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Grisell Ch 6
Body Composition
| Question | Answer |
|---|---|
| The body's relative amounts of fat and fat-free mass | Body composition |
| All the body's nonfat tissues: bone, water, muscle, connective tissue, organ tissue, and teeth | Fat-free mass |
| Fat incorporated in various tissues of the body that is critical for normal body functioning | Essential Fat |
| Tissue in which fat is stored; fat cells | Adipose tissue |
| Fat located under the skin | Subcutaneous fat |
| Fat located around major organs | Visceral Fat |
| Is the number of fat cells in a person variable? | No, you have a genetically determined number of fat cells-- they simply swell or shrivel |
| How many calories is a pound of body fat? | 3500 calories |
| What percentage of essential fats does a woman have? | 12% |
| What percentage of essential fats does a man have? | 3% |
| Why do women have a higher percentage of essential body fat? | Fat deposits in the breasts, uterus, and other sex-specific sites |
| Overweights BMI range | 25 to 29.9 |
| Obese BMI range | 30+ |
| List problems associated with being underweight | Reproductive, respiratory, circulatory, and immune system disorders; premature death; amenorrhea; loss of bone mass |
| Absent or infrequent menstruation, sometimes related to low levels of body fat and excessive exercise | Amenorrhea |
| A condition consisting of three interrelated disorders: abnormal eating patterns, amenorrhea, and decreased bone density | Female athlete triad |
| How is BMI calculated | kg / m^2 |
| Measures the percentage of fat and fat-free weight from body density | Underwater weighing |
| Measures the percentage of body fat by calculating body density from how much air is displaced by the person sitting in the chamber (plethysmography) | The Bod Pod |
| A simple, inexpensive, and tedious way to asses body composition by using a caliper to measure fat on different parts of the body | Skinfold measuring |
| Measures body fat by sending a small electrical current through the body and measuring the body's resistance to it (lower resistance = lower fat mass) | Bioelectrical impedance analysis |
| Calculates body composition by measuring the tissue absorption of high and low energy X-ray beams | DEXA: dual-energy X-ray absorptiometry |
| Calculates lean body mass by passing a body through a magnetic field | TOBEC: total body electrical conductivity |
| The most common type of diabetes | Type 2 |
| Risk factors for type 2 diabetes | Smoking, low-fiber diet, overweight/obesity, inactivity |
| Diabetes where the pancreas produces little or no insulin | Type 1 |
| Diabetes where the pancreas doesn't produce insulin, cells are resistant to insulin, or both | Type 2 |