quiz 9 Flashcards
How does a rich capillary network around the alveoli improve diffusion of gases?
It increases the size of the gas exchange surface
Where is the “natural” peacemaker of the heart located?
The right atrium
Name where carbohydrase is made in the body.
Salivary glands,pancreas and small intestine
Is blood a cell,tissue or organ
A tissue
When the muscles in the atria contract, where does the blood go
To the ventricles
How does the mucus in the alveoli improve diffusion?
It dissolves gases from the air for more efficient gas exchange
What does blood transport from the small intestine to other organs?
soluble products of digestion
When would an artificial heart be used?
- to allow the heart to rest and recover
- To keep the patient alive whilst they wait for a transplant
why are faulty heart valves life-threatening
They allow back-flow of blood in the heart
Which system transports substances around the body?
The circulatory system
