Carsyon 1 E Learning May
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Micro Leadership Academy
- 1.
Circulatory system consists of:
- A.
Heart
- B.
Blood
- C.
Blood vessels
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
The circulatory system consists of the heart, blood, and blood vessels. The heart pumps blood throughout the body, while the blood carries oxygen, nutrients, and hormones to different parts of the body. The blood vessels, including arteries, veins, and capillaries, transport the blood to and from the heart and various organs and tissues. Therefore, all of the given options are correct and are part of the circulatory system.Rate this question:
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- 2.
Basic functions of cardiovascular system are:
- A.
Supply oxygen to all cells
- B.
Supply nutrients to all cells
- C.
Remove waste product from all cells
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
The basic functions of the cardiovascular system include supplying oxygen to all cells, supplying nutrients to all cells, and removing waste products from all cells. These functions are essential for the overall functioning and survival of the body. Therefore, the correct answer is "All of the above."Rate this question:
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- 3.
Select wrong statement:
- A.
Arteries carry oxygenated blood
- B.
Veins carry de-oxygenated blood
- C.
Arteries bring blood to the heart
- D.
Arteries are strong and elastic than veins
Correct Answer
C. Arteries bring blood to the heartExplanation
Arteries carry oxygenated blood away from the heart to various parts of the body, while veins carry deoxygenated blood back to the heart. Therefore, the statement "Arteries bring blood to the heart" is incorrect.Rate this question:
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- 4.
Heart is surrounded by outer layer know as:
- A.
Epicardium
- B.
Myocardium
- C.
Pericardium
- D.
Endocardium
Correct Answer
C. PericardiumExplanation
The correct answer is Pericardium. The pericardium is the outer layer that surrounds the heart. It is a double-layered sac made up of a fibrous outer layer and a serous inner layer. The pericardium helps protect the heart and keeps it in place within the chest cavity. It also contains a small amount of fluid that acts as a lubricant, allowing the heart to beat smoothly and without friction.Rate this question:
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- 5.
Right part of the heart is filled with
- A.
Oxygenated blood
- B.
De-oxygenated blood
- C.
Right upper part with oxygenated blood
- D.
Right lower part with de-oxygenated blood
Correct Answer
B. De-oxygenated bloodExplanation
The right part of the heart is filled with de-oxygenated blood. This is because the right atrium receives blood from the body, which has already been used by the tissues and is low in oxygen. The blood then flows into the right ventricle, which pumps it to the lungs for oxygenation. Therefore, the right side of the heart deals with de-oxygenated blood.Rate this question:
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- 6.
Please select odd one
- A.
Right ventricle- Oxygenated blood
- B.
Left ventricle – Oxygenated blood
- C.
Right atria-Deoxygenated blood
- D.
Left atria- Oxygenated blood
Correct Answer
A. Right ventricle- Oxygenated bloodExplanation
The given answer is incorrect. The right ventricle is responsible for pumping deoxygenated blood to the lungs to be oxygenated. It receives blood from the right atrium and pumps it into the pulmonary artery. The left ventricle, on the other hand, pumps oxygenated blood to the rest of the body through the aorta. The right atrium receives deoxygenated blood from the body and the left atrium receives oxygenated blood from the lungs.Rate this question:
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- 7.
How many valves are present in the heart?
- A.
Two
- B.
Three
- C.
Four
- D.
Five
Correct Answer
C. FourExplanation
The heart has four valves: the tricuspid valve, the pulmonary valve, the mitral valve, and the aortic valve. These valves ensure that blood flows in one direction through the heart, preventing any backward flow. The tricuspid and mitral valves are located between the atria and ventricles, while the pulmonary and aortic valves are found at the exits of the right ventricle and left ventricle, respectively.Rate this question:
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- 8.
The valve present between right atria and right ventricle is:
- A.
Tricuspid valve
- B.
Bicuspid valve or mitral valve
- C.
Aortic valve
- D.
Pulmonary valve
Correct Answer
A. Tricuspid valveExplanation
The tricuspid valve is the correct answer because it is the valve located between the right atrium and right ventricle of the heart. It consists of three leaflets or cusps that open and close to regulate blood flow from the atrium to the ventricle. This valve prevents the backflow of blood into the atrium when the ventricle contracts, ensuring that blood flows in the correct direction through the heart.Rate this question:
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- 9.
The valve present between left atria and left ventricle is:
- A.
