Sweatology


 * Excretory System (Skin, Sweating)
 * When the body is dehydrated, your skin gets sunburned
 * When the temperature is hot, but not extremely hot, the blood vessels on your skin send sweat into the air.
 * When the body’s owner decides to exercise, the muscles generate too much heat for the air to absorb. (Sweatology)
 * When normal, persistent temperatures increases, internal temperatures decrease and loses more salt so that the body can readjust.
 * Body Temperature Regulation (Nervous and Endocrine System)
 * Temperature-sensing nerves in the skin and the body’s interior tell the brain to unleash a flow of sweat for heavy-duty evaporation and cooling when temperatures are in upper 90's or when a person decides to exercise. (Sweatology)
 * The bigger the sweat glands, the more copious your sweat is(more sensitive to nerve stimuli, a nerve sends a signal from the brain to the sweat gland to secrete sweat)
 * When does the brain send a signal via the nerve to the sweat gland? When nerves in the skin detect temperature nd send a signal to the brain when skin is too hot.
 * When the skin is at a temperature in the 90s (whether the heat source is internal-muscles contract they generate heat which is a porduct of cellular respiration) or the stimulis can be external like the weather and the signal is sent to the brain vi a nerve.
 * Circulatory System (Heart and Blood Vessels)
 * The normal human has 2 million sweat glands
 * Some humans can have up to 4 million
 * Humans that sweat alot can have glands five times larger than the normal size. (Sweatology)
 * Medical Consequences of Heat Stress
 * Heat Stroke
 * Elderly people have smaller sweat glands therefore can't and don't sweat too much so they are most likely to have heat strokes in extreme heat.
 * Heat cramps
 * Heat Exhaustion
 * Water
 * When the body is dehydrated, your skin gets sunburned.
 * When the body is not hydrated, it cannot sweat easily
 * Salt
 * The body needs to take in alot of salt so that it can react with the sweat glands.
 * The hotter it is, more salt i used for sweat
 * Salt
 * The body needs to take in alot of salt so that it can react with the sweat glands.
 * The hotter it is, more salt i used for sweat


 * Sweatology Article**

//sweat:// interior coolant why do we sweat? when we work out, the muscles generate too much heat and our bodies need to be cooled down in order to keep functioning. (also happens when temperatures reach the 90's). temperature-sensing nerves in the skin and brain tell the body to release water to cool us.

two million - 4 million sweat glands, depending on the human

women sweat more than men obese people may differ
 * especially during menopause, ovulation
 * 1) fat may insulate the interior
 * 2) compromises heat transfer
 * 3) grow more sweat glands

global warming: what will happen to our sweat glands? //acclimation//
 * at first, sweat more and lose more salt and water
 * as time goes on, body becomes more accustomed to the heat
 * endurance will improve over time

Nina G. Jablonski Craig Candrall
 * Scientists**