#4; Chap. 19; BLOOD FLOW THROUGH HEART

Step eight: contraction of left ventricle (simultaneous with step 3) forces ____ open.

Aortic Valve

Step nine: blood flows through aortic valve into ____.

Ascending Aorta

Step ___: contraction of left ventricle (simultaneous with step 3) forces aortic valve open.

Eight

Step ___: blood returns to heart via venae cavae.

Eleven

Step ten: blood in aorta is distributed to ___ in the body, where it unloads O2, & loads CO2.

Every Organ

Step ___: blood is distributed by right & left pulmonary arteries to the lungs, where it unloads CO2 & loads O2.

Five

Step ___: blood flows through pulmonary valve into pulmonary trunk.

Four

Step six: blood returns from lungs via pulmonary veins to ___.

Left Atrium

Step seven: blood in left atrium flows through left AV valve into ___.

Left Ventricle

Step ___: blood flows through aortic valve into ascending aorta.

Nine

Step ___: blood enters right atrium from superior & inferior vena cavae.

One

Step four: blood flows through pulmonary valve into ____.

Pulmonary Trunk

Step three: contraction of right ventricle forces ___ open.

Pulmonary Valve

Step five: blood is distributed by ___ to the lungs, where it unloads CO2 & loads O2.

Right & Left Pulmonary Arteries

Step one: blood enters ___ from superior & inferior vena cavae.

Right Atrium

Step two: blood in right atrium flows through right AV valve into ____.

Right Ventricle

Step ___: blood in left atrium flows through left AV valve into left ventricle.

Seven

Step ___: blood returns from lungs via pulmonary veins to left atrium.

Six

Step ___: blood in aorta is distributed to every organ in the body, where it unloads O2, & loads CO2.

Ten

Step ___: contraction of right ventricle forces pulmonary valve open.

Three

Step ___: blood in right atrium flows through right AV valve into right ventricle.

Two

Step eleven: blood returns to heart via ____.

Venae Cavae