RxPG - the perfect Rx for medical Post Graduate entrance blues!
Mobile Edition | Help/Newbie? | 24/7 Support
HOT | PrePG | MCQ | DNB | Careers | Books | Colleges | Dental | DocIndia | PLAB |  USMLE  | Australia | Canada | GLOBAL | OffBeat!
Articles | Forums | MCQ Crammer | Downloads | Mnemonics | Revision Tools | Recent Shouts | All Features


Physiology: Daily Free Online Mock Test 69

Author: rxpg, Posted on Friday, August 22 @ 00:00:00 IST by rxpg  

 FRIEND Add to My Pages   PRINTER Printer Friendly   FRIEND Email Story  FRIEND Download Story  Physiology alerts 

Physiology

Multiple Choice Test



1) The pressure pulse wave in systemic arteries :

One answer only.
   a) Propagates at about 0.7m / sec
   b) Is initiated by the ejection of blood into the aorta
   c)Is palpable at the wrist, 1 second after ventricular ejection
   d)Has the same velocity as arterial blood flow
   e) Is unaffected by arterial vasoconstriction





2) Activation of atrial stretch receptors :

One answer only.
   a) Releases renin from the JG cells
   b) Increases renal Na+ excretion
   c) Triggers the CNS ischaemic response
   d)Causes reflex vasoconstriction of peripheral arteries
   e) Decreases urine production



3) Coronary artery blood flow :

One answer only.
   a) Does not depend on arterial B.P.
   b) Is greatest during systole in the left circumflex coronary artery
   c) Is regulated mainly by myocardial O2 consumption
   d)Accounts for about 10% of the cardiac output
   e) Is greatest during diastole in the right coronary artery



4) All are true of isovolemic contraction phase except :

One answer only.
   a) It accounts for the entire pre ejection period (PEP) of the electromechanical systole
   b) It occurs before left ventricular ejection time (LVET)
   c) All the valves are closed
   d) It is the phase of maximum rate of rise of left ventricular pressure



5) In cardiac muscle, the strength of a contraction would be increased by all the following except :

One answer only.
   a) Inhibition of Na+ - Ca++ exchange
   b) Lengthening of sarcomeres
   c) Phosphorylation of the SR Calcium pump
   d) Inhibition of Na+ - K+ pump
   e) A decrease in heart rate



6) A decrease in K+ conductance is associated with which of the phases of the ventricular action potential ?

One answer only.
   a) 0
   b) 1
   c) 2
   d)3
   e) 4



7) Phase 2 corresponds to which component of the ECG ?

One answer only.
   a) P - wave
   b) P - R interval
   c) QRS complex
   d) S - T segment
   e)T wave



8) The amplitude of the pulse pressure in the aorta is :

One answer only.
   a) Directly proportional to the stroke volume
   b) Directly proportional to the aortic capacitance
   c) Directly proportional to the peripheral resistance
   d) Calculated by adding one third of the difference between systolic and diastolic pressure to the diastolic pressure.
   e) Greater in the proximal than in the distal aorta



9) A patient absorbs 300ml / min of oxygen. The O2 content of the blood taken to the femoral artery = 18ml / 100ml ; blood taken from the pulmonary artery has an oxygen content of 13ml / 100ml and blood taken from the femoral vein has an oxygen content of 140ml / 100ml. If the patient has a heart rate of 60 beats per min, the patient’s stroke volume is :

One answer only.
   a) 10ml
   b) 12.5ml
   c) 80ml
   d) 100ml
   e)120ml



10) The most important physiological regulator of resistance in cutaneous blood vessels is :

One answer only.
   a) Lactic acid
   b) Adenosine
   c) Potassium
   d) Norepinephrine
   e) CO2


You can discuss the answers and queries of RxPG mediMOCKS in our new mediMOCK Discussion Forum




4 (Excellent) 3(Good) 2(Good) 1(Bad)   


Recommended Books for Physiology
• Books to read for Physiology by RxPG

Related Physiology articles
• Electrocardiographic features of Hyperkalemia
• Online Mock Test 146 (PGI Pattern)
• Physiology; Daily Free Online Mock Test 124 (PGI Pattern)
• Physiology: Daily Free Online Mock Test 75
• Physiology: Daily Free Online Mock Test 74
• Physiology: Daily Free Online Mock Test 73
• Physiology: Daily Free Online Mock Test 69
• Physiology: Daily Free Online Mock Test 68
• Physiology; Daily Free Online Mock Test 60
• Physiology; Free Online Mock Test 51
• Physiology; Daily Free Online Mock Test 50
• Physiology; Free Online Mock Test 45
• Physiology; Free Online Mock Test 44
• Physiology; Free Online Mock Test 43
• Physiology; Free Online Mock Test 42
• Physiology; Free Online Mock Test 40
• Physiology; Free Online Mock Test 20

Related Physiology Discussions

Other articles by rxpg
• RxPG Interview With Dr Sumit Seth - Civil Services 2005 Top Ranker
• Stroke - Neurology Online Mock Test 235
• Stroke - Neurology Online Mock Test 234
• Stroke - Neurology Online Mock Test 233
• List of Some Bioinformatics Courses in India
• Microbiology and Parasitology Online Mock Test 232
• DNB Online Mock Test 231
• Neurology Online Mock Test 230
• Anatomy Mock MCQ Test 229
• Anatomy Mock MCQ Test 228
• Revisable Quick List of New Drugs for PG Entrance Exams
• Radiology Daily Online Mock Test 228
• Pediatrics Free Online Daily Mock Test 227 - PGI Exam Pattern
• Paediatrics PGIMER PG Entrance Pattern Free Online Mock Test 226
• Paediatrics Free Online PG Entrance Daily Mock Test 225
• Preservatives used while packing catgut suture
• Neurology Free Online Mock Test 223
• Biostatistics Online Mock Test 222
• Neurology Free Online Medical Mock Test 221
• Neurology Free Online Medical Mock Test 220

 Physiology FAQ
  Browse all FAQs


Write an Article on Physiology
You can share your exam experiences, preparation strategies, books you have read or just any information about Physiology on RxPG website and we will publish it under your name.

Article Rating
Average Score: 4.66
Votes: 3




Most Read Article
Physiology: Daily Free Online Mock Test 74

Related Links
· Physiology Books at Amazon.com






ARTICLE TOOLS

· Physiology section
· Articles by rxpg
· Add to my pages
· Printer friendly version
· PDF version
· Email article
· Feedback on this article
· Medical tutorials
· Related forum posts
· Related articles
· Related downloads
· Submit article
· Physiology alerts
· Physiology books
· Physiology past papers


Most read story about Physiology:
Physiology: Daily Free Online Mock Test 74



Server Status: 122 pages served in last minute. Page generation time: 0.033 seconds

Site Maps: [Books] [News] [Forums] [Reviews] [Mnemonics]

sitemap - top30 - centuries - testimonials


About Us :: Disclaimer :: Contact Us :: Reporting abuse :: Terms of Services :: Privacy Policy

Advertise with RxPG!
Made in India by RxPG Medical Solutions Private Limited

"RxPG" is a Registered Trademark

Chrome Web Store YouTube Twitter LinkedIn Wikipedia Facebook