Clinical Cardiovascular System Quiz
Quiz Description
- 1.
Which pathology relates to the heart rate being less than 50 beats per minute?
- A.
Angina
- B.
Bradycardia
- C.
Tachycardia
- D.
Palpitations
Correct Answer
B. BradycardiaExplanation
Bradycardia is a pathology that relates to the heart rate being less than 50 beats per minute. It is a condition where the heart beats at a slower rate than normal, which can lead to symptoms such as fatigue, dizziness, and fainting. This can be caused by various factors, including certain medications, heart diseases, and abnormalities in the heart's electrical system. Treatment options for bradycardia may include medication, pacemaker implantation, or addressing the underlying cause of the condition.Rate this question:
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- 2.
The largest circulatory system which carries oxygnated blood from the left ventricle and through the aorta to the body, is referred to as what type of circulation?
- A.
Systemic
- B.
Pulmonary
- C.
Coronary
- D.
Hepatic
Correct Answer
A. SystemicExplanation
The largest circulatory system that carries oxygenated blood from the left ventricle and through the aorta to the body is referred to as systemic circulation. This circulation is responsible for delivering oxygen and nutrients to all the tissues and organs in the body, while also removing waste products.Rate this question:
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- 3.
The prefix angio refers to ___.
- A.
Artery
- B.
Blood
- C.
Heart cavity
- D.
Vessel
Correct Answer
D. VesselExplanation
The prefix "angio" is derived from the Greek word "angeion" which means "vessel". In medical terminology, the prefix "angio" is commonly used to refer to blood vessels, such as arteries, veins, and capillaries. Therefore, the correct answer is "vessel".Rate this question:
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- 4.
The prefix cardio refers to ____.
- A.
Veins
- B.
Heart
- C.
Blood clot
- D.
Blood
- E.
Lung
Correct Answer
B. HeartExplanation
The prefix "cardio" is derived from the Greek word "kardia," which means "heart." Therefore, when we encounter the prefix "cardio" in medical terms, it usually refers to something related to the heart.Rate this question:
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- 5.
The prefix hema or hemo refers to ___.
- A.
Vein
- B.
Artery
- C.
Heart cavity
- D.
Blood
- E.
Liver
Correct Answer
D. BloodExplanation
The prefix "hema" or "hemo" is commonly used in medical terminology to refer to blood. It is derived from the Greek word "haima" which means blood. This prefix is often used in words related to blood components, diseases, and medical procedures involving blood. Therefore, the correct answer is blood.Rate this question:
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- 6.
The prefix phleb refers to ___.
- A.
Vein
- B.
Blood
- C.
Artery
- D.
Heart
- E.
Lung
Correct Answer
A. VeinExplanation
The prefix "phleb" is derived from the Greek word "phlebos" which means vein. Therefore, the correct answer is vein.Rate this question:
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- 7.
The prefix thrombo refers to ___.
- A.
Blood clot
- B.
Varicose vein
- C.
Vessel obstruction
- D.
Main artery
Correct Answer
A. Blood clotExplanation
The prefix "thrombo" is derived from the Greek word "thrombos," which means blood clot. Therefore, when we encounter the prefix "thrombo" in medical terminology, it usually indicates a relation to blood clotting or blood clots. This association is consistent with the correct answer, "blood clot."Rate this question:
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- 8.
The prefix vaso refers to ___.
- A.
Lung
- B.
Blood vessel
- C.
Clot
- D.
Vein
- E.
Artery
Correct Answer
B. Blood vesselExplanation
The prefix "vaso" is commonly used in medical terminology to refer to blood vessels. It is derived from the Latin word "vas" which means vessel. Therefore, the correct answer is blood vessel.Rate this question:
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- 9.
The prefix vena refers to ___.
- A.
Vein
- B.
Artery
- C.
Heart
- D.
Clot
Correct Answer
A. VeinExplanation
The prefix "vena" is derived from the Latin word for "vein." Therefore, it refers to veins, which are blood vessels that carry deoxygenated blood back to the heart.Rate this question:
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- 10.
The prefix ventricu refers to ___.
- A.
