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