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HHP-The Heart > Systemic Circulation > Flashcards

Systemic Circulation Flashcards

1
Q

Vessels are arranged in series and in parallel known as the _____ circuit and _____ circuit.

A

Pulmonary
Systemic

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2
Q

Describe the structure of blood vessel in both types of arteries (elastic and muscular).

A

ELASTIC ARTERIES
- large lumen
- elastin fibres in tunica media
MUSCULAR ARTERIES
- large lumen
- less elastic fibres/more smooth muscle in tunica media

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3
Q

Describe the structure of blood vessel walls in both types of capillaries (continuous and fenestrated).

A

CONTINUOUS CAPS
- smallest lumen
FENESTRATED CAPS
- oval shaped pores in cell wall for dif.

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4
Q

Describe the structure of blood vessel walls in the venous system.

A
  • 3 distinct tunicate (thinner walls)
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5
Q

What’s the meaning of systemic blood pressure?

A

The pressure measured within large arteries in the systemic system

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6
Q

How is systemic blood pressure measured?

A

Blood pressure cuff

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7
Q

What’s the name of the 3 layers in the vessel wall of blood vessels?

A

Tunica adventitia
Tunica media
Tunica intima

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8
Q

What makes up the tunica adventitia?

A

Collagen fibres

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9
Q

What makes up the tunica media?

A

Smooth muscle/elastin fibres

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10
Q

What makes up the tunica intima?

A

Squamous epithelium

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11
Q

What’s meant by microcirculation?

A

Blood flow in caps

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12
Q

Describe the structure of the blood vessel in arterioles.

A
  • majority smooth muscle in media tunica
  • lumen regulates blood flow
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13
Q

What’s the name of the 2 types of arteries?

A

Muscular
Elastic

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14
Q

What’s the names of the 2 types of capillaries?

A

Continuous
Fenestrated

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15
Q

What’s the structure of the blood vessel walls in smaller venules.

A
  • walls of smaller venules is just and endothelium
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16
Q

How is arterial pressure sustained?

A
  • elastin fibres promote pulses
  • high pressure in systolic phase
  • low pressure in diastolic phase
17
Q

In terms of venous pressure what is the ‘respiratory pump’ referencing?

A
  • inspiration increases abdominal pressure which compresses veins
  • inspiration decreases thoracic pressure aiding venous return
18
Q

In terms of venous pressure, what is the ‘skeletal muscle return’ referring to?

A
  • muscles in legs contract and propel venous blood upwards
  • valves prevent back-flow

HHP-The Heart (7 decks)

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