circulatory system Flashcards

1
Q

what is blood

A

connective tissue, body fluid that delivers necessary substances

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2
Q

what is blood made out of

A

55% plasma - water, vitamins, nutrients
45% blood cells - white, red, platelets

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3
Q

how much blood does a person have

A

around 7% of their body mass

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4
Q

where is blood produced

A

in a longbone - red bone marrow (accumulated in the spleen)

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5
Q

what is a spleen, what does it do and where is it

A

organ below our lungs, that cleans blood and recycles it. Hug yourself, your right hand’s fingertips will be right on it (below the ribs)

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6
Q

what are white blood cells, where are they made, stored, lifespan, color, nucleus, normal cell count, function

A

leukocytes, in the bone marrow, in your blood and lymph tissues, some live less than a day so bone marrow is always making them, colorless, have a nucleus, we produce nearly 100 billion daily, cell count 4000-11000cells/microliter, help body fight infection, diseases

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7
Q

what does plasma do, how much of it do we have, color, what is it made out of

A

carries the blood cells through the body, 55% of the blood, yellow, made out of water, nutrients, proteins, electrolytes, glucose, hormons

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8
Q

how are red blood cells called, function, shape, quantity, nucleus, color

A

erythrocytes, deliver O2 to tissues in your body, disk shaped, have around 20-30 trillion, 70% of cells dont have nucleus and are red

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9
Q

how are platelets called, nucleus, color, shape, function

A

trombocytes, no nucleus, colorless, shapeless, blood clotting

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10
Q

why is iron important

A

enough iron is needed so it can bind to oxygen molecules and transport oxygen from your lungs to all the cells of your body

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11
Q

which blood cells do we have the most

A

erythrocytes

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12
Q

if you fall and scrape your knee, what will red blood cells do

A

create collagen that forms the foundation for new tissue, delivers co2

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13
Q

how can u get anemia

A

from iron-poor diet, chronic disease, big amounts loss of blood, if the bone marrow isnt producing enough RBCs due to cancer treatment or kidney failure

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14
Q

how can u treat anemia

A

include more iron in your diet, blood transfusions, iron pills or infusions of iron

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15
Q

what is checked when you want to give blood

A

hematocrit levels because if theyre too low the person may be anemic

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16
Q

what is hemaglobin

A

protein that transforms bloon in erythrocytes

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17
Q

what is fibrin, where is it

A

protein in our muscles, thats a part of clot forming

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18
Q

what determines the blood type

A

red blood cells

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19
Q

how are erythrocytes adapted to transform more oxygen and form new foundation tissues

A

through their shape, surface area, size, curves, absence of nucleus(so more O2 can be transfered)

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20
Q

what is an antigen

A

a foreign substance that enters your body this includes viruses, bacteria, allergens, venom and other various toxins

