Structural Level: chemical - Answer smallest level
ex) atoms: smallest level that displays properties
Structural level; cell - Answer basic unit of life
ex) organelles w/ specialized functions for the cell
Structural level: tissue - Answer group of cells with similar structure and function plus
extracellular substance
ex) epithelial, connective, muscle, nervous
,Structural level: organ - Answer 2 or more tissue types
ex) skin, heart, stomach, etc
Structural level: organ system - Answer groups of organs
Structural level: organism - Answer all structural levels working together
Structural level hierarchy - Answer chemical > cell > tissue > organ > organ system >
organism
Integumentary system - Answer Protection, maintain H20 content
Skeletal system - Answer protection, support, movement
Muscular system - Answer movement, posture, heat
> cardiac, skeletal, smooth
Lymphatic system - Answer AKA immune system
antibodies, lymph
Respiratory system - Answer gas exchange
ventilate: bring air in/out
respiration: feed cells O2
Digestive system - Answer take in nutrients, metabolize food
, Nervous system - Answer chief regulator
brain, spinal cord, nerves
Control other systems
Endocrine system - Answer regulator of body
hormones/proteins/glands
Cardiovasular system - Answer transport
heart, vein (to heart), artery (away from heart)
Urinary system - Answer removes waste; kidneys
Characteristics of life - Answer 1) organization: structural levels/coordination
2) metabolism: ability to use energy (dig/resp system); all chemical rxn in body
3) responsiveness (aka irritability): ability to sense changes in environment and make
adjustment (shiver in cold weather)
4) growth: increase in size (constant rebuild/remake bones)
5) development: changes in cell structure/function from generalized to specialized
6) reproduction: formation of new cells/new organisms
Homeostasis - Answer - maintenance of constant internal environment (ex: body temp,
BP, HR, BR)
- Variables: conditions that change (ex: enviro temp)
Set point-Answer ideal, normal value ( not the same for everyone)
- goes along with metabolism
- react to being off-balance
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