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25 questions
Atria pumps blood to the:
Arteries
Body cavities
Veins
Ventricles
The only artery in humans that carries deoxygenated blood is the:
Pulmonary artery
Renal artery
Aorta
Carotid artery
The direction of blood flow through the human body is maintained by:
The elasticity of the vein walls
The pump action of the heart
Muscular contractions
A system of valves
Blood leaves the heart in two vessels, namely the:
Aorta and pulmonary vein
Pulmonary artery and aorta
Aorta and venae cavae
Pulmonary artery and pulmonary vein
A boy is bitten by a venomous snake on his left leg. Poison gets to his heart through the:
Pulmonary vein
Left subclavian artery
Inferior vena cava
Hepatic portal vein
Which of the following contain deoxygenated blood?
Left ventricle
Pulmonary vein
Right atrium
Coronary artery
The phase in the cardiac cycle when blood is pumped out of the ventricles is called:
Atrial systole
Ventricular diastole
Atrial systole
Ventricular systole
A blood vessel is called an artery when it:
Transports oxygenated blood to the heart
Transports blood to the heart
Contains many valves
Transports blood away from the heart
Which of the following illustrates the circulatory system?
Type of circulation that refers to blood flow from the heart to the lungs and back to the heart again?
Systemic circulation
Renal circulation
Portal circulation
Pulmonary circulation
Type of circulation that refers to the blood flowing through the entire body?
Systemic circulation
Renal circulation
Portal circulation
Pulmonary circulation
The contraction/emptying phase of the cardiac cycle?
Systole
Diastole
The relaxing/filling stage of the cardiac cycle?
Systole
Diastole
The type of blood vessel that normally carries de-oxygenated blood back to the heart from body cells?
arteries
capillaries
veins
The type of blood vessel that normally carries oxygenated blood from the heart to the body cells?
arteries
capillaries
veins
The type of blood vessel where exchange of gases, nutrients, and wastes occurs?
arteries
capillaries
veins
The main vein(s) that brings blood to the right atrium?
Aorta
Pulmonary veins
Superior and Inferior vena cava
Jugular vein
These cells play a vital role in defending the body against infection
Leucocytes
Erythrocytes
Blastocytes
Plasmacytes
_______ function in the life-saving process of clotting blood.
Phagocytes
Leucocytes
Erythrocytes
Platelets
Blood cells that carry oxygen are called?
leucocytes
erythrocytes
lymphocytes
monocytes
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