In the city the population was spread out with 20.4% under the age of 18, 4.7% from 18 to 24, 21.3% from 25 to 44, 25.3% from 45 to 64, and 28.3% who were 65 years of age or older. The median age was 48 years. For every 100 females there were 80.5 males.
In human physiology, the muscles of respiration are those muscles that contribute to inhalation and exhalation, by aiding in the expansion and contraction of the thoracic cavity.The diaphragm and, to a lesser extent, the intercostal muscles drive respiration during quiet breathing.n human physiology, the muscles of respiration are those muscles that contribute to inhalation and exhalation, by aiding in the expansion and contraction of the thoracic cavity.
Function. The main tasks of the rectus abdominis muscle and the lateral abdominal muscles are the movement of the trunk, stabilization of the vertebral column and the tensioning of the abdominal wall.They are responsible for the abdominal press increasing the intra-abdominal pressure (e.g. during defecation or vomiting).n particular, the rectus abdominis muscle does a ventral flexion (flexion of the trunk or erection of the pelvis) and thus is an important antagonist of the intrinsic back muscles.