quiz 10 Flashcards
Which of the food group molecules begins to be digested in the stomach?
proteins
Which are the upper chambers of the heart?
Atria
Why is digestion important?
Digestion produces small molecules that can be absorbed into our blood
Which of the 7 main food groups are large polymer molecules?
Fats,carbohydrates and proteins
How does having thin walls improve diffusion in the alveoli?
It decreases the distance that gases have to travel
What are the coronary arteries?
Blood vessels that supply the heart muscle tissue with blood
Name a risk of surgical intervention in heart disease
infection
What do white blood cells do?
Defend the body against micro-organisms
How does the movement of blood in the capillaries surrounding the alveoli improve diffusion of gases
It maintains the concentration gradient between alveoli and the blood
What protects the lungs?
The rib cage
