Ask MetaFilter questions tagged with organs

All the basic units of life.

kisch mokusch — Thu, 08 Mar 2007 03:01:41 -0800

I'm interested in cells. As many different types as can be identified, and the more specific the better. Preferably mammalian, certainly vertebrate (otherwise the the list would be too big!). Sound references desirable (or, failing that, a brief description of which organ they can be found in).

e.g.
Dendritic Epidermal T cells: T cells found in the skin of mice (but not humans). Nat. Med.

Ideally the answers would be from biologists/reasearchers who have experience with the particular cell(s) they mention. I've already seen the wikipedia list, and although at first glance it seems impressive, it has a lot of errors, and is lacking references. So first-hand knowledge is highly desirable.

Quality over quantity.

Wildlife Porn

goalyeehah — Sun, 24 Dec 2006 19:52:15 -0800

Is there a species (mammal, reptile, amphibian, etc.) that has two functioning sexual organs? Some one here at the party insists that there is a species in which both male and female has two of each (specifically two penis' for the male and two vaginas for the male. I personally would like to settle this topic before the presents are opened and before too much champagne is imbibed. It could get ugly here. Googling this isn't working.

Inhibitory post synaptic effects in the PNS?

j-urb — Sun, 29 Jan 2006 16:33:22 -0800

Biopsychology extra credit question and I have no idea... "Why do you suppose activation of the first synapse of the parasympathetic nervous system produces excitatory post synaptic effects, but activation at some target organs produce inhibitory post synaptic effects (i.e. slowing down organ activity)?"