The auditory ossicles are made up of how many bones? A) two B) ...

[DelorasTo]

The auditory ossicles are made up of how many bones?
 A) two
  B) three
  C) four
  D) They are not bones but muscles.

Question 2

Define the terms sickle-cell trait and sickle-cell anemia.

[frejo]

Answer to Question 1

B

Answer to Question 2

Sickle-cell trait is an asymptomatic condition in which the patient received the genetic trait from only one parent. Sickle-cell anemia occurs when a patient received the genetic trait from both parents and, therefore, develops an abnormal type of hemoglobin in the red blood cell, causing decreased oxygenation in the tissues.