Podcast
Questions and Answers
What is the first sign of development of the respiratory system?
What is the first sign of development of the respiratory system?
- Formation of the larynx
- Formation of the pharyngeal arches
- Formation of the nasal placodes
- Formation of the lower respiratory diverticulum (correct)
Which structures are included in the upper respiratory system?
Which structures are included in the upper respiratory system?
- Nasopharynx, oropharynx, bronchi
- Nose, larynx, trachea
- Larynx, trachea, bronchi
- Nose, nasopharynx, oropharynx (correct)
When do the nasal placodes deepen considerably to form the nasal sacs?
When do the nasal placodes deepen considerably to form the nasal sacs?
- Week 6
- Week 2
- Week 4 (correct)
- Week 8
Where does the first sign of respiratory system development occur?
Where does the first sign of respiratory system development occur?
Which structures are included in the lower respiratory system?
Which structures are included in the lower respiratory system?
In which week does the formation of the lower respiratory diverticulum occur?
In which week does the formation of the lower respiratory diverticulum occur?
What structures form the superior, middle, and inferior conchae in the nasal cavities?
What structures form the superior, middle, and inferior conchae in the nasal cavities?
What forms the thickened patch known as the olfactory epithelium in the roof of each nasal cavity?
What forms the thickened patch known as the olfactory epithelium in the roof of each nasal cavity?
What contributes to the skeletal elements and connective tissue of the head and neck region?
What contributes to the skeletal elements and connective tissue of the head and neck region?
Which nerve supplies sensory branches to the overlying ectoderm, and endoderm of each pharyngeal arch?
Which nerve supplies sensory branches to the overlying ectoderm, and endoderm of each pharyngeal arch?
What is the first sign of development in the lower respiratory system during week 4?
What is the first sign of development in the lower respiratory system during week 4?
Which structure separates the nasal sacs from the oral cavity before rupturing to create continuity with the oral cavity?
Which structure separates the nasal sacs from the oral cavity before rupturing to create continuity with the oral cavity?
What forms a cartilaginous skeletal element in each pharyngeal arch?
What forms a cartilaginous skeletal element in each pharyngeal arch?
During which week does the formation of the lower respiratory diverticulum occur?
During which week does the formation of the lower respiratory diverticulum occur?
What is the initial structure formed by the first sign of development in the lower respiratory system?
What is the initial structure formed by the first sign of development in the lower respiratory system?
What structures are included in the upper respiratory system?
What structures are included in the upper respiratory system?
What is the initial development that occurs in the nasal cavities?
What is the initial development that occurs in the nasal cavities?
Which of the following structures separates the nasal sacs from the oral cavity before rupturing to create continuity with the oral cavity?
Which of the following structures separates the nasal sacs from the oral cavity before rupturing to create continuity with the oral cavity?
What forms the superior, middle, and inferior conchae in the nasal cavities?
What forms the superior, middle, and inferior conchae in the nasal cavities?
What contributes to the skeletal elements and connective tissue of the head and neck region?
What contributes to the skeletal elements and connective tissue of the head and neck region?
What is the first sign of development in the lower respiratory system during week 4?
What is the first sign of development in the lower respiratory system during week 4?
What separates the nasal sacs from the oral cavity before rupturing to create continuity with the oral cavity?
What separates the nasal sacs from the oral cavity before rupturing to create continuity with the oral cavity?
What forms a cartilaginous skeletal element in each pharyngeal arch?
What forms a cartilaginous skeletal element in each pharyngeal arch?
Flashcards
First sign of respiratory system development?
First sign of respiratory system development?
Formation of the lower respiratory diverticulum.
Upper respiratory structures?
Upper respiratory structures?
Nose, nasopharynx, and oropharynx.
When do nasal placodes deepen?
When do nasal placodes deepen?
Week 4
Where does respiratory system development begin?
Where does respiratory system development begin?
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Lower respiratory system structures?
Lower respiratory system structures?
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When does lower respiratory diverticulum form?
When does lower respiratory diverticulum form?
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What forms the nasal conchae?
What forms the nasal conchae?
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Olfactory epithelium formation?
Olfactory epithelium formation?
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Skeletal/connective tissue of head/neck?
Skeletal/connective tissue of head/neck?
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Nerve supply to pharyngeal arches?
Nerve supply to pharyngeal arches?
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First sign of lower respiratory development?
First sign of lower respiratory development?
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Separates nasal/oral cavities?
Separates nasal/oral cavities?
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Cartilaginous element origin in pharyngeal arches?
Cartilaginous element origin in pharyngeal arches?
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Initial nasal cavity development?
Initial nasal cavity development?
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Study Notes
Development of Respiratory System
- The first sign of development of the respiratory system occurs in the fourth week of embryonic development.
- This development occurs in the ventral wall of the foregut, where the respiratory diverticulum forms.
Upper Respiratory System
- The upper respiratory system includes the nasal cavities, paranasal sinuses, and nasopharynx.
Lower Respiratory System
- The lower respiratory system includes the larynx, trachea, bronchi, and lungs.
- The formation of the lower respiratory diverticulum occurs during the fourth week of embryonic development.
Nasal Cavities
- The nasal placodes deepen considerably to form the nasal sacs during the fifth week of embryonic development.
- The olfactory epithelium, a thickened patch, forms in the roof of each nasal cavity.
- The superior, middle, and inferior conchae in the nasal cavities are formed by the cartilaginous skeletal elements.
Pharyngeal Arches
- The neural crest cells contribute to the skeletal elements and connective tissue of the head and neck region.
- The nerve that supplies sensory branches to the overlying ectoderm and endoderm of each pharyngeal arch is the trigeminal nerve.
- A cartilaginous skeletal element forms in each pharyngeal arch.
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