What is lobule in lungs?

A primary pulmonary lobule is defined as the lung unit distal to the respiratory bronchioles. It is significantly smaller than an acinus, and is composed of alveolar ducts, alveolar sacs and alveoli. It has been estimated that each secondary pulmonary lobule is composed of 30-50 primary lobules.

What does compliance and elasticity mean in the lungs?

It refers to the ability of the lungs to stretch and expand. Lung compliance can be calculated by dividing volume by pressure (C = V/P). Two factors affecting lung compliance are elasticity from the elastin in connective tissue, and surface tension which is decreased by surfactant production.

What is lobule in biology?

Lobule. a subdivision of the lobes of the breast.

What is the lobule made of?

Each lobule is made up of numerous liver cells, called hepatocytes, that line up in radiating rows. Between each row are sinusoids. These small blood vessels diffuse oxygen and nutrients through their capillary walls into the liver cells.

What are lobules in the liver?

The liver lobes are made up of microscopic units called lobules which are roughly hexagonal in shape. These lobules comprise of rows of liver cells (hepatocytes) which radiate out from a central point.

What is lung elasticity?

Lung elasticity (LE) represents the mechanical properties of the lungs. to be expanded (distended) by pressures surrounding or inflating the lungs. and to collapse as soon as the latter pressures disappeared.

What is the difference between compliance and elasticity?

Lung compliance is the volume change that could be achieved in the lungs per unit pressure change. Elastance, also known as the elastic resistance is the reciprocal of compliance, i.e. the pressure change that is required to elicit a unit volume change. This is a measure of the resistance of a system to expand.

What is difference between lobe and lobule?

As nouns the difference between lobe and lobule is that lobe is any projection or division, especially one of a somewhat rounded form while lobule is a small lobe; a subdivision of a lobe.

What is a lobular?

Lobules are the milk-producing glands of the breast. Breast ducts are the thin tubes that carry breast milk from the lobules of the breast to the nipple.

What does lobule mean in medical terms?

Medical Definition of lobule 1 : a small lobe the lobule of the ear 2 : a subdivision of a lobe specifically : one of the small masses of tissue of which various organs (as the liver) are made up

What is meant by elasticity?

When the external forces are removed from the body it tends to regain its original shape and size. Such a property of a material by virtue of which the body tends to regain its original shape, size as a result of removal of external forces is known as the elasticity.

What are elastic properties of lungs?

For the majority of resources which mention them, “elastic properties” usually mean “influences of lung and chest wall on compliance”, which have already bee discussed elsewhere. Occasionally, a textbook might digress on elastance, a related term which seems relevant.

What is the relationship between lung compliance and elastic resistance?

Lung compliance is inversely related to elastance, which is also known as elastic resistance or elastic recoil. So, a patient with low lung compliance will have a relatively stiff lung and, therefore, higher elastance. Two important factors of lung compliance are elastic fibers and surface tension.