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21
Q

what is an antibody

A

protein produced by your immune system to attack and fight off antigens

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22
Q

group A

A

antibodies - anti B
antigens- A antigen

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23
Q

group B

A

antibodies - anti - A
antigens - B antigen

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24
Q

group AB

A

antibodies - none
antigens - A and B antigens

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25
group O
antibodies - anti - A and anti - A antigens - none
26
what happens if the incorrect blood is transfered
your blood clumps, allergies get stimulated, kidney fails, high fever, crucial pain and death
27
which group can get any blood transfer
AB because it doesn't have any antibodies
28
how does blood clot
when skin breaks collagen is exposed and that attracts platelets who clog the wound. exposure to outside chemicals makes it sticky, then fibrin and fibrinogen wrap around the platelets to make the clog more secure
29
what is a fibrinogen
protein that turns into fibrin when an iniury ocurrs
30
what is hemophilia
genetic disorder that impairs the body's ability to make blood clots
31
what can cause hemophilia
mutated gene on the X chromosome, it can be inheritated
32
how can hemophilia be treated
infuse of comercially prepared clotting factor concentrates (into a vein)
33
types of bleeding
arterial - bright red, splurting out venous - dark red, continiuous flow capillary - light red, oozes out
34
how to act if someone is bleeding arterialy
apply pressure with turnikat before the wound or insert your fingers into the wound to stop the bleeding
35
how to act if someones bleeding venously
apply pressure, press with your hands where its bleeding
36
how is blood clotting affected by temperature
the higher the temperature the quicker it clots
37
how to stop nosebleed (epistaxis)
avoid nose blowing, pinch the nose, remain calm, lean forward, use a spray decongestant that tightens the vessels, aply an intransak device that applies constant local pressure to the nose septum
38
what is hematocrit
a blood test that measures how much of a person's blood is made up of red blood cells as opposed to plasma
39
what concentration of hematocrit is usual
men 40%-54% women 36%-48%
40
what if theres too much/little of hematocrit
too little - anemia too much - risk of developing cardiovascular disease increases
41
what is C reactive protein, what makes it
protein made by the liver that increases when theres an inflammation in the body
42
how long does it take for your red blood cells to fall to the bottom of a sample of your blood in a vertical container
males <50 y.o. : maziau arba 15mm/hr >50y.o. maziau arba 20mm/hr females <50 y.o. maziau arba 20mm/hr >50y.o. maziau arba 30mm/hr
43
what does it mean if ESR shows that red blood cells sink too fast/slow
too fast - medical condituon causing inflammation (fighting disease/infection) too slow - blood disoder: Polycythemia
44
normal range of CRP
0-3mg/L of blood
45
what if the CRP is too low/high
too high- acute bacterial infections, viral infections, systemic vasculitis too low - slow level inflammation
46
what do valves do
seperate its chembers so blood only flows in one side
47
how are the chambers called
2 - ventricles (lower) 2 - atrium (upper)
48
capillary structure, direction of blood flow, type of blood
single layer, very thin, from high pressure to low (arteries->capillaries->veins), carries both oxygenated and deoxygenated blood
49
veins structure, direction of flow, type of blood
3 thin walled layers, less elastic, valves from the whole body to the hesrt, deoxygenated
50
artery structure direction of flow and type of blood
thick muscular 3 layers, away from the heart, oxygenated
51
what pumps blood to the lungs
right ventricle
52
what pumps oxygen-rich blood to the rest of the body
left ventricle
53
which part of the heart receives blood from the body
right atrium
54
which part of the heart receives blood from the lungs
left atrium
55
which ventricle has thicker walls and why
left because it pumps blood at higher pressures ( a higher workload)
56
where does blood go after it passes lungs
gains oxygen content and gets rid of waste product before flowing back to the heart
57
heart contraction&relaxation phases
systole - contracts, pumps blood out diastole - relaxes, heart fills with blood
58
normal pulse
60-90bpm
59
normal blood pressure
80-120mm/Hg
60
how to calculate maximum heart rate
220-your age
61
what happens if theres too much cholesterol in your body
risk of having a stroke or a heart attack increases, fatty deposits can form in your arteries, clog them, they can burst or blood cant go through
62
what is cholesterol, where is it produced, found, what is it used for
a type of fat produced in the liver, found in blood, cells, used to build the structure of the cell membrane, produce hormons, vitamin D, helps metabolism work efficiently
63
types of cholesterol
LDL (low-density lipoprotein) carries cholesterol to tissues HDL (high-density lipoprotein) absorbs cholesterol in the blood and carries it back to the liver
64
what is atherosclerosis
a disease of the arteries when fat material forms on the inner walls and narrows it down
65
what prevents atherosclerosis, why
physical acitivtity (because it stimulates bloods flow that breaks down cholesterol clots, decreases the amount of fat)
66
what causes heart attacks & strokes
heart attacks - coronary artery disease, sudden contraction of a coronary artery strokes - blocked blood flow to the brain or sudden bleeding in the brain
67
main symptoms of heart attacks&strokes
heart attacks - chest pain, back pain, neck pain, vomiting, shortness of breath, faint strokes - sudden confusion, loss of memory, loss of speech, loss of sight, one side of the body
68
which organs do heart attacks&strokes impact
heart attacks affect tour HEART, liver, kidney strokes affect your BRAIN
69
how can heart attacks&strokes be prevented
heart attacks - watch your weight, dont smoke/drink, manage stress strokes - healthy diet, weight, physical activity, dont smoke/drink
70
how is it called when blood pressure increases, why may it increase
hypertension, caused by stress, cholesterol, genetics, health conditions, lifestyle