Circulatory system Flashcards

1
Q

Arteries

A

blood vessels carrying oxygenated blood away from the heart and to the tissues

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Veins

A

blood vessels carrying blood toward the heart to remove waste and pick up more oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Capillaries

A

fine-branching blood vessels forming a network between the arterioles and venules, where transport of nutrients and oxygen or carbon dioxide occurs on a microscopic scale

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Arterioles

A

the smaller branches of the arteries leading to the capillaries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Venules

A

the small branches of the veins gathering blood from the capillaries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Heart

A

The heart beats about 100,000 times per day.
For every minute of work, the heart pumps five (5) to six (6) quarts of blood around the body.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Atrium

A

one of the two upper cavities of the heart passing blood to the ventricles. The plural is “atria.”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Ventricle

A

one of the two lower cavities of the heart passing blood to the body or to the lungs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Pulmonary arteries

A

blood vessels moving blood from the heart to the lungs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Pulmonary veins

A

blood vessels returning oxygenated blood to the heart from the lungs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Aorta

A

the main artery in the body that supplies oxygenated blood to the circulatory system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Superior vena cava

A

the blood vessel moving blood from the upper body and head to the heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Inferior vena cava

A

the blood vessel moving blood from the lower body to the heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Atrioventricular (AV) valves

A

valves between the atria and ventricles preventing the backward flow of blood during cardiac contractions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Sinoatrial (SA) node

A

the pacemaker of the heart that generates the first electrical signal of a heartbeat and stimulates the atria to contract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Atrioventricular (AV) node

A

the nerve node between the right atrium and right ventricle that propagates the electrical signal from the SA node to more distal heart nerves that cause ventricular contraction

17
Q

Movement of blood through the circulatory system

A

deoxygenated blood from body > right atrium > tricuspid valve > right ventricle > pulmonary artery (to lungs) > pulmonary vein (oxygenated) from lungs > left atrium > bicuspid valve > left ventricle > aorta (to body for circulation)

18
Q

Blood cells types

A

Red Blood cells

White blood cells

19
Q

Red Blood cells

A

Erythrocytes: the most numerous of all blood cells (approx. 40 percent of blood volume) that transfer oxygen to the body tissues

20
Q

White blood cells

A

Basophil
Neutrophil
Eosinophil
Monocyte
Lymphocyte

21
Q

Basophil

A

a large white blood cell that locates and destroys cancerous cells and is responsible for the histamine response during an allergic reaction

22
Q

Neutrophil

A

the most numerous white blood cells responsible for the primary immune response of the ingestion or enzymatic digestion of foreign microorganisms

23
Q

Eosinophil

A

white blood cells that play a role in allergic reactions and immune defense against multicellular parasites

24
Q

Monocyte

A

an immune cell that helps remove dead or damaged tissues and provides support to the other types of white blood cells

25
Q

Lymphocyte

A

white blood cells that include natural killer cells, B cells, and T cells, which kill tumor cells, produce antibodies, and kill infected or cancerous cells, respectively

26
Q

Systole

A

the heartbeat phase where muscle contraction moves blood from the heart chambers to the arteries

27
Q

Diastole

A

the heartbeat phase where the cardiac muscle relaxes and the heart chambers fill with blood

28
Q

Stroke volume

A

the amount of blood pumped by the left ventricle of the heart in one contraction

29
Q

Heart rate

A

the number of heartbeats per minute
Average human resting heart rate is 60 to 100 beats per minute

30
Q

Pulmonary circulation

A

the blood flow between the heart and the lungs

31
Q

Systemic circulation

A

the blood flow between the heart and the rest of the body

32
Q

Cardiac cycle

A

the action of the heart from the start of one heartbeat to the beginning of the next

33
Q

Pulse

A

rhythmical throbbing of the arteries as blood is propelled through them

Measured at neck (carotid artery) or wrist (radial artery)

34
Q

Blood pressure

A

the force of blood pushing against the walls of the arteries during the two phases of the cardiac cycle
‘Normal’ range blood pressure: 120/80 mm Hg

35
Q

Hypotension

A

low blood pressure measuring 90/60 mm Hg or lower

36
Q

Hypertension

A

high blood pressure measuring more than 140/90 mm Hg

37
Q

Systolic

A

the pressure in blood vessels when the heart beats (ventricular contraction)

38
Q

Diastolic

A

the pressure in blood vessels when the heart rests (ventricular filling)

39
Q

Factors influencing blood pressure

A

Cardiac output: how much blood the heart is pumping per minute
Blood volume: the total volume of blood contained in the circulatory system
Peripheral resistance of arteries: the elasticity (or lack thereof) of artery walls
Blood viscosity: the thickness of blood moving through circulation