NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Medical Science MCQs (Practice_Test 79 of 135)
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- To which one or the following events in the heart does the PH interval in ECG training correspond?
- Cardiac impulse reaching AV node
- Cardiac impulse generation in SA node
- Atrail depolarization and conduction through AV node
- Atrail depolarisation
- Respiratory centres in the brain stem show decreased sensitivity to P CO2 during
- Slow-wave sleep
- Mental concentration
- Physical exercise
- Voluntary hyperventilation
- Consider the following statements: AV Nodal delay
- allows atrial to get filled adequately
- allows atrial systole to be over
- is due to less nexi between AV Nodal fibres.
- Which of the statemtns given above are correct?
- 1,2 and 3
- 1 and 3
- 2 and 3
- 1 and 3
- In a heart beating at 72 times⟋minute the absolute refractor period is
- 3 milliseconds
- 30 milliseconds
- 300 milliseconds
- 3 Seconds
- The sequence of steps in muscle relaxation is
- Release of Ca2 + from troponin, Ca2 + pumped back in sarcoplasmic reticulum, cessation of interaction between actin and myosin
- Release of Ca2 + from troponin, cessation of interaction between actin and myosin, Ca2 + pumped back in sarcoplasmic reticulum
- Ca2 + pumped back in sarcoplasmic reticulum, release of Ca2 + from troponin, cessation of interaction between actin and myosin
- Cessation of interaction between actin and myosin, release of Ca2 + from troponin, Ca2 + pumped back in sarcoplasmic reticulum
- Ovulation occurs
- immediately after LH peak
- nine hours after LH peak
- during early part of follicular phas
- three hours after LH peak
- The over-expression of a trinucleotide repeat causes
- Parkinsons disease
- Caissons disease
- Addisons disease
- Huntingtons disease
- Which one of the following factors is stimulant of both peripheral and central chemoreceptors causing increased ventilation?
- A decrease in arterial oxygen content
- An increase in arterial CO2 tension
- A decrease in arterial O2 tension
- An increase in arterial blood pH
- the excitatory signals from Pontine reticular formation are normally inhibited by
- vestibular nuclei
- cerebellar nuclei
- Medullary reticular formation
- Basal ganglia
- Stimulation of which one of the following can produce sleep?
- Posterior hypothalamus
- Medullary reticular formation
- Gracile and cuneate nuclei
- Occipital cortex
- Match List I (Sensory Receptor) with List II (Response elicited) and select the correct answer using the codes:
Table Supporting: NET, IAS, State-SET (KSET, WBSET, MPSET, Etc.) , GATE, CUET, Olympiads Etc. : Medical Science MCQs (Practice_Test 79 of 135) List-I List-II - Muscle spindle
- Free nerve endings
- Gustatory receptors
- Labyrinthine receptors
- Postural adjustment salivation
- Muscle contraction
- Muscle contraction
- Withdrawl response
- Muscle relaxation
- A
- B
- C
- D
- 1
- 4
- 3
- 2
- 1
- 5
- 3
- 2
- 3
- 1
- 2
- 4
- 3
- 5
- 2
- 1
- Consider the following diseases:
- Hymenolepis nana infection
- Endemic typhus
- Trench fever
- Which of the above is⟋are transmitted by rat flea?
- 1 and 2
- 2 and 3
- 2 only
- 1 and 3
- Consider the following kinds of substances:
- Adhesion molecules
- Chemical mediators
- bacterial antigens
- Toxic oxygen radicals
- Which of the above determine leucocyte adhesion and transmigration in inflammation?
- 1 only
- 1 and 2
- 2,3 and 4
- 3 and 4
- Which one of the following is not a macrophage product?
- Tumour necrosis factor (TNF)
- Interleukin I
- Bradykinin
- Lysozyme
- Consider the following statements: The histologic identity of chronic inflammation constitute
- Infiltration of tissue by mononuclear cells
- Exudation of fluid in the tissue
- Proliferation of fluid in the tissue
- proliferation of fibroblasts
- Which of the statements given above are correct?
- 1,2 and 3
- 2,3 and 4
- 1,3 and 4
- 1,2 and 4