Assimilation Adv.bio

Which of the following is the important function of the circulatory system?

• Supports and protects the body

• Breaks down food into soluble absorbable form

• Sends signals from one cell to others, or from one part of the body to others.

• Transports of oxygen, carbon dioxide, nutrients, and waste products.

What chamber of the heart is responsible for receiving blood as it returns from the lungs after it has been reoxygenated?

• Right atrium                    

• Left atrium                       

• Right ventricle

• Left ventricle

Which of the following is NOT included in the components of the circulatory system?

• Heart                             

• Blood

• Blood Vessels

• Pericardium

Which blood vessel carries the blood from the body towards the right atrium of the heart?

• Aorta     

• Pulmonary artery         

• Vena cava

• Pulmonary vein

Why is blood that flows from the lungs to the heart bright red rather than dark red?

• Oxygen combines with blood making it bright red

• Carbon dioxide combines with the blood making it bright red.

• The lungs remove oxygen from the blood through its capillaries

• The lungs add dye to the blood through its capillaries before the returns to the heart.