metabolism (redirected from substance metabolism)

metabolism /me·tab·o·lism/ (mĕ-tab´ŏ-lizm)

1. the sum of all the physical and chemical processes by which living organized substance is produced and maintained (anabolism), and also the transformation by which energy is made available for the uses of the organism (catabolism).

2. biotransformation.metabol´ic,

---

basal metabolism  the minimal energy expended to maintain respiration, circulation, peristalsis, muscle tonus, body temperature, glandular activity, and the other vegetative functions of the body.

---

me·tab·o·lism (m-tb-lzm)

n.

1. The complex of physical and chemical processes occurring within a living cell or organism that are necessary for the maintenance of life. In metabolism some substances are broken down to yield energy for vital processes while other substances, necessary for life, are synthesized.

2. The functioning of a specific substance, such as water, within the living body.

---

Metabolism

All the physical and chemical changes that occur in cells to allow growth and maintain body functions. These include processes that break down substances to yield energy and processes that build up other substances necessary for life.

Mentioned in: Amino Acid Disorders Screening, Antidiabetic Drugs, Beriberi, Carbohydrate Intolerance, Diabetic Ketoacidosis, Interactions, Electrolyte Supplements, Enzyme Therapy, Fever, Galactosemia, Hypercalcemia, Hypothermia, Insulin Resistance, Pharmacogenetics, Phenylketonuria, Selective Serotonin Reuptake Inhibitors

---

metabolism

[mətab′əliz′əm]

Etymology: Gk, metabole, change, ismos, process

the aggregate of all chemical processes that take place in living organisms, resulting in growth, generation of energy, elimination of wastes, and other body functions as they relate to the distribution of nutrients in the blood after digestion. Metabolism takes place in two steps: anabolism, the constructive phase, in which smaller molecules (such as amino acids) are converted to larger molecules (such as proteins); and catabolism, the destructive phase, in which larger molecules (such as glycogen) are converted to smaller molecules (such as glucose). Exercise, elevated body temperature, hormonal activity, and digestion can increase the metabolic rate, which is the rate determined when a person is at complete rest, physically and mentally. The metabolic rate is customarily expressed (in calories) as the heat liberated in the course of metabolism. See also acid-base metabolism, anabolism, basal metabolism, catabolism.

---

metabolism (m·taˑ·b·li·zm),

n the combined sum of the chemical processes occurring in a living organism. It is separated into anabolism, a process that results in the consumption of energy, and catabolism, a process that releases energy.

---

metabolism (metab´ōlizm),

n the sum of chemical changes involved in the function of nutrition. There are two phases: anabolism (constructive or assimilative changes) and catabolism (destructive or retrograde changes).

metabolism, basal,

n See basal metabolic rate.

metabolism, bone,

n the continual complex of anabolism and catabolism taking place in bone when it is in physiologic equilibrium. Bone is a highly labile substance that reflects the adequacy of general body metabolism. See also bone, alveolar, metabolism.

metabolism, cell,

n the complexity of anabolic and catabolic processes occurring within cellular structures.

metabolism, energy,

n the transformation of energy in living tissues, consisting of anabolism (storage of energy) and catabolism (the dissipation of energy).

metabolism, substance,

n the physical and chemical processes by which living organized tissues are produced and maintained.

---

metabolism

the sum of the physical and chemical processes by which living organized substance is built up and maintained (anabolism), and by which large molecules are broken down into smaller molecules to make energy available to the organism (catabolism).

Essentially these processes are concerned with the disposition of the nutrients absorbed into the blood following digestion.

---

inborn error of metabolism

a genetically determined biochemical disorder in which a specific enzyme defect produces a metabolic block that may have pathological consequences at birth, as in maple syrup urine disease of calves, or in later life, e.g. in mannosidosis in calves. See also metabolic defect.

---

Patient discussion about substance metabolism.

Q. How is it possible to have permanent weight loss if dieting slows down metabolism? well, i know that eating less will have the body adjust to the new calorie intake and thus, no further weight loss. So how is it possible to have permanent weight loss if eating less doesn't work? Please give tips and suggestions, people who have successfully lost weight. thanks so much!

A. You touch an aching fact…our body is a genius machine that is built to save energy. When we loose fat tissue it stops sending a hormone named “Leptin” that is a one of the hormones that control our metabolism. The idea is to know this fact and continue with your diet as planed. A well balanced diet that is followed with regular physical effort will not loose weight as fast as it did on the first 2 months, but it’ll eventually do so. After loosing weight the important thing is to continue the life style you adapted until your body will regulate the amount of leptin it needs. Leptin is the cause people gain back their weight after a diet.

Q. How does coffee affect a diet? does it have an affect on metabolism? on losing weight?

A. Well, coffee can increase and to accelerate the beginning of burning fat during exercise (usually only after 20-30 minutes of exercise), but the overall effect is not that substantial. YOu should remember that it makes your kidney to produce more urine, so you should drink more.

Q. What benefits does yoga have on nutritional disorder? I've heard yoga can help "organize" the daily nutrition and the metabolism? Is it true? Does anyone know how it does it?? Unfortunately I deal with nutrition issues all day long and would love to find something to make it go away...

A. I am not sure I know of any relation between yoga and organizing daily nutrition.. Yoga is a very good physical activity for back problems, muscle pain and flexibility, and it does make you burn some calories via using your muscles, however it is not an aerobic physical activity and it does not help burn fat like running, riding a bike or swimming.