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

Author Question: Which of the following best describes what happens when the lungs expand? A) Contraction of the ... (Read 63 times)

mcmcdaniel

  • Hero Member
  • *****
  • Posts: 550
on: Jul 4, 2018
Which of the following best describes what happens when the lungs expand?
 A) Contraction of the muscles of inspiration pushes the diaphragm up, causing air to flow into the lungs.
  B) Contraction of the muscles of inspiration decreases the volume of the thorax, causing a decrease in pressure (Boyle's law).
  C) Expansion of the thorax causes the lungs to expand as a function of the negative intrapleural pressure between the parietal and visceral pleurae.
  D) None of the above.

Question 2

An adults has a larger respiratory capacity than an infant. Which of the following best explains this capacity difference?
 A) An adult has a larger thorax
  B) The adult lung is stretched to fill the thorax
  C) The adult can voluntarily expand his or her lungs
  D) a & b
  E) a & c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lin77x

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 4, 2018
Answer to Question 1

C

Answer to Question 2

D


mcmcdaniel

  • Member
  • Posts: 550
Reply 2 on: Jul 4, 2018
YES! Correct, THANKS for helping me on my review

sarah_brady415

  • Member
  • Posts: 328
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Lungs Anatomy Model Lungs Anatomy Model
Larynx, trachea, bronchi, and lungs with an expanded view showing the structures of an alveolus and Larynx, trachea, bronchi, and lungs with an expanded view showing the structures of an alveolus and
Regulation of muscle contraction by tropomyosin and troponin Regulation of muscle contraction by tropomyosin and troponin
Calcium channels and muscle contraction: (a) Calcium channels open as the action potential travels ... Calcium channels and muscle contraction: (a) Calcium channels open as the action potential travels ...
The heart and its major blood vessels. Oxygen-rich blood is pumped from the lungs to the left The heart and its major blood vessels. Oxygen-rich blood is pumped from the lungs to the left
Video: Role of the respiratory system - effect of altered ventilation rates

For a complete list of videos, visit our video library