Absorption Of Materials Flashcards
What do tissues contain
Capillary networks to allow the exchange of materials at cells
Surfaces involved in the absorption of materials have certain features in common. These include:
A large surface area
Thin walls
Extensive blood supply
The windpipe and bronchus are supported and held open by?
Rings of cartilage
What is at the end of the bronchioles
Air sacs and this is where gases are exchanged with the blood
What is the main function of the alveoli
Exchange of gases
Walls of the alveoli are very thin
True
Alveoli is surrounded by a network of blood capillaries
True
What type of blood arrives in the lungs
Deoxygenated blood
Function of large surface area
Allows for diffusion of gases
Function of thin walls
Allows fast diffusion of oxygen into blood and carbon dioxide into the alveoli
Function of Surrounded by large capillary network
Gases can be easily transported to and from the lungs
Function of very long small intestine
Absorption of the small food molecules
What are the products of fat digestion (fatty acids and glycerol) absorbed by
Lacteal
What system are lacteals apart of
Lymphatic system