____ blood that has traveled through the body supplying nutrients to tissues eventually returns to the heart through the superior and the inferior ____. Blood then enters the ____ where a small contraction pushes blood through the ____ and into the ____. Blood is then pushed out through the ____ and into the pulmonary trunk. This structure branches into two, the left and the right ____ which will deliver the blood to the lungs where it will become ____. Gas exchange occurs in the ____. Respiratory structures called ____ diffuse ____ into tiny blood vessels called ____. Those blood vessels diffuse ____ in return, and blood is now oxygenated. Blood returns from the lungs through the left and right ____ which empties into the ____. Blood then goes through the ____ and enters the ____. A powerful contraction will send blood through the ____ and into the ____, where blood will travel to body tissues.

Pathway of Blood through the Heart

bởi
Nhúng

Bảng xếp hạng

Phong cách trực quan

Tùy chọn

Chuyển đổi mẫu

Bạn có muốn khôi phục tự động lưu: không?