Human Blood Circulatory System

In which organ exchange of oxygen and carbon dioxide occurs?

• Heart

• Lungs

• Blood

• Vessels

Walls of ___________ are thicker and more muscular. it is because it has to pump ________ to whole body.

• right atrium, deoxygenated blood

• right ventricle, oxygenated blood

• left ventricle, oxygenated blood

Y is a blood vessel with thick layer of muscles, and a small lumen. what is Y?

• artery

• vein

• blood capillary

Human heart has 4 chambers. Which of the following is not a chamber in heart?

• right atrium

• left atrium

• capillaries

• left ventricle

W is a wall of muscles that divides the heart into two cavities. what is W?

• septum

• vein

• alveoli

• aorta

which of the following are the characteristics of blood capillary?

• carry oxygenated blood, has a large lumen

• the wall is only one-cell thick and has a very small lumen

• has a large lumen and thin layer of muscles

Sophie has blood type AB. What type of blood group can donate to Sophie during a blood transfusion?

• O, A

• O

• O,A,B

• O,A,B,AB

What is the function of valve?

• to make sure that blood flows regularly

• to enable blood flow in two directions

• to prevent veins from getting blood clot

• to prevent blood from flowing backwards

which is correct about pulmonary circulation?

• from heart -> lungs-> heart

• from heart -> to all parts of body (except lung) -> heart

• from lung> heart -> body

which blood group contains anti-B and Anti-B and no antigen?

• A

• B

• O

• AB