Development Of Respiratory System - Block 3

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Questions: 27 | Attempts: 6,417 | Updated: Aug 21, 2023

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Development Of Respiratory System - Block 3 - Quiz

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Current Version
Aug 21, 2023

Quiz Edited by
ProProfs Editorial Team
Nov 20, 2011

Quiz Created by
Jobusch

Development Of Respiratory System - Block 3

In approximately ______ of development, respiratory diverticulum (lung bud) appears as an outgrowth from the ventral wall of the forgut.

Epithelium of the internal lining of the larynx, trachea, bronchi, and lungs is entirely of __________ origin.

The cartilagnious, muscular, and connective tissue components of the trachea and lungs are derived from _____________ surrounding the foregut.

Initially, the lung bud is in open communication with the foregut.

Trachea and esophagus are derived from the foregut via lung buds.

_________________ is a complication of tracheoesophageal fistulas (TEF); amniotic fluid does not pass down to stomach and intestine.

VACTERL association are a group of disorders that are found together. (V) vertebral anomalies (A) anal atresia (C) cardiac defects (T) tracheoesophageal fistula (E) esophageal atresia (R) renal anomalies (L) limb defects

Within the 4th week, communication between the thorax and abdomen is via _______________________.

Splanchnic mesoderm covers the outside of the lung, develops into the visceral pleura.

By the end of the 6 month approximately 17 generations of the subdivisions have formed in the lungs.

Bronchopulmonary segments are the largest subdivision of a lobe. It has its own bronchus, artery and veins. And can be separated surgically.

Branching is regulated by epithelial mesenchymal interactions between the endoderm of the lung bud and ______________ that surrounds them.

Branching has continued to form terminal bronchioles. No respiratory bronchioles or alveoli are present. No gas exchange and not compatible to life.

Each terminal bronchiole divides into two or more respiratory bronchioles, which in turn divide into 3 to 6 alveolar ducts; too thick for gas exchange

The cuboidal respiratory bronchioles change into thin, flat cells. these cells are intimately associated with numerous blood and lymph capillaries, and the surrounding spaces are now known as primitive alveoli. Respiration becomes possible.

Type II pneumocytes first appear and begin to secrete surfactant, at ________.

During the 7th month of development, sufficient numbers of capillaries are present to guarantee adequate gas exchange, and the premature infant is able to survive.

The number of terminal sacs increases steadily. Type I pneumocytes become thinner, so that surrounding capillaries protrude into the alveolar sacs. This intimate contact between epithelial and endothelial cells makes up the blood air barrier. Mature alveoli are not present before birth.

It is estimated that only 1/6 of the adult numbe of alveoli are present at birth. The remaining alveoli are formed during the first 10 years of postnatal life through the continuous formation of new primitive alveoli.

Fetal breathing movements begin at birth and cause aspiration of amniotic fluid.

Fetal breathing movements are important for stimulating _ and ____.

When respiration begins at birth, most of the fluid in the lungs is rapidly absorbed by the _ and ____.

With air entering the lungs during the first breath, _____________ is needed to prevent the avleoli from collasping.

Respiratory distress syndrome (RDS) is when a surfactant is insufficient, alveoli will collapse during expiration.

With recent development of artificial surfactant and treatment of premature babies with glucocorticoids to stimulate surfactant production have reduced the mortality associated with RDS and allowed survival of some babies as young as 5.5 months of gestation.

Dilation of terminal or larger bronchi giving the lung a honeycomb appearance on radiograph.

Development Of Respiratory System - Block 3

In approximately ______ of development, respiratory diverticulum (lung bud) appears as an outgrowth from the ventral wall of the forgut.

Epithelium of the internal lining of the larynx, trachea, bronchi, and lungs is entirely of __________ origin.

The cartilagnious, muscular, and connective tissue components of the trachea and lungs are derived from _____________ surrounding the foregut.

Initially, the lung bud is in open communication with the foregut.

Trachea and esophagus are derived from the foregut via lung buds.

_________________ is a complication of tracheoesophageal fistulas (TEF); amniotic fluid does not pass down to stomach and intestine.

VACTERL association are a group of disorders that are found together. (V) vertebral anomalies (A) anal atresia (C) cardiac defects (T) tracheoesophageal fistula (E) esophageal atresia (R) renal anomalies (L) limb defects

Within the 4th week, communication between the thorax and abdomen is via _______________________.

Splanchnic mesoderm covers the outside of the lung, develops into the visceral pleura.

By the end of the 6 month approximately 17 generations of the subdivisions have formed in the lungs.

Bronchopulmonary segments are the largest subdivision of a lobe. It has its own bronchus, artery and veins. And can be separated surgically.

Branching is regulated by epithelial mesenchymal interactions between the endoderm of the lung bud and ______________ that surrounds them.

Branching has continued to form terminal bronchioles. No respiratory bronchioles or alveoli are present. No gas exchange and not compatible to life.

Each terminal bronchiole divides into two or more respiratory bronchioles, which in turn divide into 3 to 6 alveolar ducts; too thick for gas exchange

The cuboidal respiratory bronchioles change into thin, flat cells. these cells are intimately associated with numerous blood and lymph capillaries, and the surrounding spaces are now known as primitive alveoli. Respiration becomes possible.

Type II pneumocytes first appear and begin to secrete surfactant, at ________.

During the 7th month of development, sufficient numbers of capillaries are present to guarantee adequate gas exchange, and the premature infant is able to survive.

The number of terminal sacs increases steadily. Type I pneumocytes become thinner, so that surrounding capillaries protrude into the alveolar sacs. This intimate contact between epithelial and endothelial cells makes up the blood air barrier. Mature alveoli are not present before birth.

It is estimated that only 1/6 of the adult numbe of alveoli are present at birth. The remaining alveoli are formed during the first 10 years of postnatal life through the continuous formation of new primitive alveoli.

Fetal breathing movements begin at birth and cause aspiration of amniotic fluid.

Fetal breathing movements are important for stimulating _____________ and ________________.

When respiration begins at birth, most of the fluid in the lungs is rapidly absorbed by the _________ and ____________.

With air entering the lungs during the first breath, _____________ is needed to prevent the avleoli from collasping.

Respiratory distress syndrome (RDS) is when a surfactant is insufficient, alveoli will collapse during expiration.

With recent development of artificial surfactant and treatment of premature babies with glucocorticoids to stimulate surfactant production have reduced the mortality associated with RDS and allowed survival of some babies as young as 5.5 months of gestation.

Dilation of terminal or larger bronchi giving the lung a honeycomb appearance on radiograph.

Fetal breathing movements are important for stimulating _ and ____.

When respiration begins at birth, most of the fluid in the lungs is rapidly absorbed by the _ and ____.