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What would a glandular structure that has three ducts and flasklike sacs be termed?
This is a multicellular exocrine gland. It is also a compound alveolar (or ascinar) type.
What produces surfactant?
Surfactant is produced by the type II alveolar cells in the lungs. These cells secrete surfactant which helps lower surface tension in the alveoli, preventing collapse and facilitating gas exchange.
In which layer of the alveolar membrane are the cleanup cells located?
The cleanup cells, also known as alveolar macrophages, are located in the alveolar space within the alveolar membrane. They play a crucial role in clearing debris, bacteria, and other particles from the lungs to maintain respiratory health.
Which tooth innervated by two alveolar nerves?
The first molar is usually innervated by two alveolar nerves: the superior alveolar nerves from the maxillary division of the trigeminal nerve.
What is the srtucture between an alveoli and bronchiole?
Air enters the body through the nostrils or the mouth, passing down the throat to the larynx, and then to the trachea. The trachea divides into two branches in the chest cavity, the right and left bronchi that enter the lungs. The branches of the bronchi narrow down to tubes called bronchioles of less than 1 mm diameter, and these sub-divide into even narrower tubes called alveolar ducts. Each alveolar duct ends in a grapelike cluster of thin-walled sacs, called alveoli. From 300 million to 400 million alveoli are contained in each lung.
What is the small tube between the bronchus and the alveoli?
The alveolar duct
Does the alveolar duct contain connective tissue?
The alveolar duct primarily consists of smooth muscle and elastin fibers but contains minimal connective tissue. Its structure is designed to facilitate the passage of air to the alveoli, where gas exchange occurs. While there is some connective tissue present to provide support, it is not a major component of the alveolar duct's architecture.
What Respiratory tubes are smaller connect the bronchi to the alveolar ducts and contain no cartilage?
bronchioles
What respiratory tubes are smaller connect the bronchi to the alveolar ducts and contains no cartilage?
bronchioles
What is the direction of movement of gas between the blood and the alveolar duct?
Gas moves by diffusion from areas of high concentration to areas of low concentration. In the lungs, oxygen moves from the alveolar ducts into the blood in the capillaries, while carbon dioxide moves from the blood into the alveolar ducts to be exhaled.
What is a gland composed of cells arranged in a blind pocket with a single duct that does not branch?
The gland you're describing is a simple acinar gland. It consists of secretory cells arranged in a spherical or flask-like structure with a single unbranched duct that carries the secretions to the surface. This type of gland is common in structures like the salivary glands and sebaceous glands.
Distinguish between a simple gland compound gland tubular gland and alveolar gland?
A simple gland consists of a single unbranched duct, while a compound gland has a branched duct system. Tubular glands have a tube-like structure, while alveolar glands have a round, sac-like structure. Alveolar glands are also known as acinar glands and contain clusters of secretory cells that form small sacs.
Inhaled air passes through which of the following last?
It goes: trachea Mainstem Bronchus lobar bronchus segmental bronchus bronchiole Alveolar duct Aveolus
Surfactant helps to prevent the alveoli from collapsing by what?
Interfering with the cohesiveness of water molecules, thereby reducing the surface tension of alveolar fluid.
What is the structure of alveolar ducts?
it dissolves oxygen in the fluid and from there it can diffuse to the alveolar cells.It goes right back to evolution where single cells have to absorb oxygen from water.All of our cells systems ae aquatic.
What would a glandular structure that has three ducts and flasklike sacs be termed?
This is a multicellular exocrine gland. It is also a compound alveolar (or ascinar) type.
Trace molecule of oxygen from the external nares to the pulmonary capillaries of the lungs?
nose - nasal cavity - larynx - trachea - primary bronchus - secondary bronchi - tertiary bronchi - terminal bronchi oles - respiratory bronchioles - alveoli - alveolar sacs the alveolar sacs contain the pulmonary capillaries. the actual gas exchange occur here by simple diffusion. O2 goes from the lungs into the O2 depleted RBC.
