click below
click below
Normal Size Small Size show me how
Zoobrats ch.1 3rd ed
ch 1 review
Question | Answer |
---|---|
Cardiac muscle fibers | small, striated, involuntary fibers that enable the heart to pump blood. |
Smooth muscle fibers | neither striated nor voluntary |
Skeltal muscle fibers | made up of large, cross-striated cells connected to the skeleton and under voluntary control of the nervous system |
Elastic fibers | extensible and elastic-They are made from a protein called elastin, which returns to its original length after being stretched |
Muscle tissue | provides movement, maintains posture, and produces heat. |
Reticular fibers | delicate connective tissue fibers that occur in networks, which support small structures such as capillaries, nerve fibers, and the basement membrane. |
Collagenous fibers | strong fibers with minimal stretch capacity. They have a high degree of tensile strength, which allows them to withstand longitudinal stress. |
collagen | is the most abundant protein compound, accounting for more than one fourth of the protein in the body. |
Connective tissue | specialized to support and hold together the body and its parts, to transport substances through the body, and to protect it from foreign substances. |
A membrane | thin, sheetlike layer of tissue that covers a cell, an organ, or a structure; that lines tubes or cavities; or that divides and separates one part from another. |
basal surface | tissue surface that faces the inside of the body is known as the |
Epithelial tissue | covers and protects the surfaces of the body |
A tissue | group of similar cells that usually have a similar embryologic origin and that are specialized for a particular function. |
Atrophy | decrease in cell size. |
Hypertrophy | increase in the size of a cell |
Meiosis . | special form of mitosis that halves the number of chromosomes in reproductive cells |
Interphase | the period when the cell grows and carries on most of its activities |
Mitosis | occurs when the cell divides, (the process by which the cell reproduces itself). |
cell | basic structural and functional unit of a living organism |
exocytosis. | Transporting substances out of the cell |
endocytosis | Bringing substances into the cell by forming vesicles |
Diffusion | movement of ions and molecules from an area of higher concentration to that of a lower concentration |
Organelles | basic structures of the cells, and they perform specific functions within the cell. |
pH | measurement for acidity / alkalinity of a solution |
Enzymes | proteins that speed up chemical reactions but are not consumed or altered in the process |
ATP | adenosine triphosphate |
Anabolism | chemical reaction that uses energy as it joins simple molecules together to form more complex molecules. |
catabolism | chemical reaction that releases energy as it breaks down complex compounds into simpler ones |
Metabolism | refers to the chemical reactions in the body |
Molecules | the smallest parts of a substance that can exist independently without losing the physical and chemical properties of that substance |
atom | smallest particle of an element that retains the properties of that element. |
Surface anatomy_ | study of internal body structures as they can be recognized and related to the overlying skin surface |
Systemic anatomy_ | study of the body divided into its systems |
Regional anatomy | study of all of the structures of a particular area. |
Gross anatomy | study of body structures large enough to be visible to the naked eye. |
Physiology | scientific study of the processes and functions of the body that support life. |
Anatomy | scientific study of the structures of the body and the relationship of its parts |