Human Body Systems at University Of Huddersfield | Flashcards & Summaries

Lernmaterialien für human body systems an der University of Huddersfield

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hormones are classified according to their chemical composition what are they

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1. polypeptide hormones

2. amine hormones

3. steroid hormones 

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what is the location of the baroreceptors there are 2

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  1. aortic arch
  2. carotid sinus
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when does insufficient/incompetent valve occur and what noise does this make

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when valves cannot close properly so backflow of blood causes turbulence 

noise- swishing gurgling

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what is vasodilation caused by

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circulating adrenaline from the sympathetic nervous system acts on beta 2 receptors

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what is the relationship between blood flow pressure and resistance

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blood flow= perfusion pressure/total peripheral resistance

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blood flow is proportional to 

and total peripheral resistance is proportional to

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blood flow is proportional to radius to the power of 4

TPR is proportional to 1/radius to the power of 4

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name the blood vessels of the cardiovascular system in order largest to smallest 

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  1. artery
  2. arteriole
  3. capillary
  4. venule
  5. vein
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when does stenotic valve occur and what sound does it make 

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when the valves are stiff and narrow so they cant open properly so blood is forced with high pressure makes a whistling noise

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examples of steroid hormones

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1. testosterone

2. oestrogen

3. progesterone 

4. cortisol

5. cholesterol

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what is vasoconstriction caused by 

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it is caused by vasomotor fibres of the sympathetic nervous system releasing noradrenaline which acts on alpha one receptors

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examples of polypeptide hormones 

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1. anti-diuretic hormone

2. oxytocin

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The Korotkoff sounds are generated by

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turbulent blood flow through the brachial artery

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Q:

hormones are classified according to their chemical composition what are they

A:

1. polypeptide hormones

2. amine hormones

3. steroid hormones 

Q:

what is the location of the baroreceptors there are 2

A:
  1. aortic arch
  2. carotid sinus
Q:

when does insufficient/incompetent valve occur and what noise does this make

A:

when valves cannot close properly so backflow of blood causes turbulence 

noise- swishing gurgling

Q:

what is vasodilation caused by

A:

circulating adrenaline from the sympathetic nervous system acts on beta 2 receptors

Q:

what is the relationship between blood flow pressure and resistance

A:

blood flow= perfusion pressure/total peripheral resistance

Mehr Karteikarten anzeigen
Q:

blood flow is proportional to 

and total peripheral resistance is proportional to

A:

blood flow is proportional to radius to the power of 4

TPR is proportional to 1/radius to the power of 4

Q:

name the blood vessels of the cardiovascular system in order largest to smallest 

A:
  1. artery
  2. arteriole
  3. capillary
  4. venule
  5. vein
Q:

when does stenotic valve occur and what sound does it make 

A:

when the valves are stiff and narrow so they cant open properly so blood is forced with high pressure makes a whistling noise

Q:

examples of steroid hormones

A:

1. testosterone

2. oestrogen

3. progesterone 

4. cortisol

5. cholesterol

Q:

what is vasoconstriction caused by 

A:

it is caused by vasomotor fibres of the sympathetic nervous system releasing noradrenaline which acts on alpha one receptors

Q:

examples of polypeptide hormones 

A:

1. anti-diuretic hormone

2. oxytocin

Q:

The Korotkoff sounds are generated by

A:

turbulent blood flow through the brachial artery

human body systems

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