The Human Body: Circulatory System
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Structure and functions of the Heart
SubtopicStructure and functions of the Heart under The Human Body: Circulatory System for Grade 5 ICSE.
Preview questions (no answers)
- 1.
The pulse rate and the heart rate are generally:
A.The same
B.Very different
C.Opposite
D.Unrelated
- 2.
What is the purpose of the heart having four different chambers?
A.To store extra food
B.To keep oxygen-rich and carbon-dioxide-rich blood separate
C.To make the heart lighter
D.To help us breathe more air
- 3.
The heart ensures that blood flows in only ________ direction.
A.One
B.Two
C.Three
D.Four
- 4.
If you place your hand on your chest and feel a steady beat, you are feeling the:
A.Lungs breathing
B.Heart pumping
C.Stomach digesting
D.Bones growing
- 5.
Which of the following is NOT a part of the human heart's structure?
A.Ventricle
B.Atrium
C.Alveoli
D.Aorta
- 6.
How many times does an average healthy adult heart beat per minute while at rest?
A.to times
B.to times
C.to times
D.to times
- 7.
Which blood vessel has the thickest and most elastic walls to withstand high pressure from the heart?
A.Pulmonary Vein
B.Aorta
C.Vena Cava
D.Capillary
- 8.
As blood flows through the heart following the path shown in the diagram, it must pass through four specific valves that keep the blood moving in one direction. What is the correct sequence of these four valves as a red blood cell travels from the Right Atrium to the Aorta?
A.Tricuspid valve, Bicuspid valve, Pulmonary valve, Aortic valve
B.Tricuspid valve, Pulmonary valve, Bicuspid valve, Aortic valve
C.Bicuspid valve, Pulmonary valve, Tricuspid valve, Aortic valve
D.Pulmonary valve, Tricuspid valve, Aortic valve, Bicuspid valve
- 9.
Which chamber of the heart has to work against the highest resistance?
A.Right Atrium
B.Right Ventricle
C.Left Atrium
D.Left Ventricle
- 10.
What is the relationship between the pulse and the heartbeat?
A.The pulse is faster than the heartbeat
B.The heartbeat is the sound, and the pulse is the pressure wave in arteries
C.The pulse happens only in the heart, and the heartbeat happens in the wrist
D.There is no relationship between them
Download the worksheet for The Human Body: Circulatory System - Structure and functions of the Heart to practice offline. It includes additional chapter-level practice questions.
Blood and its components
SubtopicBlood and its components under The Human Body: Circulatory System for Grade 5 ICSE.
Preview questions (no answers)
- 1.
Which component of blood is mostly involved in the transport of carbon dioxide back to the lungs?
A.Platelets
B.White blood cells
C.Plasma and Red blood cells
D.Muscle cells
- 2.
Which of the following is true about white blood cells?
A.They are more numerous than red blood cells
B.They help the body fight infections
C.They are red in color
D.They carry oxygen to the brain
- 3.
What is the primary role of platelets in the blood?
A.To carry oxygen
B.To fight viruses
C.To help the blood clot
D.To give blood its red color
- 4.
Why is it important for blood to circulate constantly?
A.To keep the body from sleeping
B.To ensure every cell gets oxygen and nutrients
C.To make sure we stay the same height
D.To help us digest food faster
- 5.
In the human circulatory system, our blood group (A, B, AB, or O) is determined by specific markers found on the surface of one of the blood components. Study the diagram and identify which component 'Component X' represents.
A.White Blood Cells
B.Red Blood Cells
C.Platelets
D.Plasma
- 6.
What is the main reason why Red Blood Cells are shaped like a disc that is thinner in the middle?
A.To swim faster in the blood
B.To provide a large surface area for absorbing oxygen
C.To look different from white blood cells
D.To store extra fat
- 7.
Which of these substances is NOT found dissolved in the blood plasma?
A.Proteins
B.Sugar
C.Enzymes
D.Large pieces of undigested food
- 8.
Why is it important for the blood to be slightly alkaline (basic) rather than acidic?
A.To prevent the blood from turning into a solid
B.To allow enzymes and blood cells to function properly
C.To keep the blood tasting salty
D.To help the heart pump faster
- 9.
Which of the following nutrients, carried by plasma, is the primary source of energy for the body's cells?
A.Amino acids
B.Glucose
C.Fatty acids
D.Vitamins
- 10.
If we remove all the cells and the clotting factors from the blood, the remaining liquid is called:
A.Plasma
B.Serum
C.Lymph
D.Water
Download the worksheet for The Human Body: Circulatory System - Blood and its components to practice offline. It includes additional chapter-level practice questions.
Types of Blood Vessels (Arteries, Veins, Capillaries)
SubtopicTypes of Blood Vessels (Arteries, Veins, Capillaries) under The Human Body: Circulatory System for Grade 5 ICSE.
