This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What is the critical alpha1-antitrypsin level below which lung elastin is attacked and broken down? ... (Read 90 times)

chads108

  • Hero Member
  • *****
  • Posts: 507
on: Jul 16, 2018
What is the critical alpha1-antitrypsin level below which lung elastin is attacked and broken down?
 
  a. 57 mg/dl
  b. 84 mg/dl
  c. 100 mg/dl
  d. 150 mg/dl

Question 2

The mechanisms of airway obstruction in COPD include which of the following? 1. Airway remodeling 2. Inflammation and obstruction of small airway 3. Loss of elasticity 4. Active bronchospasm
 
  a. 1 and 2 only
  b. 1 and 4 only
  c. 2, 3, and 4 only
  d. 3 and 4 only


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bulacsom

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: A
In the face of a severe deficiency of alpha1-antitrypsin (i.e., when serum levels fall below a pro-tective threshold value of 11 mol/L, or 57 mg/dl), neutrophil elastase may go unchecked, caus-ing breakdown of elastin and resulting dissolution of alveolar walls.

Answer to Question 2

ANS: C
The mechanisms of airflow obstruction in COPD include inflammation and obstruction of small airways (<2 bronchospasm.


chads108

  • Hero Member
  • *****
  • Posts: 507
Reply #2 on: Jul 16, 2018
Correct answers!


bulacsom

  • Sr. Member
  • ****
  • Posts: 329
Reply #3 on: Jul 16, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Schmidt-Nielsen and coworkers demonstrated the route that air travels in the avian (ostrich) lung. Schmidt-Nielsen and coworkers demonstrated the route that air travels in the avian (ostrich) lung.
Lung cancers Lung cancers
The structure of skin (a) and epidermis (b) at the microscopic level. The structure of skin (a) and epidermis (b) at the microscopic level.
Pulmonary embolism. The purple shaded section shows the area of the lung that is dying from lack of ... Pulmonary embolism. The purple shaded section shows the area of the lung that is dying from lack of ...
Ramey's study, children from poverty-level families IQ experiment Ramey's study, children from poverty-level families IQ experiment
A land snail (Helix aspersa) with the opening that leads to its lung visible at the left. A land snail (Helix aspersa) with the opening that leads to its lung visible at the left.
Video: How do the different types of chromatography work? (No Audio)

For a complete list of videos, visit our video library