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30 Cards in this Set

  • Front
  • Back
cell membrane
the outside boundary of a cell; controls which substances can enter and leave the cell
nucleus
the control center of the cell that directs the cell's activities; contains the chemical instructions that directs all the cell's activities and determine the cell's characteristics
cytoplasm
the region of the cell located inside the cell membrane or between the cell membrane and the nucleus; contains a gel-like material and cell organelles
nerve tissue
a body tissue that carries messages back and forth between the brain and every other part of the body
muscle tissue
a body tissue that contracts or shortens,making body parts move
connective tissue
a body tissue that provides support for the body and controls all of its parts
epithelial tissue
a body tissue that covers the surfaces of the body, inside and out
organ
a structure in the body that is composed of different kinds of tissue
organ system
a group of organs that work together to perform a major function in the body
homeostasis
the process by which an organism's internal environment is kept stable in spite of changes in the external environment
stress
the reaction of a person's body and mind to threatening, challenging, or disturbing events
vertebrae
the bones that make up the backbone of an animal
marrow
the soft tissue that fills the internal spaces in bone
cartilage
a connective tissue that is more flexible than bone and that gives support to some parts of the body
joint
a place where 2 bones come together
ligament
strong connective tissue that holds together the bones in a movable joint
osteoporosis
a condition in which the body's bones become weak and break easily
involuntary muscle
a muscle that is not under your control
voluntary muscle
a muscle that you can control
skeletol muscle
a muscle that is attatched to the bones of the skeleton
tendon
strong connective tissue that attatches a muscle to a bone
smooth muscle
an involuntary muscle that is found inside many internal organs of the body
cardiac muscle
muscle tissue found only in the heart
epidermis
the outermost layer of the skin
melanin
a pigment that gives its skin its color
pores
an opening through which sweat reaches the surface of the skin
follicles
a structure in the dermis of the skin from which a strand of hair grows
dermis
the lower layer of the skin
cancer
a disease in which some body cells grow and divide uncontrollably, damaging the parts of the body around them
acne
a bacterial infection of the skin in which the oil glands become blocked and swollen