Blood clot
- B.
Valve
- C.
Heart cavity
- D.
Main artery
- E.
Lung
Correct Answer
C. Heart cavityExplanation
The prefix "ventricu" is derived from the Latin word "ventriculus" which means "a small cavity." In medical terminology, it is used to refer to the heart cavities, specifically the two lower chambers of the heart called the ventricles. These ventricles are responsible for pumping blood to the lungs and the rest of the body. Therefore, the correct answer is "heart cavity."Rate this question:
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- 11.
How many chambers are in the human heart?
- A.
3
- B.
7
- C.
2
- D.
4
Correct Answer
D. 4Explanation
The correct answer is 4 because the human heart has four chambers: two atria and two ventricles. The atria receive blood from the body and lungs, while the ventricles pump blood out to the body and lungs. This division of chambers allows for efficient circulation of oxygenated and deoxygenated blood throughout the body.Rate this question:
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- 12.
Approximately how many times a day does your heart beat?
- A.
1,000,000
- B.
50,000
- C.
250,000
- D.
100,000
Correct Answer
D. 100,000Explanation
The average adult heart beats around 60 to 100 times per minute at rest. This means that in a day, the heart beats approximately 86,400 to 144,000 times. Therefore, the closest option to this range is 100,000, making it the correct answer.Rate this question:
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- 13.
The smooth layer of cells that line the inside of the heart are called what?
- A.
Myocardium
- B.
Endocardium
- C.
Pericardium
- D.
Pseudocardium
Correct Answer
B. EndocardiumExplanation
The smooth layer of cells that line the inside of the heart is called the endocardium. It is responsible for providing a protective lining for the heart chambers and valves, ensuring smooth blood flow and preventing clot formation. The endocardium also plays a role in regulating the contraction and relaxation of the heart muscle. Unlike the myocardium, which is the muscular middle layer of the heart, the endocardium is composed of a thin layer of endothelial cells. The pericardium is the outermost layer of the heart, while pseudocardium is not a recognized term in anatomy.Rate this question:
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- 14.
What is the term for the muscular middle layer of the heart?
- A.
Pericardium
- B.
Endocardium
- C.
Myocardium
- D.
Pseudocardium
Correct Answer
C. MyocardiumExplanation
The term for the muscular middle layer of the heart is the myocardium. It is responsible for the contraction and relaxation of the heart, allowing it to pump blood throughout the body. The myocardium is composed of specialized cardiac muscle cells that are capable of generating and conducting electrical impulses, ensuring the coordinated contraction of the heart chambers.Rate this question:
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- 15.
What is the term for the double-layered membrane, or sac, that covers the outside of the heart?
- A.
Endocardium
- B.
Pericardium
- C.
Myocardium
- D.
Pseudocardium
Correct Answer
B. PericardiumExplanation
The term for the double-layered membrane, or sac, that covers the outside of the heart is called the pericardium. The pericardium provides protection and support to the heart, preventing it from rubbing against other organs or structures in the chest cavity. It also helps to contain and lubricate the heart, allowing it to beat smoothly within the chest.Rate this question:
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- 16.
The vessels that carry blood away from the heart are called what?
- A.
Capillaries
- B.
Veins
- C.
Arteries
- D.
All of the answer choices
Correct Answer
C. ArteriesExplanation
Arteries are the blood vessels that carry blood away from the heart. They have thick, elastic walls that allow them to withstand the high pressure of blood being pumped by the heart. Arteries branch out into smaller vessels called arterioles, which eventually lead to capillaries where oxygen and nutrients are exchanged with tissues. Veins, on the other hand, carry blood back to the heart, while capillaries are the smallest blood vessels where the exchange of substances between blood and tissues occurs. Therefore, arteries are the correct answer in this case.Rate this question:
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- 17.
Vessels that connect arterioles and venules are called what?
- A.
Capillaries
- B.
Thrombocytes
- C.
Leukocytes
- D.
Alveoli
- E.
