Card Set Information
Ancestors left Africa
150,000-200,000 years ago
loss of heat to a cool surface
warm layer of air around you exchanges with cool layer of air; cold feeling.
carries heat away from your body, raises heat in the room
shortening and thickening of body parts; rule of attenuation
increased surface are to mass in hot climes
1 degree/gram of substance/degree celcius
chemical analysis and regulation
sodium and potassium
to urniate away sodium
who has it?
north and south of 66 degrees 30 minutes
20 degrees of either side of the equator
prob with gas exchange at 0 humidity
membrane between vessel and airsac must be moist
mucus covered surface area inside the nose for moistues
flat face: wind chill effect; why?
low pressure sucks out heat
how much extra weight deos the female need?
Asian cold adapptiaions
epicathic eye fold
no or reduced sinusus
flaired cheek bones
1 lb of fat =
two meals; 800 cal
frogs do what in winter?
cell membrane made of:
unsaturated fatty acids
austrailian aboriginies cold sleep cycle length
white people response to cold
length of cycle?
ionising radiation (3)
3000 meters/10,000 feet
skin unctions 3
acid mantle- protection
synthasis-vit. D, hormones
holesterol, folic acid
how mant air sacs?
how many more for high altitude adaptation?
sea level RBC
high altitude RBC
how many O2 can hemoglobin carry?
square feet of capillare surface area?
75 square feet
hypoxia; mountain sickness
makes you make more red blood calls
in bone marrow
high altiue person at sea level problem
trial and error eating
what makes craving/drive
communication between the hypothalamus and cortex; face
# of people
rate of consumption
after is was eaten
three levels host-parasite co-evolution
new cases of disease per unit time
number of cases at a time
animal born infections
2 kinds of immunity
general- general/keeps out
adaptive immunity of skin and mucos membranes (3)
compliments- opsonins "dressings", MAC (membrane attack complex)
"dressings" process (3)
macrophage eats it
2 kinds of macrophages
equals hydrostatic pressure of the heart
two halves of adaptive immunity
moms antibodies in her...
cholostrom and milk
B-cell system; new pathogen process in a nut shell (3)
keep memory cells
skip clonal selection
T-cell system when? (3)
pathogen goes inside a cell
kick in B-cell system
Go wrong with immune system? (3)
hypo-immunity- nutrition/genetic (antivodies are made of protien)
auto -immune- no see self-marker
type 1 reaction
magic number for people groups? We they reality/ face recognition stops
number one guy in agg society
city with salt and no agg.
band to agriculture
territoriality to boundary
alters the breeding structure of a population (3)