Ch. 1 vocabulary
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47 terms
Terms | Definitions |
|---|---|
 levels of organization | cells, tissues, organs, organ system |
| basic unit of structure and function in a living thing | cell |
| forms the outside boundary of a cell | cell membrane |
| control center of a cell that directs all of the cells activities | cell nucleus |
| material within a cell apart from the nucleus- clear; jelly-like | cytoplasm |
| group of similar cells that perform the same function | tissue |
| a type of tissue that can contract, shorten, and carries out movement | muscle tissue |
| a type of tissue that directs and controls the process | nervous tissue |
| a type of tissue that provides support for your body and connects all of the parts | connective tissue |
| a type of tissue that covers the inside and outside of your body | epithelial tissue |
| system in your body that contains all of the organs that work together and perform a major function | organ system |
| structure composed of different kinds of tissue | organ |
| stomach, heart, brain, and lungs | types of organs |
| body's tendency to keep an internal balance | homeostasis |
| reaction of your body to potentially threatening, challenging, or disturbing event | stress |
| framework of your body | skeleton |
| small bones along your spine- 26 of them | vertebrae |
| place where 2 bones come together- allow bones to move different ways | joint |
| hold together bones in movable joint using connective tissue | ligaments |
| the 2nd type of connective tissue in a joint | cartilage |
| layers in a bone | compact bone, spongy bone, marrow |
| mineral loss in the body | osteoporosis |
| break in the bone | fracture |
| end of bone comes out of the joint | dislocation |
| occurs when ligaments are stretched to far and my tear in some places | sprain |
| form of energy tat travels in waves and allows you to see your bones | x-rays |
| MRI stands for | magnetic resonance imaging |
| allows a person to see images of their body tissue and muscles | MRI |
| disease where you are unable to move your joints without pain | arthritis |
| slim, tube-shaped instrument | arthroscope |
| muscles that are not under conscious control | involuntary muscles |
| muscles that are under conscious control | voluntary muscles |
| skeletal, smooth, cardiac | types muscle tissues |
| attached to bones of the skeleton | skeletal muscle |
| strong connective tissues attached to muscles or bones | tendon |
| another name for skeletal muscles | striated muscle |
| muscle tissue inside internal organs | smooth muscle |
| muscle tissue found only in the heart | cardiac muscle |
| layers of skin | dermis and epidermis |
| outer layer of skin | epidermis |
| 2nd (fatter) layer of skin | dermis |
| colored substance or pigment produced by the epidermis | melanin |
| strands of hair that grow within the dermis | follicles |
| sweat leaves the body (in respiration) in these structures | pores |
| disease where some cells in the body divide | cancer |
| 3 ways to care for your skin | healthy diet, keeping skin clean, and limiting sun exposure |
| what vitamin does the skin provide | Vitamin D |
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