Erythrocytes
Correct Answer
A. CapillariesExplanation
Capillaries are the vessels that connect arterioles and venules. They are the smallest blood vessels in the body and play a crucial role in the exchange of oxygen, nutrients, and waste products between the blood and the surrounding tissues. Capillaries have thin walls that allow for easy diffusion of substances, making them essential for maintaining proper circulation and delivering oxygen to all cells in the body.Rate this question:
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- 18.
What is the name of the upper right chamber of the heart?
- A.
Right ventricle
- B.
Right septum
- C.
Right atrium
- D.
Right subclavian
Correct Answer
C. Right atriumExplanation
The name of the upper right chamber of the heart is the right atrium. It receives deoxygenated blood from the body through the superior and inferior vena cava and then pumps it into the right ventricle.Rate this question:
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- 19.
What is the name of the valve located between the right ventricle and the pulmonary artery?
- A.
Pulmonary valve
- B.
Mitral valve
- C.
Tricuspid valve
- D.
Aortic valve
Correct Answer
A. Pulmonary valveExplanation
The correct answer is the pulmonary valve. The pulmonary valve is located between the right ventricle and the pulmonary artery. It controls the flow of blood from the right ventricle to the pulmonary artery, allowing blood to be pumped to the lungs for oxygenation.Rate this question:
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- 20.
What is the lower right chamber of the heart called?
- A.
Right septum
- B.
Right ventricle
- C.
Right atrium
- D.
Right subclavian
Correct Answer
B. Right ventricleExplanation
The lower right chamber of the heart is called the right ventricle. It is responsible for pumping oxygen-depleted blood to the lungs to be oxygenated. The right ventricle receives blood from the right atrium and contracts to push the blood out through the pulmonary artery. The right septum, right atrium, and right subclavian are not correct answers as they do not refer to the specific chamber in question.Rate this question:
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- 21.
What is the left upper chamber of the heart called?
- A.
Left septum
- B.
Left ventricle
- C.
Left atrium
- D.
Left subclavian
Correct Answer
C. Left atriumExplanation
The left upper chamber of the heart is called the left atrium. It receives oxygenated blood from the lungs and pumps it into the left ventricle, which then pumps the blood to the rest of the body. The left atrium is an important part of the heart's structure and function in maintaining circulation.Rate this question:
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- 22.
What is the left lower chamber of the heart called?
- A.
Left septum
- B.
Left ventricle
- C.
Left atrium
- D.
Left subclavian
Correct Answer
B. Left ventricleExplanation
The left lower chamber of the heart is called the left ventricle. It is responsible for pumping oxygenated blood to the rest of the body. The left ventricle is the largest and strongest chamber of the heart, as it needs to generate enough force to push blood throughout the body's systemic circulation.Rate this question:
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- 23.
What is the valve located between the right atrium and the right ventricle called?
- A.
Mitral valve
- B.
Tricuspid Valve
- C.
Aortic valve
- D.
Pulmonary valve
Correct Answer
B. Tricuspid ValveExplanation
The valve located between the right atrium and the right ventricle is called the tricuspid valve. This valve consists of three leaflets and prevents the backflow of blood from the right ventricle to the right atrium during ventricular contraction. It opens during atrial contraction to allow blood to flow into the right ventricle and closes during ventricular contraction to prevent regurgitation. The tricuspid valve is essential for maintaining the proper flow of blood through the heart.Rate this question:
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- 24.
What is the name of the vessels that carry blood back to the heart?
- A.
Veins
- B.
Arteries
- C.
Capillaries
- D.
Aorta
Correct Answer
A. VeinsExplanation
Veins are the correct answer because they are the blood vessels that carry blood back to the heart. After oxygen has been delivered to the body's tissues, the deoxygenated blood is collected by the veins and transported back to the heart. Veins have valves that prevent the backward flow of blood and help in the efficient return of blood to the heart.Rate this question:
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- 25.
What is the valve located between the left ventricle and the aorta called?
- A.
Mitral valve
- B.
Pulmonary valve
- C.
Aortic valve
- D.
Tricuspid valve
Correct Answer
C. Aortic valveExplanation
The valve located between the left ventricle and the aorta is called the aortic valve. This valve allows blood to flow from the left ventricle into the aorta, which is the main artery that carries oxygenated blood to the rest of the body. The aortic valve opens and closes to ensure that blood flows in one direction, preventing any backflow into the left ventricle.Rate this question:
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- 26.
