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
-
0.8 seconds
-
0.5 seconds
-
1.0 seconds
-
1.5 seconds
A
Correct answer
Explanation
A normal resting human heartbeat takes approximately 0.8 seconds, which corresponds to a heart rate of about 75 beats per minute.
-
50 to 59
-
60 to 80
-
81 to 90
-
91 to 110
B
Correct answer
Explanation
The normal resting heart rate for an adult human typically ranges from 60 to 100 beats per minute. The range 60 to 80 is well within the healthy average.
-
Brain
-
Heart
-
Eggs
-
None of these
B
Correct answer
Explanation
Cardiology is the medical specialty that deals with disorders of the heart and the cardiovascular system.
-
2 litres
-
5 litres
-
10 litres
-
20 litres
B
Correct answer
Explanation
Cardiac output per minute during normal working in man is about 5 litres.
-
myogenic
-
neurogenic
-
cardiogenic
-
digenic
A
Correct answer
Explanation
The heart of a man is myogenic.
-
left atrium and left ventricle
-
right atrium and right ventricle
-
left atrium and right atrium
-
right ventricle and left ventricle
A
Correct answer
Explanation
The mitral valve (also known as the bicuspid valve or left atrioventricular valve) is a dual-flap valve in the heart that lies between the left atrium (LA) and the left ventricle (LV).
-
aorta is present on the left side
-
heart is present on the left side
-
ventricles are present on the left side
-
left ventricle is present on the left side
A
Correct answer
Explanation
The heart beat is heard on the left side of the chest as aorta is present on the left side.
-
heart beat
-
systole
-
diastole
-
heart sound
B
Correct answer
Explanation
The phase of contraction of the heart is termed as systole.
-
right side of interauricular septum
-
right side of interventricular septum
-
middle of interauricular septum
-
middle of interventricular septum
A
Correct answer
Explanation
The atrioventricular node is located on the right side of interauricular septum.
-
Sinu auricular node
-
Atrio ventricular node
-
Sino ventricular node
-
Ventriculo atrial node
-
-
A
Correct answer
Explanation
SA node is the heart's natural pacemaker. In the upper part of the right atrium of the heart, there is a specialised bundle of neurons known as the sinoatrial node (SA node).
-
68 to 70 times in a minute
-
75 to 77 times in a minute
-
70 to 72 times in a minute
-
None of these
C
Correct answer
Explanation
The average resting heart rate for a healthy adult is typically between 70 and 72 beats per minute.
-
Reflex centres
-
Vital cardiac centre
-
Medulla
-
Promotor area
B
Correct answer
Explanation
Cardiac centre of vital centres regulates heart beat.
-
Stomach
-
Calf muscles
-
Thighs
-
Wrist
-
Arm pit
D
Correct answer
Explanation
This is the correct option. The doctor will feel the pulse at the wrist. At other places, the arteries are lying deep in the tissues.
B
Correct answer
Explanation
The human heart has four chambers connected by valves. We have 2 smaller chambers on the upper half of our heart and two larger chambers on the bottom of our heart. The smaller chambers are called atria; the larger chambers are called ventricles. So we refer to these chambers as right and left atrium, and right and left ventricle.
B
Correct answer
Explanation
Heart rate is the number of heartbeats per unit of time, typically expressed as beats per minute (bpm). Heart rate can vary as the body's need to absorb oxygen and excrete carbon dioxide changes, such as during exercise or sleep. Heart rate is measured by finding the pulse of the body. The average heart beat per minute in a normal man is 70.