Ventilation: inhalation and expiration

Description

International Baccalaureate Biology (Ventilation) Quiz on Ventilation: inhalation and expiration, created by Lauren Parker on 09/05/2021.
Lauren Parker
Quiz by Lauren Parker, updated more than 1 year ago
Lauren Parker
Created by Lauren Parker about 3 years ago
6
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Resource summary

Question 1

Question
Inhalation: 1. Diaphragm in a [blank_start]relaxed[blank_end] state is domed. When it contracts, it [blank_start]shortens[blank_end] and [blank_start]flattens[blank_end]. 2. [blank_start]External[blank_end] intercostal muscles contract and pull on ribs - lifted up and out.
Answer
  • relaxed
  • shortens
  • flattens
  • External

Question 2

Question
After inhalation, the thoracic cavity will decrease in volume
Answer
  • True
  • False

Question 3

Question
As the the volume of the thoracic cavity increases, air pressure decreases.
Answer
  • True
  • False

Question 4

Question
If the thoracic cavity has a lower air pressure then...
Answer
  • air moves into the lungs down the pressure gradient
  • air moves out of the lungs down the pressure gradient
  • air moves into the lungs up the pressure gradient
  • air moves out of the lungs up the pressure gradient

Question 5

Question
Exhalation: 1. Diaphragm [blank_start]relaxes[blank_end] and rises. 2. The [blank_start]external[blank_end] intercostals relax and internal intercostals [blank_start]contract[blank_end]. 3. The volume of the thoracic cavity [blank_start]decreases[blank_end].
Answer
  • relaxes
  • external
  • contract
  • decreases

Question 6

Question
As the volume of the thoracic cavity decreases, air pressure decreases.
Answer
  • True
  • False

Question 7

Question
As the air pressure in the thoracic cavity increases, air is forced out down the pressure gradient.
Answer
  • True
  • False
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