs

A

right ventricle

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11
Q

The main blood vessel returning to the heart from the body tissues is?

A

vena cava

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12
Q

The main blood vessel bringing blood to the lungs is?

A

pulmonary artery

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13
Q

characteristics of arteries

A
  • high blood pressure
  • Thick and muscular wall
  • no valves
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14
Q

Below are the characteristics of veins

A
  • low blood pressure
  • Thin wall
  • valves
  • transport blood to the heart
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15
Q

Capillaries are tiny blood vessels designed to allow:

A

exchange of substances with tissues

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16
Q

Pulmonary circulation involves…

A

blood flow between the heart and lungs

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17
Q

Systemic circulation involves…

A

blood flow throughout the body

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18
Q

The Coronary Arteries function to:

A

supply blood to the heart muscle

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19
Q

What percentage of blood is Plasma

A

55%

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20
Q

Where are blood cells made?

A

In your bones

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21
Q

Function of your blood’s plasma?

A

carries blood components around the body

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22
Q

Another name for red blood cells:

A

erythrocytes

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23
Q

Hemoglobin requires this element to carry oxygen

A

Iron

24
Q

characteristics of red blood cells,

A
  • biconcave shape
  • no nucleus
  • carries carbon dioxide
25
Q

lifespan of red blood cells

A

120 days

26
Q

White blood cells are also called…

A

Leukocytes

27
Q

What percentage of blood is white blood cells?

A

1%

28
Q

Phagocytosis is when

A

white blood cells eat and digest pathogens

29
Q

characteristic of white blood cells

A
  • larger than red blood cells
  • part of immune system
  • contain a nucleus
30
Q

Another name for platelets

A

Thrombocytes

31
Q

The cell that makes platelets

A

Megakaryocyte

32
Q

What is the function of platelets?

A

to help to clot the blood

33
Q

What is Vasodilation?

A

When Blood Vessels Open Up

34
Q

What happens when your body is too hot?

A

Your blood vessels at surface enlarge to cool you

35
Q

What 2 things happen when your body is too cold?

A
  • vasoconstriction decreases blood flow to extremities
  • Body hairs rise, trapping a layer of air close to the skin
36
Q

What is counter-current heat exchange?

A

conductive heat transfer through blood flowing in opposite directions

37
Q

The SA node is also referred to as the:

A

The pacemaker

38
Q

Where is the SA node located?

A

Upper right atrium

39
Q

The function of the SA node is to:

A

Determines heart rate

40
Q

The function of the atrioventricular node ( AV node) is to:

A

delays electrical signal coming from atria into ventricles

41
Q

The function of the Purkinje fibers is to:

A

conduct electrical signals throughout the ventricles

42
Q

What makes the ‘lub-dub’ sound of the heart?

A

Closure of both the atrioventricular and semilunar valves

43
Q

What causes a heart murmur?

A

Improper closing of a heart valve

44
Q

What does ECG stand for

A

electrocardiogram

45
Q

What does an ECG measure?

A

electrical activity of the heart

46
Q

Abnormal ST wave could indicate:

A

heart attack

47
Q

How do you calculate your resting heart rate?

A

Count the beats for 15seconds and multiply by 4.

48
Q

What is “normal” resting heart rate for adults?

A

60 to 100 beats a minute

49
Q

What is bradycardia?

A

slow heart beat

50
Q

What is tachycardia?

A

rapid heart beat

51
Q

What is arrhythmia?

A

irregular heart beat

52
Q

What is diastolic pressure?

A

Pressure on the blood vessel wall when the heart is relaxing

53
Q

The systolic blood pressure (top number) represents:

A

ventricular contraction

54
Q

What blood pressure below would be considered “normal” for most adults?

A

120/80

55
Q

complications of high blood pressure?

A
  • Stroke
  • Kidney disease
  • Vision loss
56
Q

What is a cause of high blood pressure that is not modifiable?

A

family history

57
Q

modifiable causes of high blood pressure

A
  • diet
  • stress
  • physical activity level

Biology SBI3U1 (39 decks)

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