Question | Answer |
Anatomy | structure of body |
Physiology | study of processes, how and why they work |
Pathophysicology | study of how diseases occur and body's response |
Cells | basic unit of all living things microscopic vary in shape and size perform different functions carry on all functions of life |
Cell membrane | outer protective covering semi permeable: selective in allowing substances in and out of the cell |
Cytoplasm | surrounds the nucleus gel-like fluid inside cell contains water, salts,and protein site of all chemical reactions in cell |
Nucleus | mass in cytoplasm "brain" of cell controls cell activity important in cell division |
Nucleolous | "protein factory" inside nucleus important in cell reproduction contains ribosomes: RNA and protein |
Chromatin | inside the nucleus contain DNA and protein condenses to form chromosomes human cell has 46 chromosomes, 23 pairs: genes |
Centrosome | inside cytoplasm near nucleus contain 2 centrioles/separate in cell division and form fivers that attach the chromosomes |
Mitochondria | "furnace" or "powerhouse" rod shaped organelles located throughout cytoplasm |
Golgi Apparatus | stack of membrane layers in cytoplasm produces, stores, packages secretions for discharge from the cell |
Endoplasmic Reticulum | fine network of tubular structures in cytoplasm transports materials in and out of nucleus aids in synthesis/storage of protein |
Mitosis | A-sexual cell reproduction used by most cells some continuously (skin, blood), every few years (muscles), don't reproduce (brain cells) |
Meiosis | process by which sex cells reproduce decreases to 23 chromosomes so that new cell has 23 pairs |
Tissues | cells of same type joined together for a common purpose made of water and dissolved materials |
Types of tissues | epithelial (skin) connective (soft, hard, liquid) nerve (neurons) muscle (skeletal, cardiac, visceral |
Epithelial | function: covers surface of body forms lining of intestines, respiratory, circulatory, and urinary tract forms glands |
Connective | function: supports organs and other parts |
Connective types | Soft *adipose-fatty tissue: insulates *fibrous-ligaments/tendons: hold structures together |
Connective types | Hard *cartilage-tough elastic material: located b/w bones, @ end of long bones, ears, and nose *bone-osseous tissue: forms rigid body structure |
Connective types | Liquid *lymph-transports tissue fluid *blood-circulates oxygen and carbon dioxide |
Nerve | *made of cells "neurons" *controls & coordinates body activities *nerves, brain, & spinal cord are composed of nerve tissue |
Muscle | *produces power 3 main types *skeletal- attaches to bone *cardiac- heart *visceral (smooth)- found in walls of respiratory, digestive, blood vessels, and urinary tract |