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Cell Key Terms
Anatomy and Physiology Words/Definitions
Question | Answer |
---|---|
Anatomy | the study of the form and structure of an organism. |
Cell | the basic unit of structure and function in all living things. |
Cell Membrane | the outer protective covering of the cell. |
Centrosome | located in the cytoplasm and near the nucleus. It contains two centrioles. |
Chromatin | located in the nucleus and made of deoxyribonucleic acid (DNA) and protein. During cell reproduction, it condenses to form rodlike structures called chromosomes. |
Connective Tissue | the supporting fabric of organs and other body parts. There are two main classes of it: soft and hard. |
Cytoplasm | a semifluid inside the cell but outside the nucleus. It is the site for all chemical reactions that take place in the cell, such as protein synthesis and cellular respiration. |
Dehydration | a condition that occurs when there is an insufficient amount of tissue fluid. |
Edema | a condition, or swelling of the tissues that occurs when there is an excess amount of tissue fluid. |
Endoplasmic Reticulum | a fine network of tubular structures located in the cytoplasm. It allows for the transport of material into and out of the nucleus, and also aids in the synthesis and storage of proteins. There is a rough and a smooth.(Rough contains ribosomes) |
Epithelial Tissue | covers the surface of the body and is the main tissue in the skin. Forms the lining of the intestinal, respiratory, circulatory, and urinary tracts as well as that of other body cavities and it also forms the body glands. |
Genes | the structures that carry inherited characteristics.Each chromosome contains between 30,000 to 45,000 of them. |
Genome | the total mass of genetic instruction humans inherit from their parents. It consists of strings of DNA nucleotides. |
Golgi Apparatus | a stack of membrane layers located in the cytoplasm. It produces, stores, and packages secretions for discharge from the cell. |
Lysosomes | oval or round bodies found throughout the cytoplasm. The contain digestive enzymes that digest and destroy old cells, bacteria, and foreign materials. They also fuse with stored food vacuoles to convert food to that can be used by mitochondria to make ATP |