The left lung consists of two lobes: the left upper lobe (LUL) and the left lower lobe (LLL).

What is the function of the primary lobule?

breast lobule The basic functional unit of the mammary gland, consisting of a tree of several intralobular ducts (also called alveolar ducts), each of which can develop a terminal alveolus composed of milk-secreting epithelial cells.

Why is there 3 lobes in the right lung?

The right lung is five centimeters shorter than the left lung to accommodate the diaphragm, which rises higher on the right side over the liver; it is also broader. The volume, the total capacity, and the weight of the right lung is greater than that of the left. The right lung is divided into three lobes.

What is a respiratory lobule?

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.

What are lobes and lobules?

Each breast has 15 to 20 sections, called lobes. They are arranged like the petals of a daisy. Each lobe has many smaller structures called lobules. These end in dozens of tiny bulbs that can produce milk. The lobes, lobules, and bulbs are all linked by thin tubes called ducts.

What is a lobe of the lung definition?

lobe of the lung – any of the three lobes of the right lung or the two lobes of the left lung. lung – either of two saclike respiratory organs in the chest of vertebrates; serves to remove carbon dioxide and provide oxygen to the blood. lobe – (anatomy) a somewhat rounded subdivision of a bodily organ or part; “ear …

What are the 3 lobes of the left lung?

Each lung is composed of smaller units called lobes. Fissures separate these lobes from each other. The right lung consists of three lobes: the superior, middle, and inferior lobes. The left lung consists of two lobes: the superior and inferior lobes.

Does left lung have 3 lobes?

Each lung is separated into lobes branching off the main bronchus; the right lung has three lobes, while the left has only two lobes.

What are the major parts of a lobule of a lung?

Each lobule has been conceptually divided into three components 6:

  • interlobular septal structures.
  • centrilobular structures.
  • lobular parenchyma.