Respiratory System Flashcards
_________ __________ occurs across specialized respiratory surfaces
Gas exchange
How do simple animals breathe?
Diffusion - All of the animal’s body cells are located within 2 cells of the medium
Do earthworms have a respiratory system?
No
What kind of respiratory do earthworms use
Cutaneous (through skin) respiration
True or false… earthworms have thick skin
False, it’s thin
Where are blood vessels located in an earthworm
Near surface of the skin
Why do earthworms surface during rain storms
So they do not drown from rainwater and it’s more difficult to move in wet soil
What kind of respiratory system do insects have?
Tracheal systems
True or false… every single cell has its own tracheole
True
As the tracheoles get smaller, it is (easier or harder) to absorb air
Harder
What are spiracles
Openings
What make up the trachea rings in the tracheal system
Chitin
What is the limiting factor in the tracheal system
Length of the tubes
Larger insects use what to help move air throughout the system
Flight muscles
Why are giant insects impossible
Airflow resistance
- tube length and diameter
Diffusion rate
Chitin support limited
How do amphibians breathe (generalize)
Lungs and skin
How do amphibians breathe (not skin)
Inflate lungs with forced air
What kind of pressure is forced ventilation
Positive pressure
What are the steps to an amphibian breathing?
- Air into mouth
- Collect into buccal cavity
- Glottis closes
- Nostrils close/ buccal cavity forces air up
- Glottis opened
- Air goes to lungs
Lungs are considered what?
Infoldings of the body surface
What type of cells are the lungs?
Simple squamous epithelium
What occurs in the lungs?
Transport gases between the lungs and the rest of the body
What are the two gasses part of respiration
CO2 and O2