Application Question 7-Abestos

 

Application Question 7

• Due Feb 11 by 11:59pm
• Points 10
• Submitting a text entry box
• Available until Mar 26 at 1pm

This assignment was locked Mar 26 at 1pm.

Now that you have had an opportunity to reflect on this question and get some ideas from colleagues, take this opportunity to more formally record a response...

Pretend you’re called as an expert witness in a court case about asbestos. The person suing (the plaintiff) worked in an asbestos mine in Canada and says it is now hard for him to breathe due to exposure to asbestos. As an expert witness, use your A&P knowledge to describe to the judge how the asbestos could relate to the plaintiff's difficulties.  You should...

Describe two different membranes that you think are likely impacted, including where those membranes are located, what specific tissue types they're are made of, and how you think the presence of spiky asbestos within those membranes could inhibit their normal functions.

You might want to open another window to go to earlier pages in this module and remind yourself of where asbestos can go to in the body.

Mostly Complete (10 pts): Describe mucous membranes and serous membranes in terms of their locations and cell/tissue composition.  Please be specific regarding tissue types (e.g., what type of epithelial or what type of connective tissue)!  Make a prediction (at least a guess!) at how the functions of those membranes might be impeded if stiff, spiky asbestos was embedded within them.

Partially Complete (6 pts): Mucous and serous membranes identified, but one of above details missing.

 

                 When asbestos fibers are inhaled, they can reach the alveoli, a tiny air sac of the lungs. Asbestos fibers are not only penetrate the pleura but also reach the alveoli. The pleura consists of a serous membrane, composed of a layer of simple squamous cells called mesothelium which is supported by connective tissue. The pleura located double-layered membrane in the thoracic cavity covers the lungs called parietal pleura and visceral pleura consist of a serous membrane.The pleura acts as protective barrier, reducing friction during lung movement and facilitating efficient breathing.  

                When inhale asbestos fibers, that spiky asbestos fibers embedded within mucous membranes and serous membranes. Asbestos fibers stuck on the alveoli  cause chronic inflammation and damage to the alveolar cells and endothelial cells.Asbestos fibers can lead to fibrosis and scarring of the epithelial lining.Fibrosis develops within  squamous epithelial cells that form the alveolar walls .Asbestos fibers on cells affect blood flow within the alveolar  membrane. Chronic inflammation leading to thickening of the pleura that caused reduce the pleura’s elasticity and impair lung expansion follow by impaired gas diffusion, reducing the efficiency of oxygen uptake and carbon dioxide removal so that the patient presenting with breathing difficultly progressive shortness of breath.