Tricuspid valve
- B.
Monthly Report
- C.
Aortic valve
- D.
Pulmonary valve
Correct Answer
B. Monthly Report -
- 10.
Main function of valves is:
- A.
To separate oxygenate blood with deoxygenated blood
- B.
To prevent back flow
- C.
To reduce heart pressure
- D.
None of the above
Correct Answer
B. To prevent back flowExplanation
Valves in the circulatory system prevent backflow of blood. When the heart contracts, the valves open to allow blood to flow forward, and when the heart relaxes, the valves close to prevent blood from flowing backward. This ensures that blood moves in one direction, preventing any regurgitation or backflow.Rate this question:
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- 11.
Heart rate depends upon:
- A.
Stress
- B.
Physical demand
- C.
Hormone
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
Heart rate is influenced by various factors, including stress, physical demand, and hormones. Stress can cause an increase in heart rate as the body prepares for a fight-or-flight response. Physical demand, such as exercise or physical activity, also leads to an elevated heart rate to meet the increased oxygen demand. Hormones, such as adrenaline, can stimulate the heart to beat faster. Therefore, all of these factors play a role in determining heart rate.Rate this question:
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- 12.
Coronary artery supply blood to the:
- A.
Kidney
- B.
Brain
- C.
Lungs
- D.
None of the above
Correct Answer
D. None of the aboveExplanation
Coronary arteries supply blood to the heart muscle itself. These arteries branch off from the aorta and provide oxygenated blood to the heart, ensuring that it receives the necessary nutrients and oxygen to function properly. The kidneys, brain, and lungs have their own separate blood supply systems and are not directly supplied by the coronary arteries.Rate this question:
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- 13.
How many times heart beats in a minute?
- A.
100 times
- B.
60-80 times
- C.
50 to 100 times
- D.
None of the above
Correct Answer
B. 60-80 timesExplanation
The correct answer is 60-80 times because the average resting heart rate for adults is typically between 60 and 80 beats per minute. This can vary depending on factors such as age, fitness level, and overall health. However, it is important to note that heart rate can increase during physical activity or in response to stress or illness.Rate this question:
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- 14.
Electrical signal responsible for heart beat is generated by
- A.
SA node
- B.
AV Node
- C.
Heart muscle
- D.
Right atria
Correct Answer
A. SA nodeExplanation
The electrical signal responsible for the heartbeat is generated by the SA node. The SA node, also known as the sinoatrial node, is a small cluster of specialized cells located in the right atrium of the heart. It acts as the natural pacemaker of the heart, initiating the electrical impulses that regulate the heart's rhythm. These impulses then spread through the atria, causing them to contract and pump blood into the ventricles. From there, the electrical signal is conducted to the AV node and then to the rest of the heart muscle, coordinating the contraction and relaxation of the heart chambers, resulting in a heartbeat.Rate this question:
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- 15.
Please select odd one
- A.
Human heart has four chambers
- B.
Right atria filled with deoxygenated blood
- C.
Left atria is filled with oxygenated blood
- D.
Aorta carries deoxygenated blood
Correct Answer
D. Aorta carries deoxygenated bloodExplanation
The given statement is incorrect because the aorta carries oxygenated blood. The aorta is the largest artery in the body and it receives oxygenated blood from the left ventricle of the heart and distributes it to the rest of the body.Rate this question:
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- 16.
Pulmonary valve controls blood flow from
- A.
Right atria to right ventricle
- B.
Left atria to left ventricle
- C.
Right ventricle to pulmonary artery
- D.
Lung to pulmonary vein
Correct Answer
C. Right ventricle to pulmonary arteryExplanation
The pulmonary valve is responsible for controlling blood flow from the right ventricle to the pulmonary artery. This valve prevents the backflow of blood into the right ventricle when it contracts and helps to direct oxygen-poor blood to the lungs for oxygenation.Rate this question:
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- 17.
Aortic valve controls blood flow from
- A.
Right atria to right ventricle
- B.
Left ventricle to aorta
- C.
Right ventricle to pulmonary artery
- D.
Lung to pulmonary vein
Correct Answer
B. Left ventricle to aortaExplanation
The aortic valve controls the flow of blood from the left ventricle to the aorta. When the left ventricle contracts, the aortic valve opens, allowing oxygen-rich blood to be pumped out of the heart and into the aorta, which is the largest artery in the body. From there, the blood is distributed to the rest of the body's organs and tissues.Rate this question:
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- 18.