Preview questions (no answers)
- 1.
Which of these vessels carries blood from the heart to the brain?
A.Carotid Artery
B.Jugular Vein
C.Vena Cava
D.Capillary
- 2.
If a blood vessel has a very small diameter and very thin walls, it is a:
A.Vein
B.Artery
C.Capillary
D.Valve
- 3.
Which vessel carries blood away from the liver towards the heart?
A.Hepatic Artery
B.Hepatic Vein
C.Aorta
D.Pulmonary Artery
- 4.
Which vessel type allows the blood to release heat to the skin surface?
A.Aorta
B.Capillaries
C.Main Arteries
D.Deep Veins
- 5.
Which vessel receives blood directly from the left ventricle?
A.Pulmonary Vein
B.Aorta
C.Superior Vena Cava
D.Arteriole
- 6.
Which of these vessels is part of the 'micro-circulation'?
A.Aorta
B.Vena Cava
C.Capillary
D.Pulmonary Artery
- 7.
If a blood vessel is described as having a narrow lumen and carrying blood away from the heart, it is most likely an ________.
A.Artery
B.Vein
C.Capillary
D.Venule
- 8.
Why can nutrients like glucose pass through capillary walls but not through artery walls?
A.Artery walls are too thick and have multiple layers of muscle and tissue
B.Capillaries have special pumps that pull glucose out
C.Arteries carry oxygen which blocks glucose
D.Glucose is only found in the blood when it reaches the veins
- 9.
How does the cross-sectional area of a vein compare to the artery that runs parallel to it?
A.The artery is always much larger in diameter
B.The vein usually has a larger lumen and cross-sectional area
C.They are always exactly the same to keep blood volume equal
D.The capillary between them is larger than both
- 10.
Which of these is the correct functional sequence for the circulatory system?
A.Distribution (Arteries) -> Exchange (Capillaries) -> Collection (Veins)
B.Collection (Arteries) -> Exchange (Capillaries) -> Distribution (Veins)
C.Exchange (Arteries) -> Distribution (Capillaries) -> Collection (Veins)
D.Distribution (Veins) -> Exchange (Capillaries) -> Collection (Arteries)
Download the worksheet for The Human Body: Circulatory System - Types of Blood Vessels (Arteries, Veins, Capillaries) to practice offline. It includes additional chapter-level practice questions.
Process of Blood Circulation
SubtopicProcess of Blood Circulation under The Human Body: Circulatory System for Grade 5 ICSE.
Preview questions (no answers)
- 1.
What is 'Deoxygenated Blood'?
A.Blood with lots of oxygen
B.Blood that is rich in carbon dioxide
C.Blood that is white
D.Blood that is purple
- 2.
What is 'Oxygenated Blood'?
A.Blood with no oxygen
B.Blood that is rich in oxygen
C.Blood that is blue
D.Blood that is yellow
- 3.
Which type of blood vessel has thick, elastic walls to handle high pressure?
A.Arteries
B.Veins
C.Capillaries
D.Venules
- 4.
The pulse rate of a person is usually ______ the heart rate.
A.Higher than
B.Lower than
C.The same as
D.Double
- 5.
The human circulatory system is known as a 'double circulation' because blood travels through the heart twice in one complete journey. According to the diagram, which sequence correctly shows the flow of blood through the pulmonary loop first and then the systemic loop?
A.1 3 4 2
B.4 2 3 1
C.1 2 3 4
D.3 4 1 2
- 6.
Red blood cells are produced in the ____.
A.Heart
B.Liver
C.Bone marrow
D.Spleen
- 7.
Which of the following is NOT a component of the human circulatory system?
A.Heart
B.Blood
C.Lungs
D.Blood vessels
- 8.
Which of these describes a complete cycle of blood through the heart?
A.Right Atrium -> Right Ventricle -> Lungs -> Left Atrium -> Left Ventricle -> Body
B.Left Atrium -> Left Ventricle -> Lungs -> Right Atrium -> Right Ventricle -> Body
C.Right Atrium -> Left Atrium -> Right Ventricle -> Left Ventricle -> Lungs
D.Body -> Aorta -> Left Ventricle -> Left Atrium -> Lungs
- 9.
What prevents the mixing of blood between the Left Ventricle and the Right Ventricle?
A.The Pericardium
B.The Interventricular Septum
C.The Bicuspid Valve
D.The Pulmonary Artery
- 10.
Which part of the heart is the first to receive deoxygenated blood from the Superior Vena Cava?
A.Right Ventricle
B.Right Atrium
C.Left Atrium
D.Left Ventricle
Download the worksheet for The Human Body: Circulatory System - Process of Blood Circulation to practice offline. It includes additional chapter-level practice questions.