ICM 2: Pulm Flashcards
Cephalic folding translocates what two structures?
- Septum transversum
2. Cariogenic area
Caudal folding translocates what two structures?
- Cloacal membrane
2. Connecting stalk more anteriorly and cranially
What embryonic layer is the thoracic parietal pleura derived from?
Somatopleuric mesoderm
What embryonic layer is the thoracic visceral pleura derived from?
Splanchnopleuric mesoderm
What four things make up the diaphragm?
- Septum transversum
- Mesentery of esophagus
- Body wall
- Pleuroperitoneal membranes
What seals pericardioperitoneal canals?
Pleuroperitoneal membranes
The left canal is the last to close
Esophageal atresia leads to polyhydraminos… which is what?
Not allowing an embryo to swallow amniotic fluid and return it to the mother by the placental circulation
What stage of lung development are respiratory bronchioles first present?
Canalicular
Communication of the developing lungs with the foregut is via what?
Laryngeal opening
eventually becomes vocal folds, muscles, etc
Partitioning of pleural and pericardial cavities occurs by what membranes? These membranes are derived from what embryonic layer?
Two pleuropericardial folds (membranes) from somatopleuric mesoderm
What does each pleuropericardial fold contain?
3 layers:
- Serous mediastinal pleura
- Middle fibrous pericardium
- Inner layer of serous parietal pericardium
Three common causes of pulmonary edema?
- Heart failure
- Acute Respiratory Distress Syndrome (ARDS)
- Extensive pneumonia
Four types of primary cancers that like to metastasize to the lungs?
- Head and neck cancers
- Renal cell carcinoma
- Colon cancer
- Primary bone tumors
Which types of lung cancers are more likely to occur in the lung periphery?
adenocarcinoma, large cell
Which types of lung cancers are more likely to occur in the center of the lung?
small cell, squamous cell carcinoma
