The Integumentary System, Part 1 - Skin Deep: Crash Course A&P #6
SUBBABLE MESSAGE••• TO: Ciaran FROM: your sister Jillian Happy birthday! Hope you enjoy being immortalized via doobly-doo! *** You can directly support Crash Course at http://www...
========== When you hear about your “organs,” you
probably think of your heart, or your liver,or your lungs. Maybe you picture Captain Nemo
playing the organ aboard the Nautilus. Whydo they have an organ on a submarine? That
is - that doesn’t make any sense.But your first associations with that term
probably overlook your biggest organ.I’m talking about your skin.The glorious fleshy shroud that keeps the
world out, and you in.Your skin protects your body against infection
and extreme temperatures, maintains your balanceof fluids, and even synthesizes vitamin D
for your own personal use.Its many nerve endings allow you to sense
the outside world, and its sweat glands andblood vessels help you maintain a proper temperature
and communicate a whole range of stuff -- fromyour health...