What type of tissue in the heart is primarily responsible for pumping blood throughout the body?
- A.
Muscle tissue
- B.
Epithelial tissue
- C.
Connective tissue
- D.
Nervous tissue
Correct Answer
A. Muscle tissueExplanation
Muscle tissue is primarily responsible for pumping blood throughout the body. The heart is made up of cardiac muscle tissue, which contracts and relaxes to pump blood. This type of muscle tissue is specialized and has the ability to generate its own electrical impulses, allowing it to contract rhythmically and pump blood effectively. Epithelial tissue covers and protects the surfaces of organs, connective tissue supports and connects different structures, and nervous tissue transmits signals throughout the body. However, it is the muscle tissue in the heart that is specifically designed for the pumping action required to circulate blood.Rate this question:
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- 27.
How does pulmonary circulation differ from coronary circulation?
- A.
Coronary circulation occurs throughout the body; pulmonary circulation occurs in the heart
- B.
Coronary circulation occurs in the brain; pulmonary circulation occurs in the lungs
- C.
Coronary circulation occurs in the heart; pulmonary circulation occurs in the heart and lungs
- D.
Coronary circulation involves oxygenated blood only; pulmonary circulation involves deoxygenated blood only
Correct Answer
C. Coronary circulation occurs in the heart; pulmonary circulation occurs in the heart and lungsExplanation
The correct answer is that coronary circulation occurs in the heart, while pulmonary circulation occurs in the heart and lungs. Coronary circulation refers to the circulation of blood within the heart itself, supplying oxygen and nutrients to the cardiac muscle. On the other hand, pulmonary circulation involves the flow of blood between the heart and the lungs, where oxygen is added to the blood and carbon dioxide is removed. Therefore, the key difference between the two is the involvement of the lungs in pulmonary circulation.Rate this question:
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- 28.
This is an abnormal rhythm or rate of the heartbeat.
- A.
Dysrhythmias
- B.
Hypertension
- C.
Coronary heart disease
- D.
Peripheral artery disease
Correct Answer
A. DysrhythmiasExplanation
Dysrhythmias refer to abnormal rhythms or rates of the heartbeat. This can include irregular heartbeats, fast heartbeats (tachycardia), or slow heartbeats (bradycardia). Hypertension, coronary heart disease, and peripheral artery disease are all conditions that can affect the heart, but they do not specifically refer to abnormal heart rhythms. Therefore, the correct answer is dysrhythmias.Rate this question:
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- 29.
This is the most common form of heart disease and is caused by plaque build up inside the arteries, which restricts blood flow.
- A.
Peripheral heart disease
- B.
Coronary heart disease
- C.
Dysrhythmias
- D.
Hypertension
Correct Answer
B. Coronary heart diseaseExplanation
Coronary heart disease is the most common form of heart disease and is caused by plaque build up inside the arteries, which restricts blood flow. Plaque is made up of cholesterol, fat, calcium, and other substances found in the blood. Over time, this build up can narrow the arteries and reduce the supply of oxygen-rich blood to the heart. This can lead to chest pain, shortness of breath, heart attacks, and other serious complications. Managing risk factors such as high blood pressure, high cholesterol, and smoking can help prevent and manage coronary heart disease.Rate this question:
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- 30.
The most common site for checking the pulse is the ___.
- A.
Brachial artery
- B.
Brachial vein
- C.
Radial artery
- D.
Radial vein
Correct Answer
C. Radial arteryExplanation
The correct answer is the radial artery. The pulse is commonly checked at the radial artery because it is easily accessible and located on the wrist, making it convenient for healthcare professionals to assess the heart rate. The radial artery is also a major artery that carries oxygenated blood from the heart to the hand, making it an ideal site for measuring the pulse.Rate this question:
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- 31.
The purpose of capillaries is to ___.
- A.
Exchange oxygen from the artery for carbon dioxide in the vein
- B.
