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.