A 42-year-old man presents with a 1 x 1 cm white patch on the lateral surface of his tongue. Based solely on this information, clinical differential diagnosis should include:
a. Frictional hyperkeratosis
b. Hairy leukoplakia
c. Idiopathic leukoplakia
d. All the above
e. None of the above
D
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Which tissue covers the body and lines all of its cavities?
a. Nervous b. Connective c. Muscle d. Epithelial
Tipping outward of the scapula:
a. is known as winging b. occurs during protraction of the shoulder c. results from rotation of the scapula d. all of the above
Which of the following correctly describes the relative refractory period?
A) It is the period in which only a strong impulse can cause another depolarization. B) It is the period in which the heart function stops temporarily to allow impulse transmission to occur. C) It is the period in which no impulses at all can cause another depolarization. D) It is the period in which even a weak impulse can cause another depolarization.
Capillary walls are only one cell thick, so oxygen can pass out of the blood, and waste material can pass into the blood.
Answer the following statement true (T) or false (F)