When the diaphragm and external intercostal muscles contract, A) ...

[sammy]

When the diaphragm and external intercostal muscles contract,
 A) the volume of the thorax increases.
  B) the volume of the thorax decreases.
  C) the volume of the lungs decreases.
  D) the lungs shrink.
  E) expiration occurs.

Question 2

Which of the following correctly states how a gustatory receptor will be stimulated by an acidic or sour compound?
 A) G proteins will be activated.
  B) Hydrogen ions will diffuse into the receptor cell causing depolarization.
  C) Sodium ions will diffuse into the receptor cell causing depolarization.
  D) Second messengers will be activated.
  E) Adenylate cyclase will be activated.

[carolinefletcherr]

Answer to Question 1

A

Answer to Question 2

C

[sammy]

Wow, this really help

[Viet Thy]

Thanks for the timely response, appreciate it