Created by
Students also viewed
HV FINAL
85 terms
Chapter 5 quiz
25 terms
Acclimatization
12 terms
all bio 1 notes
513 terms
Chapter 2
14 terms
breathing/ventilation
10 terms
Terms in this set (18)
complex traits
-most traits result from interaction of multiple genes and the environment
-polygenic traits
-polygenic traits
genetic adaption
genetic changes in a population that occur over many generations as result of natural selection.
-not all traits are adaptions
-not all traits are adaptions
acclimatization
long term physiological changes that occur in response to environmental stress
developmental acclimatization
changes in organ or body structure during the growth of an organism
physiological acclimatization
physiological change that occurs over days or months
acclimation
short term physiological response to an environmental stress.
-minutes to hours
-minutes to hours
adaptions to cold temp.
stress: keeping our internal organs warm enough
acclimation:
-shivering
-increased metabolism
acclimation:
-shivering
-increased metabolism
cold:Physiological acclimatization
-further metabolic increase
-vasoconstriction
-cycling of heat to form extremities
-vasoconstriction
-cycling of heat to form extremities
Cold:genetic Adaptions
-narrow high nasal pressure
-eye folds and cheek pads
-stocky body form and shorter appendages
-eye folds and cheek pads
-stocky body form and shorter appendages
Bergmann's Rule
more mass is better in colder areas
Allen's Rule
-mammals in cold climates tend to have shorter nd bulkier limbs, less loss of body heat
In cold temperature
Humans have variable responses to cold, using vasoconstriction and subcutaneous fat differently
Heat response
stress: body must remove heat
acclimation:
-sweat
-vasodilation: increased blood circulation to the skin
acclimation:
-sweat
-vasodilation: increased blood circulation to the skin
Heat: physiological acclimatization
-decreased heart rate
-increased plasma in blood
-increased sweating
-increased plasma in blood
-increased sweating
heat: adaptions
-elongated bodies
-longer appendages
-longer appendages