PE The Cardiovascular And Respiratory System Flashcards

1
Q

structure of the arteries

A

thick muscular walls and small lumen

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2
Q

function of the arteries

A

carry oxygenated blood away from the heart under high pressure

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3
Q

structure of the veins

A

they have thinner walls and a larger lumen

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4
Q

function of the veins

A

carry deoxygenated blood back to the heart under low pressure

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5
Q

structure of the capillaries

A

one cells thick

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6
Q

function of the capillaries

A

link the veins and arteries together and are used for gaseous exchange

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7
Q

what is stroke volume ?

A

the amount of blood pumped out of the heart by each ventricle per contraction

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8
Q

what is cardiac output ?

A

is the volume of blood ejected from the heart in the minute

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9
Q

what is heart rate ?

A

is the number of times the heart pumps is one minute

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10
Q

what is vasoconstriction ?

A

narrowing of the internal diameter of blood vessels
to restrict the blood flow through them
this is done to restrict the amount of blood going to inactive areas in sport

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11
Q

what is vasodilation ?

A

widening of the internal diameter of blood vessels to increase blood flow through them
this is done in sport to increase the amount of blood traveling to the active areas

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12
Q

what is diastole ?

A

when chambers of the heart relax and fill with blood

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13
Q

what is systole ?

A

when the chambers of the heart contract and empty, when blood is ejected from the heart

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14
Q

what is the respiratory system ?

A

the system that brings in oxygen to the body so it can be used to produce energy

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15
Q

what is the pathway of air through the body ?

A
  • air enters through the mouth/nose
  • travels down the trachea
  • this connects to the lungs
  • then it passes through bronchi and the bronchioles and into the alveoli where gaseous exchange takes place
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16
Q

how does gaseous take place ?

A

-oxygen passes through the alveoli and into the red blood cells
-in the capillaries the oxygen combines with haemoglobin
and make oxyhaemoglobin and is carried around the body
-at the same time haemoglobin carries carbon dioxide from the body to the capillaries
-the carbon dioxide passes through the alveoli and is breathed out

17
Q

what features of the alveoli help for gaseous exchange ?

A
  • thin, one cell thick
  • moist surface area
  • large surface area
  • has many capillaries running across the alveoli
18
Q

what is haemoglobin ?

A

a protein found in the red blood cells that transport oxygen and carbon dioxide around the body

19
Q

what is oxyhaemoglobin ?

A

a chemical formed when haemoglobin form with oxygen

20
Q

how do we breath in ?

inspiration

A
  • diaphragm contracts and moves down
  • the intercostal muscles contract, pushes the ribs up
  • pushes out the sternum
  • increase the chest cavity
  • reduces air pressure in the chest
  • sucks air in
21
Q

how do we breath out ?

expiration

A
  • the diaphragm relaxes, moves up
  • intercostal muscles relax , moving the ribs down
  • dropping the sternum
  • makes chest cavity smaller
  • increases the air pressure
  • pushes air out
22
Q

what is aerobic respiration ?

A

respiration where oxygen is present

23
Q

what is anaerobic respiration?

A

respiration where oxygen is NOT present

24
Q

examples of aerobic respiration ?

A
  • marathon
  • long distance swimming
  • endurance cycling
25
Q

examples of anaerobic respiration ?

A
  • 100m sprint
  • triple jump
  • weight lifting
26
Q

what does EPOC stand for ?

A

Excess
Post -
Oxygen
Consumption

27
Q

what is EPOC ?

A

the amount of oxygen need to recover after anaerobic respiration

28
Q

what are the signs of EPOC ?

A

increased heart rate

deep breathing

29
Q

how might someone repay oxygen debt or EPOC ?

A
  • ice baths
  • massage
  • cool down
30
Q

what does EPOC do ?

A

replenishes the body with oxygen to break down the lactic acid produced in anaerobic excercise and turn it into carbon dioxide, glucose and water