Exchange oxygen from the vein for carbon dioxide in the artery
- C.
Initiate the impulse that causes the heart beat
- D.
Deliver oxygenated blood to the body
Correct Answer
A. Exchange oxygen from the artery for carbon dioxide in the veinExplanation
Capillaries are tiny blood vessels that connect arteries and veins. Their main function is to facilitate the exchange of gases, nutrients, and waste products between the bloodstream and surrounding tissues. Specifically, capillaries allow for the exchange of oxygen from the artery to the surrounding tissues, while simultaneously allowing for the exchange of carbon dioxide from the tissues to the vein. This process is essential for maintaining proper oxygenation and removal of waste products in the body's tissues.Rate this question:
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- 32.
What is the difference between veins and arteries?
- A.
Veins carry oxygenated blood from the heart & arteries carry deoxygenated blood to the heart
- B.
Arteries carry oxygenated blood from the heart & veins carry deoxygenated blood to the heart
- C.
Veins are found throughout the body & arteries are only found in the heart
- D.
Veins are only found in the heart & arteries are found throughout the body
Correct Answer
B. Arteries carry oxygenated blood from the heart & veins carry deoxygenated blood to the heartExplanation
Veins and arteries have different functions in the circulatory system. Arteries carry oxygenated blood away from the heart to the body's tissues, while veins carry deoxygenated blood back to the heart. This is because oxygenated blood is pumped out of the heart through the arteries to supply oxygen to the body, and deoxygenated blood is returned to the heart through the veins to be reoxygenated. Therefore, the correct answer is "arteries carry oxygenated blood from the heart & veins carry deoxygenated blood to the heart."Rate this question:
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- 33.
The process of removing blood from a vein is called ___.
- A.
Venipuncture
- B.
Embolism
- C.
Fibrillation
- D.
Angioplasty
Correct Answer
A. VenipunctureExplanation
Venipuncture is the correct answer because it refers to the process of removing blood from a vein. It involves puncturing a vein with a needle to collect a blood sample or administer medication. Embolism refers to a blockage in a blood vessel, fibrillation is an abnormal heart rhythm, and angioplasty is a procedure to open blocked or narrowed blood vessels.Rate this question:
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- 34.
A sphygmomanometer and a stethoscope are used in order to ___.
- A.
Estimate the amount of oxygen in a specific artery
- B.
Check for heart murmurs
- C.
Measure the blood sugar levels
- D.
Measure the blood pressure
Correct Answer
D. Measure the blood pressureExplanation
A sphygmomanometer and a stethoscope are used to measure the blood pressure. A sphygmomanometer is the device used to inflate and deflate the cuff around the upper arm, while the stethoscope is used to listen to the sounds of blood flow in the arteries. By using these two tools together, healthcare professionals can determine both the systolic and diastolic blood pressure readings, which provide important information about a person's cardiovascular health.Rate this question:
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- 35.
The ______ of the heart are located at the entrance and exit of the ventricles.
- A.
Valves
- B.
Atrium
- C.
Veins
- D.
Aorta
Correct Answer
A. ValvesExplanation
The correct answer is valves. The valves of the heart are located at the entrance and exit of the ventricles. These valves, known as the atrioventricular valves and semilunar valves, ensure that blood flows in the correct direction through the heart. The atrioventricular valves, consisting of the tricuspid valve and the mitral valve, separate the atria from the ventricles. The semilunar valves, including the pulmonary valve and the aortic valve, are located at the exit of the ventricles, preventing the backflow of blood into the ventricles.Rate this question:
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- 36.
Which of the following is the correct path of blood flow through the heart?
- A.
Vena cava -> right atrium -> right ventricle -> pulmonary artery -> lungs -> pulmonary veins -> left atrium -> left ventricle -> aorta
- B.
Vena cava -> left atrium -> left ventricle -> pulmonary artery -> lungs -> pulmonary veins -> right atrium -> right ventricle -> aorta
- C.
Aorta -> left atrium -> right atrium -> pulmonary artery -> lungs -> pulmonary veins -> left ventricle -> right ventricle -> vena cava
- D.
