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Physiology

6 Mar, 08:31

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Correct Answer-A
Meissner's corpuscles are dendrites encapsulated in connective tissue and respond to
changes in texture and slow vibrations. Merkel cells are expanded dendritic endings, and
they respond to sustained pressure and touch. Ruffini corpuscles are enlarged dendritic
endings with elongated capsules, and they respond to sustained pressure. Pacinian
corpuscles consist of unmyelinated dendritic endings of a sensory nerve fiber, 2 m In
diameter, encapsulated by concentric lamellae of connective tissue that give the organ the
appearance of a cocktail onion. Theses receptors respond to deep pressure and fast
vibration.


Ref:Barrett K.E., Barman S.M., Boitano & Brooks H.L. (2012). Chapter 8. Somatosensory
Neurotransmission: Touch, Pain, and Temperature. In K.E. Barrett, S.M. Barman, S.
Boitano, H.L. Brooks (Eds), Ganong's Review of Medical Physiology, 24e.
4.7k 0 5 7
Physiology

5 Mar, 08:29

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6. Ruffini end organ is associated with sensation of: #NEET PG #INICET #PYQ #FMGE
Poll
  •   a) Sustained Pressure
  •   b) Heat
  •   c) Touch
  •   D)None of the above
456 votes
16.4k 3 17 15
Physiology

2 Mar, 22:01

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Simple diffusion is not carrier mediated
transport hence do not follow saturation
kinetics.


◦ Facilitated diffusion, primary active transport,
and secondary active transport all involve
integral membrane proteins and are called
carrier-mediated transport.
◦ All carrier-mediated transport system follow
saturation kinetics
◦ The figure shows that as the concentration
of the diffusing substance increases, the rate
of simple diffusion continues to increase
proportionately, but in the case of facilitated
diffusion, the rate of diffusion cannot rise
greater than the transport maximum (Tm).
Tm is analogous to maximum velocity
(Vmax) level in enzyme kinetics
6.9k 0 7 13
Physiology

1 Mar, 22:00

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Forward from: Physiology
All of the following follow transport saturation kinetics except #NEET PG #INICET #PYQ #FMGE
Poll
  •   A. Facilitated diffusion
  •   B. Na+-Ca2+ exchanger
  •   C. Simple diffusion
  •   D. Coupled transport
14084 votes
4.8k 0 9 2
Physiology

28 Feb, 11:20

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Correct Answer-A
Ans. A. Beta cells of pancreas
8.1k 0 1 3
Physiology

27 Feb, 11:18

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Forward from: Physiology
GLUT2 is present mainly in ? #NEET PG #FMGE #INICET #PYQ
Poll
  •   a) Beta cells of pancreas
  •   b) Placenta
  •   c) Skeletal muscle
  •   D)Cardiac muscle
6140 votes
6k 0 4 6
Physiology

27 Feb, 11:17

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Forward from: Orthopaedics
Bunion is commonly seen at ? #NEET PG #INICET #PYQ #FMGE
Poll
  •   A)Great toe MTP joint
  •   b) Medial malleolus
  •   c) Lateral Malleolus
  •   d) Shin of tibia
21348 votes
4.9k 0 2 2
Physiology

11 Feb, 11:59

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Correct Answer -B

End diastolic volume REF: Guyton's physiology 22nd edition page
111, http://en.wikipedia.org/wiki/Preload_%28cardiology%29
"For cardiac contraction, the preload is usually considered to be the
end-diastolic pressure when the ventricle has become filled"
Quantitatively, preload can be calculated as
LV EDT.LV ÉDR
2h
Where LVEDP = Left ventricular end diastolic pressure, LVEDR =
Left ventricular end diastolic radius (at the ventricle's midpoint), and
h = thickness of the ventricle. This calculation is based on the Law of
Laplace.
Preload (cardiology)
In cardiac physiology, preload is the amount of sarcomere stretch experienced by cardiac muscle cells, called cardiomyocytes, at the end of ventricular filling during diastole. Preload is directly related to ventricular filling. As the relaxed ventricle fills during diastole, the walls are stretched...
16k 0 9 1 10
Physiology

10 Feb, 11:58

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2. Preload measures? #NEET PG #FMGE #INICET #PYQ
Poll
  •   a) End systolic volume
  •   b) End diastolic volume
  •   c) Peripheral resistance
  •   D)Stroke volume
149 votes
28.1k 1 27 1 9
Physiology

28 Jan, 08:50

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Correct Answer- A
Ans. A. Suprachiasmatic nucleus
The biologic clock responsible for the diurnal ACTH rhythm is
located in the suprachiasmatic nuclei of the hypothalamus
15.7k 0 3 8
Physiology

27 Jan, 08:49

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Diurnal variation of ACTH depends on ? #NEET PG #FMGE #INICET #PYQ
Poll
  •   a) Suprachiasmatic nucleus
  •   b) Supraoptic nucleus
  •   c) Ventrolateral nucleus
  •   d) Thalamus
80 votes
15.3k 0 7 1 17
Physiology

25 Jan, 05:43

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Correct Answer-B
Ans.B. Posterior lobe
Pituicytes are glial cells of posterior pituitary.
15k 0 1 5
Physiology

24 Jan, 05:41

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Pituicytes are seen in
Poll
  •   a) Anterior lobe
  •   b) Posterior lobe
  •   c) Intermediate lobe
  •   d) All
328 votes
18.5k 3 9 16
Physiology

21 Jan, 21:39

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Correct Answer-A
Ans. A. Beta cells of pancreas
15.1k 0 1 1 3
Physiology

20 Jan, 21:38

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GLUT2 is present mainly in ? #NEET PG #FMGE #INICET #PYQ
Poll
  •   a) Beta cells of pancreas
  •   b) Placenta
  •   c) Skeletal muscle
  •   D)Cardiac muscle
273 votes
17.8k 6 19 17
Physiology

16 Jan, 16:16

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Correct Answer- A
Ans. A. 1-3 mm/min
Human sperm move at a speed of - 3mm/min through the female
genital tract.
Sperms reach uterine tubes 30-60 minutes after copulation
16.3k 0 1 8
Physiology

16 Jan, 15:04

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Correct Answer- A
Ans. A. 1-3 mm/min
Human sperm move at a speed of - 3mm/min through the female
genital tract.
Sperms reach uterine tubes 30-60 minutes after copulation
15.4k 0 5 14
Physiology

15 Jan, 15:03

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Velocity of human sperm - #NEET PG #FMGE #INICET #PYQ
Poll
  •   a) 1-3 mm/min
  •   b) 4-6 mm/min
  •   c) 6-9 mm/min
  •   d) 10-13 mm/min
308 votes
16.7k 2 16 18
Physiology

11 Jan, 13:04

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Correct Answer- B
Ans.B. Posterior lobe
Pituicytes are glial cells of posterior pituitary
15.4k 0 1 10
Physiology

10 Jan, 13:03

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Pituicytes are seen in ? #NEET PG #INICET #PYQ #FMGE
Poll
  •   a) Anterior lobe
  •   b) Posterior lobe
  •   c) Intermediate lobe
  •   D)All
278 votes
17.4k 1 9 25
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