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MCQ on Class 5 Circulatory System

Last updated on July 27th, 2023 at 09:56 pm

Circulatory System

Which organ system is responsible for transporting oxygen, nutrients, and waste products throughout the body?
a) Respiratory system
b) Nervous system
c) Circulatory system*
d) Digestive system

 

Which organ system is responsible for breaking down food and absorbing nutrients?
a) Respiratory system
b) Nervous system
c) Circulatory system
d) Digestive system*

 

Which organ system is responsible for coordinating and controlling body activities?
a) Respiratory system
b) Nervous system*
c) Circulatory system
d) Digestive system

 

Which organ system is responsible for the exchange of oxygen and carbon dioxide in the body?
a) Respiratory system*
b) Nervous system
c) Circulatory system
d) Digestive system

 

What is the main function of the circulatory system?
a) Digesting food
b) Carrying blood around the body*
c) Controlling body temperature
d) Transmitting nerve impulses

 

What are the three main components of the circulatory system?
a) Heart, lungs, and liver
b) Brain, arteries, and veins
c) Heart, blood, and blood vessels*
d) Kidneys, bladder, and urethra

 

Which organ is responsible for pumping blood to all parts of the body?
a) Lungs
b) Liver
c) Heart*
d) Kidneys

 

Which type of muscle is the heart made of?
a) Skeletal muscle
b) Smooth muscle
c) Cardiac muscle*
d) Striated muscle

 

How many chambers does the heart have?
a) One
b) Two
c) Three
d) Four*

 

What are the upper chambers of the heart called?
a) Ventricles
b) Atria*
c) Arteries
d) Valves

 

Which side of the chest cavity is the heart located?
a) Right side
b) Left side*
c) Middle

 

What is the purpose of the blood vessels in the circulatory system?
a) Carrying blood away from the heart
b) Carrying oxygen only
c) Carrying nutrients to the heart
d) Transporting blood throughout the body*

 

Which chambers of the heart receive blood?
a) Left atrium and left ventricle
b) Right atrium and right ventricle
c) Left atrium and right ventricle
d) Right atrium and left ventricle*

 

Which chambers of the heart pump blood away from the heart?
a) Left atrium and left ventricle
b) Right atrium and right ventricle
c) Left atrium and right ventricle
d) Right atrium and left ventricle*

 

How many times does the heart pump blood per minute?
a) 40 times
b) 60 times
c) 70 times*
d) 100 times

 

What is the purpose of arteries in circulation?
a) Receive blood from the heart
b) Carry blood back to the heart
c) Carry blood away from the heart*
d) Exchange oxygen and carbon dioxide

 

What causes the throbbing sensation known as pulse?
a) Blood clotting
b) Stretching and relaxing of arteries*
c) Heartbeat irregularities
d) Nerve impulses

 

Why is blood red in color?
a) It contains red blood cells
b) It reflects light as red
c) It contains a red pigment called hemoglobin*
d) It is oxygenated

 

How does blood flow in our body?
a) Only in the arteries
b) Only in the veins
c) Only in the capillaries
d) Throughout the arteries, veins, and capillaries*

 

What is the main function of blood in our body?
a) Carrying oxygen and nutrients
b) Regulating body temperature
c) Protecting against infections
d) All of the above*

 

Which component of blood is responsible for carrying oxygen?
a) Red blood cells*
b) White blood cells
c) Platelets
d) Plasma

 

Which organ is responsible for removing waste from the body through urine?
a) Liver
b) Lungs
c) Kidneys*
d) Heart

 

How do white blood cells in the blood protect the body?
a) By producing hormones
b) By carrying oxygen
c) By killing bacteria and germs*
d) By regulating body temperature

 

What are the three types of blood vessels?
a) Arteries, veins, and capillaries*
b) Lungs, liver, and kidneys
c) Atria, ventricles, and chambers
d) Red blood cells, white blood cells, and platelets

 

Which type of blood vessel carries blood away from the heart?
a) Veins
b) Capillaries
c) Arteries*
d) Atria

 

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