Intro to A+P Flashcards
Levels of Organ. AMOCTOOO
1-atom 2-molecule 3-organelle 4-cell 5-tissues 6-organs- 7-organ system 8-organism
atom
smallest thing w/ chem. prop.
molecule
made up of 2+ atoms
organelle
consist in cell
e/ have own fun.
cell
smllst unit of organism that carry out basic fun. of life
tissues
mass of similar cells w/ specific form
organs
composed 2+ tissues
wrk to carry out specific fun.
organ system
grp organs w/ collective fun
organism
a complete individual
characteristics of living organism (COMDEHRR)
organization cellular composition metabolism responsiveness homeostasis dev reproduction evolution
organization for living organism
organ system
cellular comp
have more than 1 cell
metabolism
converting outside mol. into something useful through chem. rxns
responsiveness
react to stimuli (1st step in - response cycle)
homeostasis
ability to maintain internal stability
weakens overtime
dynamic equilibrium
ex. temp
setpoint which values fluctuate around
(the average)
development
change in form or fun.
intrinsic regulation
at tissue and organ lvl
changes sm areas body to prevent further problems
extrinsic regulation
external message
can be neural or hormonal
Ex. message from brain to legs to start running
negative feedback loop
body senses a change + activates response to reverse it
Negative feedback components (SSCMER)
1-stimulus 2-sensor 3-control center 4-message 5-effector 6-response
Negative feedback- stimulus
physical of chem change
Negative feedback-sensor
cell type that detects change
Negative feedback-control center
2 kinds
brain or endocrine
processes info and sends message
Negative feedback-message
neural or hormonal form from control c.
Negative feedback-effector
(can be at any lvl)
receives message by protein binder or receptor
Negative feedback-response
change in act.
