Unit 1 & 2 Flashcards
1: levels of organization, homeostasis, organ systems, directional terms 2: chemistry (78 cards)
anatomy
study of the structures of the body and relationships
physiology
study of the functions of the body parts
Levels of Organization
chemical»_space; cell»_space; tissue»_space; organ»_space; organ systems»_space; organism
homeostasis
body’s attempt to maintain a constant environment despite internal and external disruptions
what systems act out homeostasis
endocrine and nervous system
how is homeostasis maintained
by feedback loops
which feedback loop is a reversal and very common
negative feedback loop
which feedback loop escalates and amplifies
positive feedback loop
integumentary system
protection, senses, temp regulation
mucular system
movement, heat production
skeletal system
protection, support, mineral storage
nervous system
controls body activity, regulates metabolism
immune/lymphatic system
body’s defense against infection, recycling interstitial fluid
endocrine system
maintains homeostasis with the use of hormones
cardiovascular system
carries oxygen & nutrients to body cells
respiratory system
gas exchange, regulation of pH
digestive system
breaks down food & absorbs nutrients
urinary system
rids wastes, maintains pH & regulates body fluids
reproductive
produces gametes (sperm, egg)
what are electron shells arranged into
energy levels
atomic number
number of protons in atom
valence shells
atoms with 8 electrons in its outer shell
mass number
number of protons+neutrons
atoms that have their outer shell filled are not reactive. they are stable
true
