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45 Cards in this Set
- Front
- Back
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cell
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Basic unit of structure and function in a living thing.
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structure
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An organism's body plan; how it is arranged.
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function
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The process the organism carries out.
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nucleus
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The control center that directs the cell's activities. It contains the information that determines the cell's characteristics.
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tissue
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A group of similar cells that perform the same function.
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4 different types of tissue
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muscle, nerve, connective, & epithelial
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nerve tissue
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carries messages back and forth between the brain and every part of the body
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connective tissue
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provides support for the body and connects all its parts
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epithelial tissue
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covers the surfaces of the body, inside and out
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organ
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a structure 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
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homeostasis
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body tends to keep things in balance, in spite of changes in the external environment
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stimulus
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Something inside or outside that causes the organism to react
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response
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action or change in behavior that occurs as the result of a stimuls
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stress
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The reaction of your body and mind to threatening, challenging, or disturbing events
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4 major functions of the skeletal system?
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1. It provides shape and support.
2. Enables you to move 3. Protects your internal organs 4. Produces blood cells |
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vertebrae
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The bones that make up your backbone
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marrow
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Soft, connective tissue inside bone; makes red blood cells
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cartilage
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Connective tissue that is more flexible than bone
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joint
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A place in the body where 2 bones come together, allowing movement
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4 kinds of movable joints
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ball and socket, pivot, hinge, & gliding
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osteoporosis
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the body's bones become weak and break easily
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involuntary muscles
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Muscles NOT under our control.
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voluntary muscles
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Muscles under our control.
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3 types of muscle.
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skeletal, smooth, &cardiac
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skeletal muscles
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Muscles attached to the bones.
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tendon
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A strong connective tissue that attaches muscle to bone.
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smooth muscle
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Involuntary muscles found inside many internal organs.
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cardiac muscle
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Involuntary, but striated muscle found in the heart. Unlike skeletal muscles it does not get tired.
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5 functions of the skin
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1. It protects the body from injury and infections.
2. Helps to regulate body tempurature. 3. Eliminates waste. 4. Gather information about the environment. 5. Produce Vitamin D |
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2 main layers of the skin
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Epidermis & Dermis
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Epidermis
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The outside layer of the skin
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melanin
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pigment that gives color to the skin
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dermis
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the lower layer of the skin.
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pores
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openings in the skin
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follicles
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Strands of hair grow out of this skin structure.
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cancer
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Disease in which some cells divide uncontrollably.
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reproductive system
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helps organisms make new organisms |
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integumentary system
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protects the body |
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digestive system
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breaks down food into nutrients to be used by cells |
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respiratory system |
gets oxygen in and carbon dioxide out of body |
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circulatory system |
carries nutrients and gases to cells, carries waste out |
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excretory system
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filters blood; removes waste
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endocrine system |
glands/chemicals/hormones regulates the body |
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nervous system
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receives information and directs the body's response
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