Which of the following is not a component of blood?
a) Plasma
b) Red blood cells
c) White blood cells
d) Platelets
Answer: e) All of the above are components of blood
The main function of plasma is to:
a) Transport oxygen
b) Carry nutrients
c) Carry waste products
d) All of the above
Answer: d) All of the above
Which of the following is responsible for clotting of blood?
a) Red blood cells
b) White blood cells
c) Platelets
d) Plasma
Answer: c) Platelets
Which of the following blood vessels carry blood away from the heart?
a) Arteries
b) Veins
c) Capillaries
d) Lymph vessels
Answer: a) Arteries
Which of the following blood vessels have thin walls and are responsible for exchange of gases and nutrients between blood and tissues?
a) Arteries
b) Veins
c) Capillaries
d) Lymph vessels
Answer: c) Capillaries
The human heart has how many chambers?
a) 2
b) 3
c) 4
d) 5
Answer: c) 4
The upper chambers of the heart are called:
a) Ventricles
b) Atria
c) Septum
d) Coronary arteries
Answer: b) Atria
The lower chambers of the heart are called:
a) Ventricles
b) Atria
c) Septum
d) Coronary arteries
Answer: a) Ventricles
The valve located between the right atrium and the right ventricle is called:
a) Tricuspid valve
b) Bicuspid valve
c) Pulmonary valve
d) Aortic valve
Answer: a) Tricuspid valve
The valve located between the left atrium and the left ventricle is called:
a) Tricuspid valve
b) Bicuspid valve
c) Pulmonary valve
d) Aortic valve
Answer: b) Bicuspid valve
The largest artery in the human body is the:
a) Aorta
b) Coronary artery
c) Carotid artery
d) Femoral artery
Answer: a) Aorta
The smallest blood vessels in the human body are the:
a) Arteries
b) Veins
c) Capillaries
d) Lymph vessels
Answer: c) Capillaries
The blood vessels that carry deoxygenated blood from the body to the heart are called:
a) Arteries
b) Veins
c) Capillaries
d) Lymph vessels
Answer: b) Veins
The blood vessels that carry oxygenated blood from the lungs to the heart are called:
a) Arteries
b) Veins
c) Capillaries
d) Lymph vessels
Answer: b) Veins
Which of the following is responsible for regulating the heart rate?
a) SA node
b) AV node
c) Bundle of His
d) Purkinje fibers
Answer: a) SA node
The average resting heart rate for an adult is:
a) 60-70 beats per minute
b) 70-80 beats per minute
c) 80-90 beats per minute
d) 90-100 beats per minute
Answer: a) 60-70 beats per minute
The condition in which the blood pressure is consistently elevated above normal is known as:
a) Hypotension
b) Hypertension
c) Hypovolemia
d) Hyperglycemia
Answer: b) Hypertension
Which of the following is responsible for carrying oxygen in the blood?
a) Red blood cells
b) White blood cells
c) Platelets
d) Plasma
Answer: a) Red blood cells
Which of the following is responsible for fighting infections in the body?
a) Red blood cells
b) White blood cells
c) Platelets
d) Plasma
Answer: b) White blood cells
The process by which white blood cells move from the blood vessels into tissues to fight infections is known as:
a) Phagocytosis
b) Hemostasis
c) Inflammation
d) Diapedesis
Answer: d) Diapedesis