A normal 3-month-old boy has a hemoglobin of 11.2 g/dL. Which of ...

[tnt_battle]

A normal 3-month-old boy has a hemoglobin of 11.2 g/dL. Which of the following is true about his hemoglobin? It is:
 
  a. Higher than that of a normal full-term newborn
  b. Lower than that of an adult of the same age
  c. Higher than that of a 14 year old of the same sex
  d. The same as that of an adult of the same sex

Question 2

Why is the white count in a normal full-term newborn elevated shortly after birth?
 
  a. A relative loss of plasma occurs.
  b. An absolute increase in neutrophils occurs.
  c. An absolute increase in lymphocytes occurs.
  d. An absolute increase in both neutrophils and lymphocytes occurs.

[canderson530]

Answer to Question 1

ANS: B
Hemoglobin is lower in a 3 month old than that of an adult of the same sex. It is normally higher at birth but quickly begins to decrease so that by 3 months old this would be a normal hemoglobin (abnormal at birth). It is lower than that of both a 14 year old and an adult of the same sex.

Answer to Question 2

ANS: B
An absolute increase in neutrophils occurs within hours of birth; this elevates the white count. Bands and occasionally myelocytes may also be present. At day 2, the count begins to drop progressively, primarily because of an absolute decrease in neutrophils.

[tnt_battle]

TYSM

[olderstudent]

Excellent