As blood flows through the heart, the __________ __________ ...

[sam.t96]

As blood flows through the heart, the __________ __________ receives oxygenated blood from the lungs through the four pulmonary veins.
 Fill in the blank(s) with correct word

Question 2

Of the three types of blood vessels, blood flows most slowly through the ___________________ _, allowing more time for the diffusion of oxygen, nutrients, and waste products.
 Fill in the blank(s) with correct word

[Mollythedog]

Answer to Question 1

left atrium

Answer to Question 2

capillaries