Category: M

Activities that use large muscle groups and are at least equivalent to brisk walking. Moderate physical activity is activity that uses approximately 150 calories of energy per day, equivalent to walking 2 miles in 30 minutes. This produces significant health benefits but not physical fitness.  

Having to do with metabolism.  

Contractile (thick and thin) proteins responsible for muscle contraction. A filament within the myofibrils of muscle cells. Thick ones are made of myosin; thin ones are made of actin, troponin, and tropomyosin.  

The amount of oxygen used by the heart muscle to produce energy for contraction.  

Force developed when a contracting muscle acts on an object.  

Cell organelles in which the Krebs cycle, electron transport, and oxidative phosphorylation take place.  

The amount of air inspired or expired each minute, or the pulmonary ventilation rate per minute; calculated as tidal volume times frequency of breathing.  

Elements not of animal or plant origin that are essential constituents of all cells and of many functions in the body.  

Smallest vessels of the vascular system, including small arterioles, capillaries, and small venules. Blood flow through arterioles, venules, and capillaries. Blood flow in the very small vessels (arterioles, capillaries, and venules). The flow of blood through the tiniest blood vessels within the body, such as the capillaries found in the hand and fingers.  

A sequence of enzyme-mediated chemical reactions resulting in a specified product. The chemical changes that a substance undergoes in its passage through the body, metabolism. The sequence of chemical reactions that occur as a substance is metabolized. A consecutive arrangement of chemical reactions that progress from a precursor to a final product, with each step’s…