Arterioles are the branches of
- A.
Veins
- B.
Arteries
- C.
Both
- D.
None
Correct Answer
B. ArteriesExplanation
Arterioles are the branches of arteries. Arteries are blood vessels that carry oxygenated blood away from the heart to various parts of the body. Arterioles are smaller branches of arteries that help regulate blood flow and control blood pressure. They play a crucial role in directing blood to specific tissues and organs based on their needs. Therefore, the correct answer is arteries.Rate this question:
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- 19.
Left side of the heart is larger and more muscular because
- A.
It pumps blood to whole body
- B.
It stores more amount of blood
- C.
Both
- D.
None
Correct Answer
A. It pumps blood to whole bodyExplanation
The left side of the heart is larger and more muscular because it pumps blood to the entire body. The left ventricle, which is the main pumping chamber of the left side, has thicker walls and more muscle fibers compared to the right ventricle. This is necessary to generate enough force to push oxygenated blood out to all the organs and tissues of the body.Rate this question:
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- 20.
Natural pacemaker is:
- A.
AV node
- B.
SA node
- C.
Heart muscle
- D.
All
Correct Answer
B. SA nodeExplanation
The SA (sinoatrial) node is known as the natural pacemaker of the heart. It is responsible for initiating the electrical impulses that regulate the heart's rhythm and coordinate its contractions. Located in the right atrium, the SA node generates these electrical signals, which then spread throughout the heart, causing it to contract and pump blood. The other options listed, such as the AV node and heart muscle, are involved in the heart's electrical conduction system but do not serve as the primary pacemaker.Rate this question:
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- 21.
Oxygenation of blood takes place in
- A.
Heart
- B.
Kindly
- C.
Lungs
- D.
Liver
Correct Answer
C. LungsExplanation
Oxygenation of blood takes place in the lungs. The lungs are responsible for the exchange of gases, where oxygen from the inhaled air is taken up by the red blood cells and carbon dioxide is released. This process occurs in the alveoli, small air sacs in the lungs, where oxygen diffuses into the bloodstream and carbon dioxide diffuses out. The heart pumps the oxygenated blood to the rest of the body, but the actual oxygenation of blood occurs in the lungs. The liver has various other functions, but it is not involved in the oxygenation of blood.Rate this question:
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- 22.
Blood vessels responsible for supply of blood to the heart muscle is
- A.
Carotid artery
- B.
Pulmonary artery
- C.
Coronary artery
- D.
None of the above
Correct Answer
C. Coronary arteryExplanation
The coronary artery is responsible for supplying blood to the heart muscle. It is a network of blood vessels that branch off from the aorta and wrap around the heart, providing oxygen and nutrients to the heart muscle cells. The carotid artery supplies blood to the head and neck, while the pulmonary artery carries deoxygenated blood from the heart to the lungs. Therefore, neither the carotid artery nor the pulmonary artery are responsible for supplying blood to the heart muscle. None of the above options are correct except for the coronary artery.Rate this question:
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- 23.
What is the main function of heart?
- A.
Oxygenation of blood
- B.
Purification of blood
- C.
Pumping of blood
- D.
Storage of blood
Correct Answer
C. Pumping of bloodExplanation
The main function of the heart is to pump blood throughout the body. It acts as a muscular pump that contracts and relaxes to circulate blood, ensuring that oxygen and nutrients are delivered to all cells and organs. The heart's pumping action is essential for maintaining blood flow and supporting overall bodily functions.Rate this question:
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- 24.
What is the main function of blood in cardiovascular system?
- A.
To supply oxygen to all cells
- B.
To supply nutrients to all cells
- C.
To remove waste product from all cells
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
The main function of blood in the cardiovascular system is to perform all of the mentioned tasks. It supplies oxygen to all cells, ensuring their proper functioning. It also supplies nutrients to the cells, providing them with the necessary energy and resources. Additionally, blood helps remove waste products from the cells, ensuring that they do not accumulate and cause harm to the body. Therefore, the correct answer is "All of the above."Rate this question:
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- 25.
Select odd one from the options
- A.
Artery carries oxygenated blood from heart to all body parts
- B.
Veins collect deoxygenated blood from different body parts
- C.
Heart has four chambers
- D.
Aorta attached to right ventricle
Correct Answer
D. Aorta attached to right ventricle -
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