Term
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Definition
| The body cavity in mammals that primarily houses parts of the digestive, excretory, and reproductive systems. It is separated from the more cranial thoracic cavity by the diaphragm. |
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| basal metabolic rate (BMR) |
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Definition
| The minimal number of kilocalories a resting animal requires to fuel itself for a given time. |
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Definition
| The floor of an epithelial membrane on which the basal cells rest. |
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Definition
| A type of connective tissue, consisting of living cells held in a rigid matrix of collagen fibers embedded in calcium salts. |
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Definition
| A type of flexible connective tissue with an abundance of collagenous fibers embedded in chondroitin. |
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Definition
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Definition
| A tough fiber of the extracellular matrix. Collagenous fibers are made of collagen and are nonelastic and do not tear easily when pulled lengthwise. |
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Definition
| Referring to organisms that do not produce enough metabolic heat to have much effect on body temperature. |
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Definition
| A long thread made of the protein elastin. Elastic fibers provide a rubbery quality to the extracellular matrix that complements the nonelastic strength of collagenous fibers. |
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Definition
| Referring to organisms with bodies that are warmed by heat generated by metabolism. This heat is usually used to maintain a relatively stable body temperature higher than that of the external environment. |
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Definition
| Sheets of tightly packed cells that line organs and body cavities. |
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Definition
| A type of cell in loose connective tissue that secretes the protein ingredients of the extracellular fibers. |
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Definition
| The internal environment of vertebrates, consisting of the fluid filling the spaces between cells. |
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Definition
| A type of fibrous connective tissue that joins bones together at joints. |
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Term
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Definition
| A membrane that suspends many of the organs of vertebrates inside fluid-filled body cavities. |
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Definition
| Smooth moist epithelium that lines the digestive tract and air tubes leading to the lungs. |
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Term
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Definition
| Tissue consisting of long muscle cells that are capable of contracting when stimulated by nerve impulses. |
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Term
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Definition
| A primary mechanism of homeostasis, whereby a change in a physiological variable that is being monitored triggers a response that counteracts the initial fluctuation. |
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Definition
| Tissue made up of neurons and supportive cells. |
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Term
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Definition
| A nerve cell; the fundamental unit of the nervous system, having structure and properties that allow it to conduct signals by taking advantage of the electrical charge across its cell membrane. |
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Term
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Definition
| A bone-forming cell that deposits collagen. |
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Term
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Definition
| The repeating organizational unit forming the microscopic structure of hard mammalian bone. |
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Term
| skeletal muscle (striated muscle) |
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Definition
| Muscle generally responsible for the voluntary movements of the body. |
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Term
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Definition
| A type of muscle lacking the striations of skeletal and cardiac muscle because of the uniform distribution of myosin filaments in the cell. |
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Term
| standard metabolic rate (SMR) |
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Definition
| The metabolic rate of a resting, fasting, and nonstressed ectotherm. |
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Term
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Definition
| A type of fibrous connective tissue that attaches muscle to bone. |
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Term
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Definition
| The body cavity in mammals that houses the lungs and heart. It is surrounded in part by ribs and separated from the lower abdominal cavity by the diaphragm. |
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