Biology

Cardiovascular and Nervous System

983 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 biology transport in mammals regulation of the activity of heart drug, tobacco and alcohol consumption community health and hygiene

An ECG shows the functioning of the 

  1. Brain

  2. Heart

  3. Lungs

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

A permanent record of the electric events occurring during a cardiac cycle made on a graph paper in a wave form called electrocardiogram. The electric events include depolarization and repolarization of the auricles and ventricles bringing about their contraction and relaxation. The instrument used to record hearts electric event is named electrocardiograph.

Multiple choice biology life processes: control and coordination nervous system in animals structure of neuron structure and function of neuron

You are watching a horror movie and you notice your heart is beating fast and mouth is dry; it is because

  1. Fight and flight response

  2. Autonomic nervous system

  3. Sympathetic nervous system

  4. Both A and C

  5. Release of acetylcholine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
You are watching a horror movie and you notice your heart is beating fast and mouth is dry; it is because of fight and flight response and sympathetic nervous system.
Fight and flight response is acute stress response.
The fight-or-flight response occurs in response to a perceived harmful event, attack, or threat to survival. The sympathetic nervous system originates in the spinal cord and its main function is to activate the physiological changes that occur during the fight-or-flight response. This component of the autonomic nervous system utilizes and activates the release of norepinephrine in the reaction.
The physiological changes that occur during the fight or flight response are activated in order to give the body increased strength and speed in anticipation of fighting or running. Some of the specific physiological changes and their functions include:
Increased blood flow to the muscles activated by diverting blood flow from other parts of the body.
Increased blood pressure, heart rate, blood sugars, and fats in order to supply the body with extra energy.
The blood clotting function of the body speeds up in order to prevent excessive blood loss in the event of an injury sustained during the response.
Increased muscle tension in order to provide the body with extra speed and strength.
Multiple choice

What is the difference between a pacemaker and an implantable cardioverter-defibrillator (ICD)?

  1. A pacemaker regulates the heart rate, while an ICD shocks the heart back into a normal rhythm.

  2. A pacemaker is implanted in the chest, while an ICD is implanted in the abdomen.

  3. A pacemaker is used to treat bradycardia, while an ICD is used to treat tachycardia.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A pacemaker regulates the heart rate, while an ICD shocks the heart back into a normal rhythm. A pacemaker is implanted in the chest, while an ICD is implanted in the abdomen. A pacemaker is used to treat bradycardia, while an ICD is used to treat tachycardia.

Multiple choice

What is the term for the condition in which the heart muscle becomes enlarged and weakened, making it difficult for the heart to pump blood effectively?

  1. Heart Failure

  2. Stroke

  3. Arrhythmia

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

Heart Failure occurs when the heart muscle becomes enlarged and weakened, making it difficult for the heart to pump blood effectively.

Multiple choice

What is the term for the condition in which the blood pressure is consistently high, increasing the risk of heart disease, stroke, and kidney disease?

  1. Hypertension

  2. Hypotension

  3. Arrhythmia

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

Hypertension is a condition in which the blood pressure is consistently high, increasing the risk of heart disease, stroke, and kidney disease.

Multiple choice

Which of the following is a common cause of infective endocarditis?

  1. Staphylococcus aureus

  2. Streptococcus pneumoniae

  3. Escherichia coli

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

Staphylococcus aureus is a common cause of infective endocarditis, a serious infection of the heart valves.

Multiple choice

What is the treatment for infective endocarditis?

  1. Antibiotics

  2. Surgery

  3. Both antibiotics and surgery

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

Infective endocarditis is typically treated with a combination of antibiotics and surgery.

Multiple choice

Which of the following is a complication of myocarditis?

  1. Heart failure

  2. Stroke

  3. Arrhythmias

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Myocarditis can lead to a variety of complications, including heart failure, stroke, and arrhythmias.

Multiple choice

What is the treatment for pericarditis?

  1. Anti-inflammatory medications

  2. Colchicine

  3. Pericardiocentesis

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pericarditis is typically treated with a combination of anti-inflammatory medications, colchicine, and pericardiocentesis.

Multiple choice

What is the prognosis for myocarditis?

  1. Excellent

  2. Good

  3. Fair

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

The prognosis for myocarditis is generally fair, with some patients recovering completely and others developing chronic heart failure.

Multiple choice

Which of the following is a complication of endocarditis?

  1. Stroke

  2. Heart failure

  3. Kidney failure

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Endocarditis can lead to a variety of complications, including stroke, heart failure, and kidney failure.

Multiple choice

What is the treatment for aortitis?

  1. Antibiotics

  2. Surgery

  3. Both antibiotics and surgery

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

Aortitis is typically treated with a combination of antibiotics and surgery.

Multiple choice

Which astrological sign is associated with the heart and circulatory system?

  1. Leo

  2. Virgo

  3. Libra

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

Leo is the astrological sign associated with the heart and circulatory system.

Multiple choice

Which heart valve is most commonly affected by endocarditis?

  1. Mitral valve

  2. Aortic valve

  3. Pulmonary valve

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

The mitral valve, which separates the left atrium from the left ventricle, is the most frequently affected valve in endocarditis.

Multiple choice

Which diagnostic test is commonly used to confirm endocarditis?

  1. Echocardiogram

  2. Electrocardiogram (ECG)

  3. Chest X-ray

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

Echocardiogram, a non-invasive imaging technique, is commonly employed to visualize the heart valves and detect any abnormalities associated with endocarditis.