chapter 27 and 28
Terms
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- noninfectious diseases
- not contageous
- infectious disese
- contagious
- pathogen
- causees contaguos diseases
- immunity
- reststance to a disease
- t-cell
- cell that matures in thymus
- b-cell
- makes antibodies
- macrophage
- engulfs microorganisms and virisus
- antibody
- protien that detects specific pathogens
- allergy
- reaction to a harmless antigen
- autoimmune
- disease, immune system atacks bodys own cells
- cancer
- certin body cells divide at an uncontrolable rate
- nutrient
- nourish body, essential to life
- carbohydrate
- main source of energy, made of 1 or more simple sugars
- protien
- nutrients builds and repairs body.
- fat
- nutrient, stores energy and helps store some vitamines
- mineral
- essential to good health
- vitamin
- organic compounds,control many body functions
- drug
- chemical substance, causes physical and emotional change
- addiction
- physical dependence on a drug
- nicotine
- chemical stimulant in tabaco, increases heart rate and blood pressure
- alcholism
- physically and mentally dependent on alcohol
- norcotic
- drugs made of opium
- hygiene
- methods of preserving ans protecting your health
- aerobic exercise
- vigorous exercisse of the whole body 20 minutes or more
- stress
- physical and mental response to pressuse
- homeostasis
- the maitnece of a stable internal environment
- tissue
- a group of similar cells that work together to perform a specific job
- organ
- a combonation of two or more tissue that work together tp perform a specific function
- system
- a group or organs that work together to do a specific job
- bone
- a tissue that gives strength and structure
- muscle
- tissue that has the ability to move(contract and expand)
- nerve
- budle of axon, blood vessels and connective tissue
- cartilage
- a felixble tissue that gives support and protection but is not rigid
- ligament
- a strong band of tissue that connects bone to bone
- tendon
- tough connective tissue that connects skeletal muscle to bones