lecture 1- evolution Flashcards
name 4 types of tissues & their function
epithelial- exchange of materials
connective: connects, supports & anchors
muscular: contraction & force generation
nervous: transmission of electrical impulses
what did guts evolve from?
unicellular protists
name 2 types & guts
- blind-ended: cavity, temporal variation, like a blender
jellyfish, corals & flatworms have this type - through-put: tube, spatial variation
humans & animals
digestion -> assimilation-> egestion
T or F: homeostasis is a fixed state
false, it is dynamically steady state
what does buffering mean?
constant state & able to tolerate changes
T or F: homeostasis uses a negative feedback loop
T
what are 2 forms of regulation of homeostasis
negative feedback loop
reset systems
what is a negative feedback loop
trigger drives variable in opposite direction of initial change
what is a secondary feedback loop?
anticipatory systems
T or F: acclimatization is slow, indirect responses like seasonal hair change
T
T or F: reset systems changes set point of neg feedback system
T
T or F: antagonist control is heating & cooling
T
3 types of effectors & their function
regulators: thermoregulation
avoiders: migrating animals
conformers: internal state varies with environment
T or F: blind-ended guts have maximal assimilation of nutrients
F, through-put do
T or F: gland cells secrete digestive enzymes
T
