ANAT.Exam.3

Step 1:

Oxygenated blood is pumped from the LA to the LV and then into the Aorta.

Step 2:

Blood passes from the Aorta into elastic arteries and then into muscular arteries before entering arterioles.

Step 3:

Blood in arterioles enters systemic capillaries for exchange of gases & nutrients.

Step 4:

De-oxygenated blood exits capillary beds into venules & then into veins.

Step 5:

Do-oxygenated blood is conducted to either the superior or inferior vena cava & then enters the RA of the heart.

Step 1: (pulm.)

Blood flows from the RA to the RV and is tehn pumped into the Pulmonary Trunk.

Step 2:

The pulm. trunk conducts deoxygenated blood into pulmonary arteries to the lungs.

Step 3:

The blood passes through smaller & smaller arteries before entering pulmonary caps. for gas exchange.

Step 4:

Oxygenated blood exits the lung via a series of larger veins that merge to form the pulm. veins.

Step 5:

Pulm. veins drain into the LA.

Step 6:

Blood enters the LV from the LA.

THE CYCLE REPEATS.