Physiology MCQs

Page No. 1

The first heart sound is produced by the_____________?


aClosure of the aortic and pulmonary valves

✖


bOpening of the aortic and pulmonary valves

✖


cClosure of the mitral and tricuspid valves

✓


dOpening of the mitral and tricuspid valves

✖



Normally, the rate of the heart beat in a human is determined by _________________?


aThe bundle of His

✖


bAll cardiac muscle

✖


cThe sinoatrial node

✓


dThe cervical ganglion

✖


View Answer The sinoatrial node

Stroke output of each ventricle in normal adult is_____________?


a30 ml

✖


b130 ml

✖


c70 ml

✓


d5 liters

✖


View Answer 70 ml

Cardiac output is not affected by __________________?


aHeart rate

✖


bPeripheral resistance

✖


cSystolic blood pressure

✓


dVenous return

✖



All the heart valves are open during which stage of cardiac cycle __________________?


aSystolic ejection

✖


bIsovolumetric relaxation

✖


cIsovolumetric contraction

✖


dNone of the above

✓


View Answer None of the above

Starling’s law of the heard________________?


aDoes not operate in the failing heart

✖


bDoes not operate during exercise

✖


cExplains the increase in cardiac output that occurs when venous return is increased

✓


dExplains the increase in cardiac output when the sympathetic nerves supplying the heart stimulated

✖



Peripheral resistance is maximum in_______________?


aAorta

✖


bArtery

✖


cArteriole

✓


dVein

✖


View Answer Arteriole

Increased functional demand on the heart produces increased size of the myocardium by _______________?


aHyperplasia

✖


bHypertrophy

✓


cFatty infiltration

✖


dIncreased amounts of fibrous connective tissue

✖


View Answer Hypertrophy

Absolute refractory period in heart______________?


aLasts till cardiac contraction

✖


bLonger than refractory period in skeletal muscle

✖


cA phase of cardiac cycle in which heart cannot be stimulated by any amount of stimulus

✖


dAll of the above

✓


View Answer All of the above

Conduction velocity is least in_______________?


aAV node

✓


bSA node

✖


cSA node

✖


dPurkinje fibers

✖


View Answer AV node

Goto Page No.

Page 1 of 52

Alphabetical MCQs Categories
—

Here below You find all kind of categories of MCQs in alphabetical order.


"Comprehensive Collection of MCQs: Alphabetically Organized by Subject"
—

"Discover an extensive collection of multiple-choice questions (MCQs) neatly categorized by subject from A to Z. This resource is designed for anyone eager to explore various topics in a straightforward and organized manner. Whether you're a student preparing for exams, an educator seeking supplementary materials, or simply curious about different subjects, this compilation offers a convenient way to learn and assess your knowledge. With questions arranged alphabetically, navigation is effortless, allowing you to delve into subjects of interest at your own pace. Engage, learn, and expand your understanding with this accessible and comprehensive repository of MCQs!"


BolPakistan

bolpakistan.com.pk includes Job Mcqs and Pak Mcqs is the Top Largest Mcqs Forum in World, in which you can read Mcqs of All Subjects, PPSC test preparation, FPSC, NTS and PPSC PAST PAPERS, PPSC PAST MCQS. A Collection of Repeated MCQs for JOBs seekers.

Copyright © 2024, Designed & Developed by BolPakistan