« previous next »

Author Question: Which type of pressure is necessary within the thorax to maintain normal inhalation and expiration? ... (Read 89 times)

khang

  • Hero Member
  • *****
  • Posts: 569
on: Jul 18, 2018
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
Reply #1 on: Jul 18, 2018
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
« previous next »
 

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

An electrocardiogram (ECG, EKG) is a commonly used procedure in which the electrical events associat An electrocardiogram (ECG, EKG) is a commonly used procedure in which the electrical events associat
Measuring jugular venous pressure Measuring jugular venous pressure
Evolutionary ecologists live and do research in contemporary cultures that maintain all or some aspe Evolutionary ecologists live and do research in contemporary cultures that maintain all or some aspe
Carrie Mae Weems, A Negroid Type, from the series From Here I Saw What Happened and I Cried. Carrie Mae Weems, A Negroid Type, from the series From Here I Saw What Happened and I Cried.
Three standard sizes of cuffs: a small cuff for a child or frail adult; a normal-sized adult cuff; ... Three standard sizes of cuffs: a small cuff for a child or frail adult; a normal-sized adult cuff; ...
(a) In normal nerve conduction, sodium ions (Na+) enter the sodium channels along a neuron and ... (a) In normal nerve conduction, sodium ions (Na+) enter the sodium channels along a neuron and ...
Video: Sister chromatids of a metaphase chromosome animation

For a complete list of videos, visit our video library