Venous return (VR) is the flow of blood back to the heart. Arteries takes oxygenated blood away from the heart to the body and veins Cary the blood back to the heart and lungs for disposal of CO2 among other things.
It enters the arteries.
to the heart
when blood enters the heart its a bright cherry red colour when it leaves its a dull red/ brown colour hope this helps :) x
Oxygenated blood leaves the left side of the heart through the aorta,the largest artery and then to smaller arteries.Deoxygenated blood leaves the right side of the heart through the pulmonary artery then to arterioles and capillaries.
Veins carry deoxygenated blood back the heart.
It flows through the pulmonary vein toward the heart.
The pulmonary vein enters the left atrium of the heart.
Depleted blood enters and leaves the right side of the heart.
It enters the arteries.
The left pulmonary artery
The blood that leaves the frogs heart through the ventricles is almost pure blood. This blood goes to the brain.
Blood.
As blood leaves the heart it travels through the arteries. The first one will be either the pulmonary artery (for blood leaving the right side of the heart) or the aorta (for blood leaving the left side of the heart).
De-oxygenated blood is dark red. Oxygenated blood is bright red. Both enter the heart- the former enters the right heart; the latter enters the left heart.
to the heart
when blood enters the heart its a bright cherry red colour when it leaves its a dull red/ brown colour hope this helps :) x
heart