20 terms

Chapter 1 Human Body Systems

STUDY
PLAY
cell
the basic unit of all living things
tissue
a group of cells working together
organ
different tissues working together to perform a specific function
organ system
a group of organs working together
muscle tissue
moves body parts by contracting (shortening)
nervous tissue
send messages to the brain and body
connective tissue
supports and connects parts of the body
epithelial tissue
covers and protects parts of the body
joint
where two bones meet
nutrient
the "good stuff" in food
ex. vitamins, minerals
absorption
how nutrients get into the body
stimulus
something that makes you react
response
how your body reacts to a stimulus
homeostasis
maintaining balance or a stable environment in the body
stress
the body's response to a threatening situation
epidermis
the outer layer of skin
dermis
an inner layer of skin that contains nerves and blood vessels
digestive system
breaks down food so the body can use it
endocrine system
controls the body's functions
circulatory system
transports oxygen to the cells of the body