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Medical student in the United Kingdom, having previously studied Biology at A-Level. I spend a good deal of my time volunteering with St John Ambulance, which I find fantastically rewarding and when I'm not writing essays I'm handling flags here on Bio.SE.


1d
comment Why does rabies cause hydrophobia?
Related question
Apr
20
comment Width of vein in finger
Venous anatomy is highly variable from the start, there will also be changes with age and activity - I think this will b to calculate
Apr
20
comment Chronic fatigue causes low parasympatheticus and high sympatheticus in allergies
Malaise means feeling generally unwell, fatigue is a state of tiredness
Apr
8
comment Manifestations of open foramen ovale in adults
Clubbing?
Apr
8
comment Manifestations of open foramen ovale in adults
I think what you may be thinking of is Eisenmenger's Syndrome though you should also read through the Cyanotic Heart Defects section. Can you also clarify what you mean by "COPD-hypoxic-nails"?
Apr
8
comment Manifestations of open foramen ovale in adults
As I recall the 30% of patients are only probe patent and therefore of little significance in terms of blood mixing under normal conditions where right sided pressure is lower than left sided (therefore RA will NOT flow into LA). They are at higher risk of stroke from paradoxical embolism (which does cross through the PFO). I'm not convinced by any of those bullet points as your original premise is off - a PFO will not cause a 50% shunt right to left.
Mar
31
comment Nervous System : Organ or Gland Failure
@WYSIWYG Adrenal Medulla?
Mar
20
comment How do cellphones calculate heart rate?
I asked a related question on Skeptics recently and was pointed to this work - it appears to be detecting changes in skin colour related to heart rate.
Mar
15
comment Does the lung absorb organic food?
Not well - see aspiration pneumonia - small amounts of food would be dealt with without too much problem, simply being coughed up. Lung tissue isn't designed to digest or absorb so I can't imagine it being anywhere near effective in this regard
Mar
12
comment Why ducklings are yellow?
Good to know that they're still alarmingly cute with their natural colourings though!
Mar
11
comment Many spermatozoa, but just one ovum
I'm not sure to be honest, some definitely wouldn't (for example loss of the acrosome) whilst others could potentially make it with reduced chances (minor tail defects etc.)
Mar
11
comment Many spermatozoa, but just one ovum
In addition to motility - up to 70% of sperm can be abnormal forms and this is still considered normal.
Mar
9
comment What constitutes the determination of a normal blood glucose level?
Summarising some of the bare bones of the document would actually improve your answer - admittedly the WHO website isn't likely to disappear overnight but files can be moved/renamed etc.
Mar
8
comment Do recessive alleles really exist?
A selection of related questions: what makes a gene dominant or recessive, why are some genes dominant to each other? and relative properties of alleles.
Mar
2
comment What are the highest and lowest possible pH, paCO2, and HCO3 in the blood of living human?
You should look for the standard reference ranges for arterial blood gases, which will give you your answer
Feb
24
comment What is the current consensus, if any, about why long term potentiation is not clearly correlated with learning?
I think this needs to be expanded upon to be a useful answer
Feb
22
comment Does a neuron ever generate an action potential without stimuli?
Pacemaker cells in the heart might be an example for you
Feb
20
comment Regarding kidney transplant
@AtlLED I'm not following you?
Feb
15
comment Why are transcripts translated from 5' to 3' direction?
Related: Why does DNA replication go from 5' to 3' biology.stackexchange.com/questions/477/…
Feb
15
comment Cloning of a sheep.. Dolly?
@katherinebridges if this has answered your question, you can mark it as your accepted answer using the green tick