The morphological structure of human beings.
8
votes
1answer
559 views
Why can hair grow without limit while eyebrow cannot?
I cut my eyebrow and it grows until reach a certain length. Hair can grow without limit.
Why can hair grow without limit while eyebrow cannot?
9
votes
2answers
436 views
Will humans and animals be harmed by frequencies outside their hearing range?
The human ear (for example) is sensitive to frequencies from 20Hz to 20kHz. Any sound beyond that limit would not be heard by us naturally.
Will it harm us (effect our ability to hear) when we hear ...
4
votes
2answers
126 views
Extraretinal photoreception in mammals? [duplicate]
A Finnish firm Valkee sells light-ear-plugs against thing such as jetlag. I asked a researcher in Aalto university how do they really work and he responded ...
2
votes
0answers
37 views
How much does a human brain's metabolic rate vary? [duplicate]
Possible Duplicate:
How does brain energy consumption depend on mental activity?
Our brains consume about 20% of our energy when we're at rest. How variable is a human brain's energy ...
16
votes
2answers
240 views
Why would diffusion be faster across a non-specialised tissue?
The standard protocol for a person experiencing chest pains is to chew a 300mg aspirin tablet, the argument being that chewing rather than swallowing the tablet results in the aspirin entering the ...
2
votes
1answer
82 views
Circulation through the liver in light of drug metabolism
I have a lingering question which stems from an answer that I gave to What hydrolyses aspirin within the digestive tract and blood stream?
When a drug or any other substance is absorbed into the ...
