Author Question: Which type of pressure is necessary within the thorax to maintain normal inhalation and expiration? ... (Read 118 times)

khang

  • Hero Member
  • *****
  • Posts: 569
Which type of pressure is necessary within the thorax to maintain normal inhalation and expiration?
 
  a. Negative
  b. Positive
  c. Internal
  d. Blunt

Question 2

Which ribs have no fixation anteriorly?
 
  a. 5th, 6th, and 7th ribs
  b. 7th and 8th ribs
  c. 8th, 9th, and 10th ribs
  d. 11th and 12th ribs



kswal303

  • Sr. Member
  • ****
  • Posts: 316
Answer to Question 1

ANS: A
Negative, or subatmospheric, pressure is needed to avoid pressure changes that can be caused by openings in the thoracic wall. An uncontrolled opening in the thoracic wall can cause pressure change and be fatal.

Answer to Question 2

ANS: D
Although ribs 3 through 7 articulate with the main sternal body, and the 8th through 10th ribs join anteriorly to the above ribs' cartilage, the 11th and 12th ribs have no anterior fixation.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

For a complete list of videos, visit our video library