Heart, Blood, and Small Intesine Flashcards
Where does de-oxygenated blood from the body enter the heart?
Vena cava
Where does oxygenated blood from the lungs enter the heart?
Pulmonary vein
Where does de-oxygenated blood travel to the lungs?
Pulmonary artery
Where does oxygenated blood travel to the rest of the body?
Aorta
What are valves for?
To prevent the backflow of blood
What are the two types of white blood cells?
Lymphocyte and phagocyte
What are the features of alveoli and villi that make them good for the diffusion of substances?
Large surface area
Extensive blood supply
Thin walled
What substances are absorbed from the small intestine into the blood capillaries of villi?
Glucose and amino acids
What substances are absorbed from the small intestine into the lacteals of villi?
Fatty acids and glycerol
