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7 Cards in this Set

  • Front
  • Back

What role does the Intercostal muscles have in ventilation

They pull the ribs up and out and down and in during ventilation.

What role does the diaphram have in ventilation

The diaprham contracts and relax

What role do the diaprham and the intercostal muscles have in ventilation

They increase the volume of the Thorax

How are the Aveoli adapted for Gas Exchange

They have a structure that brings the the blood and oxygen very close together.Over a very large surface area.

What effects does smoking have on the lungs and the circulatory

Causes:


Lung Cancer


Emphysema


Bronchitis

What over effects does smoking have

Destroys cillia


Reduces the surface area of the Alveoli


Carbon Monoxide attaches to haemoglobin meaning your body can carry less oxygen

How could you investigate the effects of excercise on breathing jn humans?

•He or she sits quietly for five mintues


•He then counts the number of breaths they take per min while relaxed. Recording his results on a table


•He waits a mintue then records it again


•The subject then does some vigirous excercise


•As soon as they are finish they sit down and record there breathing rate.


•He then continues recording every minthe until it returns to there normal breathing rate