This topic contains a solution. Click here to go to the answer

Author Question: Lung tissue receives oxygen and nutrients from the A) pleural arteries. B) pulmonary arteries. C) ... (Read 95 times)

swpotter12

  • Hero Member
  • *****
  • Posts: 527
Lung tissue receives oxygen and nutrients from the
 A) pleural arteries.
  B) pulmonary arteries.
  C) pulmonary veins.
  D) coronary arteries.
  E) bronchial arteries.

Question 2

List the different types of adrenergic receptors, the responses they produce, and by what mechanisms.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

debra928

  • Sr. Member
  • ****
  • Posts: 342
Answer to Question 1

E

Answer to Question 2

There are two types of alpha receptors and two types of beta receptors. The alpha-1 receptor produces excitation or stimulation of metabolism. It works by activation of an enzyme and/or by release of calcium ion from internal stores. The alpha-2 receptor is inhibitory on its target cell by reducing the level of cAMP. Beta-1 receptors are stimulating and/or lead to increased energy consumption. They activate cellular enzymes. Beta-2 receptors inhibit activity or produce relaxation in smooth muscle cells. They operate through enzyme activation.





 

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

For a complete list of videos, visit our video library