Lung FAQs:


Q: Are lungs the primary organs of the respiratory system in humans and many other animals including a few fish and some snails?

A: Yes.

Q: Are lungs filled with fetal lung fluid?

A: Yes.

Q: Are lungs surrounded by the pulmonary pleurae?

A: Yes.

Q: Is lung bigger than the left?

A: Yes, and which shares space in the chest with the heart.

Q: Is lung surrounded by a serous membrane of visceral pleura?

A: Yes, and which has an underlying layer of loose connective tissue attached to the substance of the lung.

Q: Are lungs filled with fluid secreted by the lungs and are not inflated?

A: Yes.

Q: Is lung inflamed for a long period of time?

A: Yes.

Q: Are lungs part of the lower respiratory tract that begins at the trachea and branches into the bronchi and bronchioles?

A: Yes, and which receive air breathed in via the conducting zone.

Q: Is lung divided into two lobes?

A: Yes, and an upper and a lower, by the oblique fissure, which extends from the costal to the mediastinal surface of the lung both above and below the hilum.

Q: Is lung the intercellular signalling protein – sonic hedgehog?

A: Yes, and fibroblast growth factors FGF10 and FGFR2b, and bone morphogenetic protein BMP4.

Q: Is lung indented by a number of nearby structures?

A: Yes.

Q: Is lung enclosed within a pleural sac which allows the inner and outer walls to slide over each other whilst breathing takes place?

A: Yes, and without much friction.

Q: Are lungs part of the lower respiratory tract?

A: Yes, and accommodate the bronchial airways when they branch from the trachea.

Q: Are lungs located in the chest on either side of the heart in the rib cage?

A: Yes.

Q: Is lung the dynein protein DNAH5 in ciliated cells?

A: Yes, and the secreted SCGB1A1 protein in mucus secreting goblet cells of the airway mucosa.

Q: Are lungs involved in the blood's acid-base homeostasis by expelling carbon dioxide when breathing?

A: Yes.

Q: Are lungs located near the backbone on either side of the heart?

A: Yes.

Q: Are lungs not capable of expanding themselves?

A: Yes, and will only do so when there is an increase in the volume of the thoracic cavity.

Q: Are lungs supplied by nerves of the autonomic nervous system?

A: Yes.

Q: Are lungs inflated by expanding the rib cage?

A: Yes.

Q: Is lung an arched groove for the azygos vein, and above this is a wide groove for the superior vena cava and right brachiocephalic vein?

A: Yes, behind this, and close to the top of the lung is a groove for the brachiocephalic artery.

Q: Are lungs simpler in structure?

A: Yes, and similar to that of typical amphibians.

Q: Are lungs called "circulatory lungs"?

A: Yes, as distinct from the "bellows-type lungs" found in most other animals.

Q: Is lung greatly reduced?

A: Yes, or even absent.

Q: Is lung shown in the table?

A: Yes.

Q: Are lungs formed the fetus is held in the fluid-filled amniotic sac and so they do not function to breathe?

A: Yes.

Q: Are lungs seen as a developmental adaptive stage from water-living to enable land-living?

A: Yes, or from fish to amphibian.

Q: Are lungs very undeveloped with only around one sixth of the alveoli of the adult lung present?

A: Yes.

Q: Are lungs gas exchange between the lungs and the blood?

A: Yes.

Q: Is lung divided into lobes by the infoldings of the pleura as fissures?

A: Yes.