Biology

Cardiovascular and Nervous System

981 Questions

Review the human cardiovascular system through these competitive exam practice questions. Key areas include heart valves, cardiac impulse pathways, and blood pressure regulation. A solid grasp of these fundamentals is crucial for science sections.

Heart anatomy and valvesCardiac impulse conductionBlood pressure mechanicsHeartbeat regulation

Cardiovascular and Nervous System Questions

Multiple choice

How many valves are present in the heart?

  1. 2

  2. 3

  3. 4

  4. 5
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There are four valves in the heart: the tricuspid valve, pulmonary valve, mitral valve, and aortic valve.

Multiple choice

What is the function of the mitral valve?

  1. Prevents blood from flowing back into the left atrium

  2. Prevents blood from flowing back into the right atrium

  3. Prevents blood from flowing back into the left ventricle

  4. Prevents blood from flowing back into the right ventricle
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The mitral valve prevents blood from flowing back into the left atrium during ventricular contraction.

Multiple choice

What is the term for the phase of the cardiac cycle when the heart muscle relaxes and fills with blood?

  1. Systole

  2. Diastole

  3. Atrial Contraction

  4. Ventricular Contraction
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Diastole is the phase of the cardiac cycle when the heart muscle relaxes and fills with blood.

Multiple choice

Which of the following is responsible for initiating the electrical impulse that causes the heart to contract?

  1. Sinoatrial Node (SA Node)

  2. Atrioventricular Node (AV Node)

  3. Bundle of His

  4. Purkinje Fibers
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The sinoatrial node (SA Node) is responsible for initiating the electrical impulse that causes the heart to contract.

Multiple choice

What is the term for the abnormal heart rhythm characterized by rapid, irregular heartbeats?

  1. Bradycardia

  2. Tachycardia

  3. Arrhythmia

  4. Fibrillation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Arrhythmia is the term for the abnormal heart rhythm characterized by rapid, irregular heartbeats.

Multiple choice

Which of the following is a condition in which the heart muscle becomes enlarged and weakened?

  1. Cardiomyopathy

  2. Heart Attack

  3. Heart Failure

  4. Stroke
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cardiomyopathy is a condition in which the heart muscle becomes enlarged and weakened.

Multiple choice

What is the term for the condition in which the heart fails to pump blood effectively?

  1. Cardiomyopathy

  2. Heart Attack

  3. Heart Failure

  4. Stroke
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Heart failure is the condition in which the heart fails to pump blood effectively.

Multiple choice

Which of the following is a device that is implanted in the heart to regulate its rhythm?

  1. Coronary Artery Bypass Grafting (CABG)

  2. Percutaneous Coronary Intervention (PCI)

  3. Heart Transplant

  4. Pacemaker Implantation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pacemaker implantation is the procedure in which a device is implanted in the heart to regulate its rhythm.

Multiple choice

What is the term for the condition in which the heart muscle is deprived of oxygen?

  1. Heart Attack

  2. Stroke

  3. Arrhythmia

  4. Cardiomyopathy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Heart attack is the condition in which the heart muscle is deprived of oxygen.

Multiple choice

What is the term for the condition in which the heart stops beating?

  1. Heart Attack

  2. Stroke

  3. Cardiac Arrest

  4. Cardiomyopathy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cardiac arrest is the condition in which the heart stops beating.

Multiple choice

What is the prognosis for cardiovascular disease?

  1. The prognosis for cardiovascular disease depends on the type of cardiovascular disease and the severity of the disease.

  2. The prognosis for cardiovascular disease is always poor.

  3. The prognosis for cardiovascular disease is always good.

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The prognosis for cardiovascular disease depends on the type of cardiovascular disease and the severity of the disease. Some types of cardiovascular disease, such as coronary artery disease, can be managed with lifestyle changes and medications. Other types of cardiovascular disease, such as heart failure, can be fatal.

Multiple choice

What is the critical period for development of the heart?

  1. 3-8 weeks

  2. 8-12 weeks

  3. 12-16 weeks

  4. 16-20 weeks
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The critical period for development of the heart is 3-8 weeks of gestation.

Multiple choice

Which of the following is NOT a common type of congenital heart defect?

  1. Atrial septal defect

  2. Ventricular septal defect

  3. Tetralogy of Fallot

  4. Patent ductus arteriosus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Patent ductus arteriosus is a congenital heart defect that usually closes shortly after birth.

Multiple choice

Which physiological response is commonly associated with feelings of love or affection?

  1. Increased heart rate

  2. Constricted pupils

  3. Elevated blood pressure

  4. Decreased muscle tension
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Love and affection are often accompanied by decreased muscle tension, leading to feelings of relaxation and comfort.

Multiple choice

What is the term for the narrowing of the arteries due to the buildup of plaque?

  1. Atherosclerosis

  2. Cardiotoxicity

  3. Ischemia

  4. Arrhythmia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Atherosclerosis is the term for the narrowing of the arteries due to the buildup of plaque.