Category: Ra-Re

More appropriately called interphase. The interval in the cell cycle between two cell divisions when the individual chromosomes cannot be distinguished, interphase was once thought to be the resting phase but it is far from a time of rest for the cell. It is the time when DNA is replicated in the cell nucleus.

1. Repose. Relaxation.2. A fragment of embryonic tissue that has been retained after the period of embryonic development. Also called an embryonic rest.

A virus that causes mild respiratory infections, colds, and coughs in adults and can produce severe respiratory problems, including bronchitis and pneumonia, in young children and anyone with compromised immune, cardiac, or pulmonary systems. Abbreviated RSV. RSV is spread via respiratory secretions and is highly contagious. Infections usually occur during annual community outbreaks, often lasting 4 to 6 months,…

The number of breaths per minute or, more formally, the number of movements indicative of inspiration and expiration per unit time. In practice, the respiratory rate is usually determined by counting the number of times the chest rises or falls per minute. The aim of measuring respiratory rate is to determine whether the respirations are normal, abnormally…

The condition in which the lungs cannot take in sufficient oxygen or expell sufficient carbon dioxide to meet the needs of the cells of the body. Also called pulmonary insufficiency.

Formerly known as hyaline membrane disease, a syndrome of respiratory difficulty in newborn infants caused by a deficiency of a molecule called surfactant. RDS almost always occurs in newborns born before 37 weeks of gestation. The more premature the baby is, the greater is the chance of developing RDS. RDS is more likely to occur in newborns of…

Respiratory depression: another term for hypoventilation, meaning that ventilation of the lungs is inadequate to perform needed gas exchange. Sometimes a respiratory rate of fewer than 12 breaths per minute is used as a definition of respiratory depression. Hypoventilation leads to an increased concentration of carbon dioxide in the blood (hypercapnia) and respiratory acidosis (a decrease in blood pH). Respiratory depression can result from a number of different disease processes.…

Having to do with respiration.

The act of inhaling and exhaling air in order to exchange oxygen for carbon dioxide.

The process of losing substance. For example, when bone is surgically reshaped, it undergoes both new formation and resorption.