PE The Cardiovascular And Respiratory System Flashcards Preview

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Flashcards in PE The Cardiovascular And Respiratory System Deck (30)
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1
Q

structure of the arteries

A

thick muscular walls and small lumen

2
Q

function of the arteries

A

carry oxygenated blood away from the heart under high pressure

3
Q

structure of the veins

A

they have thinner walls and a larger lumen

4
Q

function of the veins

A

carry deoxygenated blood back to the heart under low pressure

5
Q

structure of the capillaries

A

one cells thick

6
Q

function of the capillaries

A

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

7
Q

what is stroke volume ?

A

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

8
Q

what is cardiac output ?

A

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

9
Q

what is heart rate ?

A

is the number of times the heart pumps is one minute

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

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

12
Q

what is diastole ?

A

when chambers of the heart relax and fill with blood

13
Q

what is systole ?

A

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

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

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
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