Vena cava -> right atrium -> left atrium -> pulmonary artery -> lungs -> pulmonary veins -> right ventricle -> left ventricle -> aorta
- E.
Vena cava -> left atrium -> right atrium -> pulmonary artery -> lungs -> pulmonary veins -> left ventricle -> right ventricle -> aorta
Correct Answer
A. Vena cava -> right atrium -> right ventricle -> pulmonary artery -> lungs -> pulmonary veins -> left atrium -> left ventricle -> aortaExplanation
The correct path of blood flow through the heart starts with the vena cava, which carries deoxygenated blood from the body to the right atrium. From there, the blood moves into the right ventricle and then into the pulmonary artery, which takes the blood to the lungs to be oxygenated. After oxygenation, the blood returns to the heart through the pulmonary veins, entering the left atrium. It then passes into the left ventricle, which pumps the oxygenated blood out of the heart and into the aorta, the main artery that distributes oxygenated blood to the rest of the body.Rate this question:
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- 37.
This is a tumor of a blood vessel.
- A.
Angioblast
- B.
Angistenosis
- C.
Angioma
- D.
Angioplasty
Correct Answer
C. AngiomaExplanation
An angioma is a type of tumor that forms in the blood vessels. It is a benign growth that can occur in various parts of the body, including the skin, organs, and brain. Angiomas are typically red or purple in color and may appear as small, raised bumps or flat patches. They are caused by an abnormal overgrowth of blood vessels and are usually harmless, although they can sometimes cause symptoms or complications depending on their location and size.Rate this question:
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- 38.
This is the surgical repair of a blood vessel.
- A.
Arteriotomy
- B.
Angioma
- C.
Angiostenosis
- D.
Angioplasty
Correct Answer
D. AngioplastyExplanation
Angioplasty is the correct answer because it refers to the surgical repair of a blood vessel. It is a procedure used to widen narrowed or blocked blood vessels, typically caused by the buildup of plaque. During angioplasty, a small balloon is inserted into the blood vessel and inflated to open up the narrowed area. This allows for improved blood flow and can help alleviate symptoms such as chest pain or shortness of breath. Arteriotomy, angioma, and angiostenosis are not related to the surgical repair of blood vessels.Rate this question:
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- 39.
This occurs when a blood clot obstructs a blood vessel.
- A.
Embolism
- B.
Vasodialator
- C.
Phlebitis
- D.
Bicuspid
Correct Answer
A. EmbolismExplanation
An embolism refers to the occurrence when a blood clot blocks or obstructs a blood vessel. This can happen when a clot forms in one part of the body and then travels through the bloodstream, eventually getting stuck in a narrower blood vessel. The obstruction can disrupt the normal flow of blood and potentially lead to serious health complications depending on the size and location of the clot.Rate this question:
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- 40.
In which pathology is the hemoglobin level of blood lower than normal?
- A.
Anemia
- B.
Angina
- C.
Clotting disorder
- D.
Phlebitis
Correct Answer
A. AnemiaExplanation
Anemia is a condition characterized by a lower than normal level of hemoglobin in the blood. Hemoglobin is responsible for carrying oxygen to the body's tissues, so a decrease in its levels can lead to symptoms such as fatigue, weakness, and shortness of breath. Anemia can be caused by various factors, including iron deficiency, vitamin deficiencies, chronic diseases, and genetic disorders. Treatment typically involves addressing the underlying cause and may include iron supplements, dietary changes, or medication.Rate this question:
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- 41.
Which pathology is an inflammation of the wall of a vein?
- A.
Anemia
- B.
Phlebitis
- C.
Deep vein thrombosis
- D.
Epitaxis
Correct Answer
B. PhlebitisExplanation
Phlebitis is the correct answer because it refers to the inflammation of the wall of a vein. Anemia is a condition characterized by a decrease in the number of red blood cells or hemoglobin in the blood. Deep vein thrombosis is the formation of a blood clot in a deep vein, while epitaxis refers to nosebleeds.Rate this question:
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- 42.
This type of blood cell has the function of carrying oxygen to body cells and is commonly referred to as a red blood cell.
- A.
