During childhood, the thymus decreases in size, and this is ...

[wenmo]

During childhood, the thymus decreases in size, and this is referred to as what type of atrophy?
 
  a. Physiologic
  b. Pathologic
  c. Disuse
  d. Neurogenic

Question 2

Mutations in the encoding of histone-modifying proteins have been shown to influence the de-velopment of what congenial condition?
 
  a. Cleft palate
  b. Acephalous
  c. Heart disease
  d. Webbed digits

[gcook]

Answer to Question 1

ANS: A
A normal decrease in cell size is physiologic atrophy. Atrophy can result from disease (patholog-ic), disuse, or nerve injury (neurogenic).

Answer to Question 2

ANS: C
Mutations in genes that encode histone-modifying proteins have been implicated in congenital heart disease. Research has yet to provide a relationship between abnormal histone-modifying proteins and cleft palate, acephalous, and webbed digits.

[wenmo]

TYSM

[bitingbit]

Gracias!