Circulatory & Excretory System MCQ Quiz – Part 1
Quiz-summary
0 of 25 questions completed
Questions:
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
Information
This Digestive & Respiratory System MCQ Quiz helps aspirants revise important concepts related to the structure and functions of the human digestive and respiratory systems, which are frequently asked in competitive exams. Regular practice of these MCQs improves conceptual understanding and helps candidates answer biology questions quickly and accurately.
GK Series – Biology – Circulatory & Excretory System MCQ Quiz |
|
| Subject | Biology |
| Chapter | Circulatory & Excretory System |
| Part | 1 |
| Questions | 25 |
Who Should Attempt This Circulatory & Excretory System MCQ Quiz?
This Digestive & Respiratory System MCQ Quiz is useful for aspirants preparing for SSC, Railways, Banking, Defence, and other government job exams, where basic biology questions are commonly asked in the General Knowledge section.
Topics Covered in This Circulatory & Excretory System MCQ Quiz
This quiz includes MCQs based on important topics such as organs of the digestive system, digestion and absorption of food, structure and functions of the respiratory system, breathing mechanism, and gas exchange, along with other fundamental concepts related to human digestion and respiration.
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
Results
0 of 25 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 points, (0)
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- Answered
- Review
-
Question 1 of 25
1. Question
The human heart is approximately the size of a
Correct
➤ The human heart is a fist-sized muscular organ.
➤ It pumps blood throughout the body.Incorrect
➤ The human heart is a fist-sized muscular organ.
➤ It pumps blood throughout the body. -
Question 2 of 25
2. Question
The human heart has how many chambers?
Correct
➤ The human heart has four chambers.
➤ Two atria (upper) and two ventricles (lower).Incorrect
➤ The human heart has four chambers.
➤ Two atria (upper) and two ventricles (lower). -
Question 3 of 25
3. Question
The upper chambers of the heart are called
Correct
➤ The upper chambers are called atria (right and left).
➤ They receive blood entering the heart.Incorrect
➤ The upper chambers are called atria (right and left).
➤ They receive blood entering the heart. -
Question 4 of 25
4. Question
The lower chambers of the heart are called
Correct
➤ The lower chambers are ventricles.
➤ They pump blood out of the heart.Incorrect
➤ The lower chambers are ventricles.
➤ They pump blood out of the heart. -
Question 5 of 25
5. Question
The outermost layer of the heart is called
Correct
➤ Epicardium is the outermost layer of the heart wall.
➤ It protects the heart.Incorrect
➤ Epicardium is the outermost layer of the heart wall.
➤ It protects the heart. -
Question 6 of 25
6. Question
The middle muscular layer of the heart is called
Correct
➤ Myocardium is the thick muscular middle layer.
➤ It helps in contraction of the heart.Incorrect
➤ Myocardium is the thick muscular middle layer.
➤ It helps in contraction of the heart. -
Question 7 of 25
7. Question
The innermost layer of the heart is called
Correct
➤ Endocardium is the inner lining of the heart chambers.
➤ It ensures smooth blood flow inside the heart.Incorrect
➤ Endocardium is the inner lining of the heart chambers.
➤ It ensures smooth blood flow inside the heart. -
Question 8 of 25
8. Question
The partition that separates the right and left sides of the heart is called
Correct
➤ Septum separates the right and left halves of the heart.
➤ It prevents mixing of oxygenated and deoxygenated blood.Incorrect
➤ Septum separates the right and left halves of the heart.
➤ It prevents mixing of oxygenated and deoxygenated blood. -
Question 9 of 25
9. Question
The normal heart rate of a healthy adult is about
Correct
➤ Normal heart rate is around 72 beats per minute.
➤ It may vary slightly depending on health and activity.Incorrect
➤ Normal heart rate is around 72 beats per minute.
➤ It may vary slightly depending on health and activity. -
Question 10 of 25
10. Question
The rhythmic contraction and relaxation of the heart is called
Correct
➤ Heartbeat includes systole (contraction) and diastole (relaxation).
➤ It ensures continuous blood flow in the body.Incorrect
➤ Heartbeat includes systole (contraction) and diastole (relaxation).
➤ It ensures continuous blood flow in the body. -
Question 11 of 25
11. Question
The “Lub” sound of the heart is produced due to the closing of
Correct
➤ “Lub” sound is produced by closing of mitral and tricuspid valves.
➤ It marks the beginning of ventricular contraction (systole).Incorrect
➤ “Lub” sound is produced by closing of mitral and tricuspid valves.
