Science Test Chapter 1 Book 2
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Created by:
emmasweetpie on April 17, 2012
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47 terms
Terms | Definitions |
|---|---|
 cell | basic unit of structure and function in living things |
| cell membrane | outside boundary of the cell |
| muscle tissue | tissue that contracts or shortens, making body parts move |
| nervous tissue | carries electrical messages between the brain and every other part of the body |
| conective tissue | provides support for the body and connects 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, composed of different kinds of tissue |
| organ system | group of organs that work together to perform a specific function |
| homestasis | the process by which an organisms internal enviormental is kept stable in spite of changes in external enviorment |
| stress | a reaction of disrupting homeostasis |
| nucleus | the control center that directs the cells activities and contains the info to determine the cells form and function |
| cytoplasm | material between the cell membrane and the nucleus |
| tissue | a group of similar cells that perform the same function |
| spongy bone | layer of Bone tissue having many small spaces and found just inside the layer of compact bone |
| osteoporsis | a condition when bones become weak and break easily |
| marrow | the fatty network of connective tissue that fills the cavities of bones |
| compact bone | hard, dense bone tissue that is beneath the outer membrane of a bone |
| cartilage | a connective tissue that is more flexible than bone |
| ligament | strong connective tissue that holds bones together in movable joints |
| joint | a place in the body where two bones come together |
| vertebre | 26 bones down your back that make up your back bone |
| skeleton | the inner framework made up of all the bones of the body |
| tendon | strong connective tissue that attaches muscle to bone |
| voluntary muscle | a muscle that is under conscious control |
| involuntary muscle | a muscle that is not under conscious control |
| smooth muscle | involuntary muscle found in internal organs |
| cardiac muscle | muscle tissue found only in the heart |
| straiated muscle | a muscle that is bannded/skeletal muscle |
| skeletal muscle | A muscle that is attached to the bones of the skeleton and provides the force that moves the bones. |
| epidermis | outer layer of skin |
| melanin | a pigment that gives the skin its color |
| dermis | inner layer of skin |
| cancer | a disease in which some of the body cells divide uncontrollably |
| pore | an opening through which sweat reaches the surface of the skin |
| follicle | a structure in the dermis of the skin from which a strand of hair grows |
| circulatory system | transports materials to and from cells |
| skeletal system | supports and protects the body |
| digestive system | breaks down food and absorbs nutrients |
| nervous system | detects information from the environment and controls body functions |
| endocrine system | controls many body processes by means of chemicals |
| respiratory system | takes in oxygen and eliminates carbon dioxide |
| muscular system | enables movement of the body and internal organs |
| excretory system | removes wastes |
| hinge joint | the joint that moves like a door (knee, elbow) |
| ball and socket joint | allows you to swing limb freely in a circle (shoulder, hip) |
| pivot joint | allows one bone to rotate around another (head and neck) |
| gliding joint | allows one bone to slide over another + limited side movements (wrist, ankle) |
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