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

Author Question: What is the major source of respiratory tract secretions in the normal lung? a. Bronchial glands ... (Read 125 times)

Jkov05

  • Hero Member
  • *****
  • Posts: 556
on: Jul 16, 2018
What is the major source of respiratory tract secretions in the normal lung?
 
  a. Bronchial glands
  b. Clara cells
  c. Goblet cells
  d. Mast cells

Question 2

What can the release of histamine and other chemical mediators from the mast cells in the air-ways cause? 1. Bronchoconstriction 2. Bronchodilation 3. Vasoconstriction 4. Vasodilation
 
  a. 2 and 4 only
  b. 1 and 3 only
  c. 2 and 3 only
  d. 1 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

zogaridan

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: A
Normally, the respiratory tract produces approximately 100 ml of mucus per day. Most of the mucus formed in the larger airways is produced by the bronchial glands.

Answer to Question 2

ANS: D
Mast cells are also found in the submucosa and release numerous and potent vasoactive and bronchoactive substances such as histamine. Histamine causes vasodilation and bronchocon-striction, acting directly on smooth muscle.


Jkov05

  • Member
  • Posts: 556
Reply 2 on: Jul 16, 2018
Excellent

brbarasa

  • Member
  • Posts: 308
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Major causes of hospitalization Major causes of hospitalization
Location of major biodiversity hot spots around the world. Location of major biodiversity hot spots around the world.
Otitis media. This illustration shows an inflamed tympanic cavity, which is the most common source o Otitis media. This illustration shows an inflamed tympanic cavity, which is the most common source o
Cerebral angiography. The four angiograms each reveal the distribution of blood vessels supplying th Cerebral angiography. The four angiograms each reveal the distribution of blood vessels supplying th
Trump coverage in major news networks Trump coverage in major news networks
Basic Food Groups and Their Major Nutrients Basic Food Groups and Their Major Nutrients
Video: Cardiac conductile cells

For a complete list of videos, visit our video library