Muscle physiology: Physiology is the study of the function of living systems, the mechanical, physical, and biochemistry of function and energy transfer. Muscle physiology is concerned with the types of muscle tissues (of which there are three). Here I discuss skeletal muscle specifically.ach muscle fiber in a motor unit is of the same type; hence, motor units are divided into fast and slow units. Generally speaking, slow motor units are innervated by small, slowly conducting motor neurons and fast units by large rapidly conducting motor neurons.
Top 10 Causes of Death. Heart disease and stroke were the leading causes of death in 2001, regardless of countries' incomes, the study shows. However, other leading causes of death differed depending on countries' incomes. Here is the list for high-income countries: 1  Heart disease. 2  Stroke. 3  Lung cancer. 4  Lower respiratory infections. 5  Chronic obstructive pulmonary disease (COPD). 6  Colon and rectum cancers. 7  Alzheimer's disease.
Deaths: Leading Causes for 2014 [PDF - 3.5 MB] Deaths, percent of total deaths, and death rates for the 15 leading causes of death: United States and each State. Mortality in the United States, 2015. Changes in the Leading Cause of Death: Recent Patterns in Heart Disease and Cancer Mortality.