B2, Organisation Flashcards

1
Q

which blood vessel carries deoxygenated blood away from the heart to the lungs

A

passage next to the right atrium

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2
Q

Where in the heart are ‘pacemaker cells’ found

A

right atrium

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3
Q

Where does the drug digitalis originate from

A

foxgloves

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4
Q

Name the enzyme that digests starch in the human digestive system

A

amalayse

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5
Q

what is the reagent used to test for starch

A

iodine solution

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6
Q

what is the reagents used to test for sugar

A

benedict solution

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7
Q

Name the enzyme that digests protein in the human digestive system

A

protease

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8
Q

Name the enzyme that digests lipid in the human digestive system

A

lipase

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9
Q

what is lipid

A

fat/ oil

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10
Q

what small molecule does protease absorb

where is protease found

A
  • amino acids

- stomach, pancreas and small intestine

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11
Q

what small molecule does amelayse absorb

where in the body do you find amelayse

A
  • glucose

- small intestine, pancreas, salivary gland (mouth)

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12
Q

what small molecule does lipase absorb

where in the body is lipase found

A
  • fatty acid and glycerol

- pancrease and small intestine

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13
Q

where is bile made and stored

where does it go

A

made in the liver, stored in the gall bladder

goes into the small intestine

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14
Q

what is atheroma

what does it cause

A

buildup of colesterol in the walls of the coronary artery

narrow lumen meaning less blood can go through

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15
Q

what is a thrombus

A

blood clot that can block a coronary artery

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16
Q

aneurysm

what can it cause

A

rupture in a blood vessel due to a weakening of the wall of the artery
reduce the flow of blood through a coronary artery

17
Q

what is a heart attack

A

when heart muscle cells (usually) in the left ventricle receive insufficient blood

18
Q

what is a lumen

A

hole in the middle of an artery

19
Q

what types of tissue do artery walls have

A

elastic and muscle

20
Q

why does the artery wall have elastic tissue

A

to pump and accommodate high pressure blood

21
Q

why does the artery wall have elastic tissue

A

to help push blood along when the heart is relaxed

22
Q

why does the artery wall have muscle tissue

A

to control blood flow to different parts of the body and control blood pressure

23
Q

non-communicable disease

A

disease that cannot be passed from one person to another/ not caused by a pathogen

24
Q

stages in the formation of cancers in humans

A
  • genes that control cell division change (accept mutation)
  • cell undergoes uncontrolled division
  • malignant spread to different parts of the body
  • forming secondary tumors
25
state 2 advantages of an electron microscope over a light microscope
- higher magnification | - higher resolution
26
why is it difficult to develop drugs that kill viruses
viruses live and reproduce in cells do those drugs could damage or kill healthy cells
27
effect of HIV in humans
- presents flu-like symptoms - attacks the immune system - immune system becomes so weak it cannot deal with disease or infection