There are 12 thoracic vertebrae

The thin sheet that separates the middle ear from the external ear is called the:

A) tympanum. B) eardrum. C) tympanic membrane. D) All of the above

You have been called for a patient with a sickle cell crisis. In reviewing the pathophysiology of sickle cell anemia, you understand that the underlying problem is:

A) the blood is thick and has difficulty circulating. B) there is abnormal hemoglobin formation that cannot carry oxygen. C) the number of white blood cells is abnormally elevated. D) there is a decreased amount of circulating RBCs that do not release O2.