BARR JB Cells&Micro
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Created by:
j20b6barrett on September 29, 2009
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44 terms
Terms | Definitions |
|---|---|
 tissue | a group of similar cells that work together to do a specific job in the body |
| organ | a collection of tissues working together to perform a specific job in the body |
| organ system | a group of organs that work together to perform body functions |
| organsim | a living thing |
| structure | the arrangement of parts in an organism |
| function | the special, normal, or proper activity of an organ or part |
| cell membrane | barrier between the inside of a cell and its environment |
| organelles | structures a cell uses to live, grow, and reproduce |
| nucleus | the control center of the cell |
| prokaryotic | cells that do not have a nucleus |
| eukaryotic | cells that have a central nucleus and complicated inner structure |
| cell | the smallest unit that can perform life processes |
| cell wall | plants and algae have a hard outer surface made of cellulose |
| ribosome | organelles at which amino acids are hooked together to make proteins |
| endoplasmic reticulum | system of membranes that produce, process and transport proteins |
| mitochondria | the cell's power plants; breaks down food molecules to make ATP |
| Golgi complex | organelle that modifies, packages, and transports materials out of the cell |
| vesicle | small cavity or sac that contains materials in eukarotyic cells |
| lysosome | special vesicles that contain enzymes |
| eyepiece | contains the lens you look through; the top part of the microscope |
| body tube | the hollow tube through which light passes; also maintains the correct distance between the lenses |
| nosepiece | holds the objective lenses and rotates to change the magnification |
| objective lens | several objective lenses, each having a different magnification |
| stage | supports the object (microscope slide) being viewed |
| stage clips | used to hold the microscope slide in place |
| diaphragm | changes the amount of light that enters the body tube |
| mirror or light source | used to send light up through the hole in the stage, the object , and the lenses |
| base | supports the microscope and is used to carry it; the bottom part of the microscope |
| arm | supports the body tube and is used to carry the microscope |
| fine adjustment knob | moves slightly to sharpen the image while focusing |
| coarse adjustment knob | turns to raise and lower the body tube or stage or focusing |
| integumentary system | skin, oil and sweat glands, hair, finger nails, toe nails; set a boundary from outside and inside |
| cardiovascular & circulatory system | heart, arteries and veins |
| heart | pumps blood throughout body |
| arteries | take oxygen out from heart |
| vein | return blood with carbon dioxide |
| respiratory system | lungs, nose, pharynx, larynx, trachea (wind pipe) |
| lymphatic system | gets rid of germs; thymus, tonsils, spleen, lymphatic vessels |
| digestive system | breaks down food we eat into nutrients; mouth, liver, esophagus, pancreas, small and large intestines, stomach |
| urinary system | remove waste from body; kidney, ureters, urethra, bladder |
| nervous system | brain, spinal cord, nerves, sense organs; receives and transmit what is happening |
| endocrine system | pituitary, thyroid and adrenal gland, pancreas, ovary, testes, chemical messengers in our body that controls other body parts |
| muscular system | smooth, voluntary, involuntary; provides movement for body |
| skeletal system | 206 bones, supports the skin and protects internal organs; with muscular system creates movement for body |
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