Erythrocytes
- B.
Leukocytes
- C.
Thrombocyte
- D.
All answer choices
Correct Answer
A. ErythrocytesExplanation
Erythrocytes, also known as red blood cells, are responsible for carrying oxygen to body cells. They contain a protein called hemoglobin, which binds to oxygen in the lungs and releases it to the tissues throughout the body. Erythrocytes are the most abundant type of blood cell and are crucial for maintaining oxygen levels and supporting cellular respiration.Rate this question:
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- 43.
These blood cells help blood clot and are referred to as platelets.
- A.
Erythrocytes
- B.
Leukocytes
- C.
Thrombocytes
- D.
All answer choices
Correct Answer
C. ThrombocytesExplanation
Thrombocytes are blood cells that help in the process of blood clotting. They are responsible for forming clots to prevent excessive bleeding when a blood vessel is damaged. Erythrocytes, also known as red blood cells, are responsible for carrying oxygen to the body's tissues. Leukocytes, also known as white blood cells, are part of the immune system and help in fighting infections. Therefore, the correct answer is Thrombocytes because they specifically aid in blood clotting.Rate this question:
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- 44.
The ONLY veins that carry oxygenated blood are called the ___.
- A.
Superior veins
- B.
Femoral veins
- C.
Subclavian veins
- D.
Pulmonary veins
- E.
Aortic veins
Correct Answer
D. Pulmonary veinsExplanation
The pulmonary veins are the only veins in the body that carry oxygenated blood. This is because they transport blood from the lungs, where oxygen is added to the blood, back to the heart. The other veins listed in the options, such as superior veins, femoral veins, subclavian veins, and aortic veins, carry deoxygenated blood from various parts of the body back to the heart.Rate this question:
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- 45.
The two uppermost (and smallest) chambers of the heart are called?
- A.
Arteries
- B.
Vesicles
- C.
Valves
- D.
Atria or atrium
Correct Answer
D. Atria or atriumExplanation
The two uppermost chambers of the heart are called the atria or atrium. These chambers receive blood from the veins and then contract to pump the blood into the lower chambers of the heart, known as the ventricles. The atria play a crucial role in the circulation of blood, as they help to ensure that blood flows in the correct direction and is efficiently pumped throughout the body.Rate this question:
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- 46.
The two main (biggest) chambers of the heart are called?
- A.
Atrium
- B.
Ventricles
- C.
Veins
- D.
Arteries
Correct Answer
B. VentriclesExplanation
The two main chambers of the heart are called ventricles. The ventricles are the lower chambers of the heart and are responsible for pumping blood to the rest of the body. They have thicker walls compared to the atria, which are the upper chambers of the heart. The ventricles receive blood from the atria and then contract to pump it out to the lungs and the rest of the body.Rate this question:
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- 47.
Red blood cells are made where?
- A.
The spleen
- B.
The pancreas
- C.
Bone marrow
- D.
The liver
Correct Answer
C. Bone marrowExplanation
Red blood cells are made in the bone marrow. The bone marrow is a soft, spongy tissue found inside the bones. It is responsible for producing red blood cells, along with other blood cells like white blood cells and platelets. Red blood cells are essential for carrying oxygen to different parts of the body. The bone marrow continuously produces new red blood cells to replace old or damaged ones, ensuring a constant supply in the bloodstream.Rate this question:
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- 48.
These blood cells help fight off infections and foreign materials.
- A.
Erythrocytes
- B.
Leukocytes
- C.
Thrombocytes
- D.
All answer choices
Correct Answer
B. LeukocytesExplanation
Leukocytes, also known as white blood cells, are responsible for fighting off infections and foreign materials in the body. They play a crucial role in the immune system by identifying and destroying pathogens, such as bacteria and viruses. Unlike erythrocytes (red blood cells) which primarily carry oxygen, and thrombocytes (platelets) which aid in blood clotting, leukocytes are specifically designed to combat infections and protect the body from harmful invaders. Therefore, the correct answer is leukocytes.Rate this question:
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Oct 24, 2024Quiz Edited by
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Apr 09, 2014Quiz Created by
Awest
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