Pulmonary surfactant begins to appear in the embryo around the
A) 8th week.
B) 18th week.
C) 28th week.
D) time of birth.
Correct Answer:
Verified
Q47: Where would you find the trachealis muscle?
A)Between
Q48: The embryonic respiratory diverticulum is formed from
A)ectoderm.
B)mesoderm.
C)endoderm.
Q49: Which is not a regulatory center for
Q50: Approximately how long after birth do alveoli
Q51: Contraction of these muscles depresses the ribs,but
Q53: During embryonic development,the conducting portion of the
Q54: Following an automobile accident,a broken rib penetrates
Q55: During the development of the respiratory system,the
Q56: This muscle extends across the inner surface
Q57: Following an automobile accident,a broken rib penetrates
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