Studied by 4 people
cell
The basic unit of structure and function in a living thing
cell membrane
forms the outside border of the cell
nucleus
directs the cell’s activities and holds information that controls a cell’s function
cytoplasm
the rest of the cell, made of a clear, jellylike substance that contains many cell structures
tissue
a group of similar cells that perform the same function.
Your body contains several types of …
tissue
muscle tissue
Like the muscle cells that form it, it can contract, or shorten.
Muscle tissue makes part of your body…
move
nervous tissue
directs and controls the process
Nervous tissue carries…
electrical messages back and forth
connective tissue
provides support for your body and connects all its parts
Epithelial tissue
covers the surfaces of your body, inside and out/
such epithelial tissue, such as your skin…
protects the delicate structures that lie beneath it
organ
a structure that is made up of different kinds of tissues
Your stomach, heart, brain, and lungs are all…
organs
organ system
a group of organs that work together, carrying out major functions
each organ in your body is part of an…
organ system (2)
skeleton
Your skeletal system, it includes all the bones in your body.
What makes your body move?
muscles and bones working together
The nervous system tells your…
muscles when to act
skeletal muscles
are attached to the bones of your skeleton and provide the force that moves your bones
joint
is a place in the body where two bones come together
Nutrient
is a substance that you get from food and that your body needs to carry out processes, such as contracting muscles
absorption
a process where nutrients move from the digestive system into the bloodstream
glands
it releases chemical signals directly into the bloodstream
the endocrine system is made up of organs called…
glands (2)
stimulus (plural stimuli)
a signal in the environment that makes you react
response
what your body does in reaction to a stimulus
responses are directed by…
your nervous system but often involve other body systems
hormones
chemical signs released by the endocrine system
hormones are transported through your body by the…
circulatory system
homeostasis
the condition in which an organism’s internal environment is kept stable in spite of changes in the outside environment.
keeping which balance is necessary for an organism to function properly and survive?
homeostasis (2)
all of your body systems working together maintain…
homeostasis and keep the body in balance
stress
the reaction of your body to possibly threatening, challenging, or uncomfortable events
Note 
Flashcard (32)