➤ It marks the beginning of ventricular contraction (systole). -
Question 12 of 25
12. Question
The “Dub” sound of the heart is produced due to the closing of
Correct
➤ “Dub” sound is produced by closing of aortic and pulmonary valves.
➤ It indicates ventricular relaxation (diastole).Incorrect
➤ “Dub” sound is produced by closing of aortic and pulmonary valves.
➤ It indicates ventricular relaxation (diastole). -
Question 13 of 25
13. Question
Cardiac output is defined as
Correct
➤ Cardiac output is the volume of blood pumped by the heart per minute.
➤ Normal value is about 5 liters per minute.Incorrect
➤ Cardiac output is the volume of blood pumped by the heart per minute.
➤ Normal value is about 5 liters per minute. -
Question 14 of 25
14. Question
Which instrument is used to measure blood pressure?
Correct
➤ Sphygmomanometer is used to measure blood pressure.
➤ It measures systolic and diastolic pressure.Incorrect
➤ Sphygmomanometer is used to measure blood pressure.
➤ It measures systolic and diastolic pressure. -
Question 15 of 25
15. Question
An electrocardiogram (ECG) records
Correct
➤ ECG records electrical activity of the heart.
➤ It helps detect abnormal heart rhythms.Incorrect
➤ ECG records electrical activity of the heart.
➤ It helps detect abnormal heart rhythms. -
Question 16 of 25
16. Question
The right atrium receives deoxygenated blood from
Correct
➤ Right atrium receives blood through superior and inferior vena cava.
➤ This blood is deoxygenated.Incorrect
➤ Right atrium receives blood through superior and inferior vena cava.
➤ This blood is deoxygenated. -
Question 17 of 25
17. Question
The superior vena cava brings blood from
Correct
➤ Superior vena cava carries deoxygenated blood from the upper body.
➤ It empties into the right atrium.Incorrect
➤ Superior vena cava carries deoxygenated blood from the upper body.
➤ It empties into the right atrium. -
Question 18 of 25
18. Question
The inferior vena cava carries blood from
Correct
➤ Inferior vena cava brings blood from the lower parts of the body.
➤ It carries deoxygenated blood to the right atrium.Incorrect
➤ Inferior vena cava brings blood from the lower parts of the body.
➤ It carries deoxygenated blood to the right atrium. -
Question 19 of 25
19. Question
The right ventricle pumps blood to the
Correct
➤ Right ventricle pumps deoxygenated blood to the lungs.
➤ This occurs via the pulmonary artery.Incorrect
➤ Right ventricle pumps deoxygenated blood to the lungs.
➤ This occurs via the pulmonary artery. -
Question 20 of 25
20. Question
The valve between right atrium and right ventricle is
Correct
➤ Tricuspid valve lies between right atrium and right ventricle.
➤ It prevents backflow of blood.Incorrect
➤ Tricuspid valve lies between right atrium and right ventricle.
➤ It prevents backflow of blood. -
Question 21 of 25
21. Question
The pulmonary artery carries
Correct
➤ Pulmonary artery carries deoxygenated blood from heart to lungs.
➤ It is an exception among arteries.Incorrect
➤ Pulmonary artery carries deoxygenated blood from heart to lungs.
➤ It is an exception among arteries. -
Question 22 of 25
22. Question
The pulmonary vein carries
Correct
➤ Pulmonary vein carries oxygenated blood from lungs to heart.
➤ It is an exception among veins.Incorrect
➤ Pulmonary vein carries oxygenated blood from lungs to heart.
➤ It is an exception among veins. -
Question 23 of 25
23. Question
The left atrium receives blood from the
Correct
➤ Left atrium receives oxygenated blood from lungs.
➤ This blood comes via pulmonary veins.Incorrect
➤ Left atrium receives oxygenated blood from lungs.
➤ This blood comes via pulmonary veins. -
Question 24 of 25
24. Question
Blood flows from left atrium to left ventricle through
Correct
➤ Bicuspid (mitral) valve is present between left atrium and ventricle.
➤ It prevents backflow of blood.Incorrect
➤ Bicuspid (mitral) valve is present between left atrium and ventricle.
➤ It prevents backflow of blood. -
Question 25 of 25
25. Question
The left ventricle pumps blood into the
Correct
➤ Left ventricle pumps oxygenated blood into the aorta.
➤ This blood is supplied to the entire body.Incorrect
➤ Left ventricle pumps oxygenated blood into the aorta.
➤ This blood is supplied to the entire body.