Mammalian Circulatory System Concepts

A circulatory system that does not allow mixing of oxygenated and de-oxygenated blood in mammalian heart is referred to as (jamb 1994)

• A. open

• B. haemocoelic

• C. single

• • D. closed

The primary structure responsible for pumping blood for circulation through the mammalian circulatory systems is the? (Jamb 2010)

• • A. veins

• B. right auricle

• • C. arteries

• • D. left ventricle

Circulation of blood to all parts of the body except the lungs is through?

• • A. the pulmonary artery

• B. systemic circulation

• • C. the lymphatic system

• • D. pulmonary circulation

The blood component that has the greatest affinity for oxygen is the?

• A. lymphocytes

• B. leucocytes

• C. erythrocytes

• D. thrombocytes

. Blood circulation in a mammal is said to be double because? ( jamb 2021)

• A. it passes twice through the heart in a complete circuit

• B. it moves in both arteries and veins

• C. it circulates in both the heart and other organs

• D. the heart contains auricles and ventricles.

What is the name of the valve that separates the left atrium and the left ventricle?

• Aortic valve

• Mitral valve

• Tricuspid valve

• Pulmonary valve

Which chamber of the heart pumps oxygenated blood to the body?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle

What part of the heart delivers richly oxygenated blood to the body?

• Tricuspid Valve

• Superior Vena Cava

• Aorta

• Pulmonary artery

How many chambers does the heart have?

• a. 1

• b. 2

• c. 3

• d. 4

A flap of tissue that prevents blood from flowing backward ?

• Aorta

• Atrium

• Septum

• Valve