Respiratory System - Wet Room St. 1 and 2 Flashcards
What does the upper respiratory tract consist of?
- Nasal cavity
- Pharynx
- Larynx
What is the larynx?
- Set of cartilages, membranes and ligaments
- Produce sound from exhaled air causing them to vibrate
What nerve innervates the larynx?
- Vagus
- Hyoid bone
- Epiglottis
- Vestibular ligament
- Vocal ligament
- Thyroid cartilage
- Cricoid cartilage
- Trachea
Which cartilage in the larynx forms the adams apple?
Thyroid cartilage
Which structure in the larynx prevents solids and liquids from entering the lungs?
Epiglottis
What does the lower respiratory tract consist of?
- Trachea
- Main bronchi
- Secondary bronchi
- Lungs
- Pleurae
Where is the LRT almost entirely located?
Thorax
Where does the LRT get nervous innervation?
- Sympathetic fibres in the upper thorax
- Pulmonary plexuses located at the termination of the main bronchi
- Parasympathetic fibres from the vagus
Arterial supply of the LRT?
- Bronchial arteries arising from the thoracic aorta
- Intercostal arteries
What drains the blood from the LRT?
- Bronchial veins
- Azygous venous system
What vertebral level does the trachea start?
C6
When does the trachea end?
When it bifurcates at T4
How many cartilaginous rings comprise the trachea?
15-20
What is the muscle completing the tracheal rings posteriorly?
Trachealis