« previous next »

Author Question: What are the free-wandering phagocytic cells that ingest foreign material in the respiratory zone of ... (Read 43 times)

Haya94

  • Hero Member
  • *****
  • Posts: 558
on: Jul 16, 2018
What are the free-wandering phagocytic cells that ingest foreign material in the respiratory zone of the lungs?
 
  a. Alveolar macrophages
  b. Granular pneumocytes
  c. Type I cells
  d. Type II cells

Question 2

Where are the largest alveoli found in the lung?
 
  a. Lingula
  b. Apexes
  c. Bases
  d. Middle


katieost

  • Sr. Member
  • ****
  • Posts: 358
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: A
Macrophages are another common cell found in the alveolar region. They can move from the pulmonary capillary circulation by squeezing through openings in the alveolar septa and then move out onto the alveolar surface. They are defensive cells that patrol the alveolar region and phagocytize foreign particles and cells (e.g., bacteria).

Answer to Question 2

ANS: B
Alveoli found in the apical regions of the vertical lung have greater diameters than those in the basal regions as a result of the gravitational effects. Those in the basal regions are partially col-lapsed as a result of the weight of the organ.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Compartments within (a) animal and (b) plant cells Compartments within (a) animal and (b) plant cells
The life history of T cells The life history of T cells
The respiratory system. The respiratory system.
Comparison of free energies of hydrolysis of thioesters and oxygen esters Comparison of free energies of hydrolysis of thioesters and oxygen esters
Respiratory volumes Respiratory volumes
Video: Electrical changes in the heart

For a complete list of videos, visit our video library