Lesson+No+107+In+class+The+trachea+and+bronchial+tree

What are the two parts of the trachea?

The trachea has cervical and thoracic parts.

Where is the tracheal bifurcation located?

At the level of the 4th or 5th thoracic vertebra.

What type of cartilage forms the trachea?

C-shaped hyaline cartilage.

What is the function of the bronchial tree?

The bronchial tree branches from the trachea to the alveoli, facilitating ventilation.

What structure connects the tracheal rings to each other?

Annular ligaments.

Which layer supports the mucous membrane of the trachea?

The lamina propria.

What epithelial type lines the trachea?

Ciliated, pseudostratified columnar epithelium.

What are the two types of airways in the bronchial tree?

Conducting airways and respiratory airways.

What is the role of alveolar ducts?

They arise from respiratory bronchioles and are composed of pulmonary alveoli.

What supplies blood to the trachea?

Cranial and caudal thyroid arteries and bronchoesophageal arteries.

What type of innervation does the trachea receive?

Parasympathetic and sympathetic innervation.

What animal has a tracheal bronchus?

The ruminant and pig have a tracheal bronchus on the right side.

Identify the anatomical feature that varies between species in relation to the trachea.

The number of tracheal rings.

What is the structure called where the trachea branches into the principal bronchi?

Tracheal bifurcation.

How does the esophagus position change in mammals?

The esophagus shifts to the left lateral position.

What muscles define the lateral boundary of the cervical space?

Muscles between the forelimb and the neck/head, such as the brachiocephalicus and omotransversarius.

What happens during tracheal collapse?

There is a weakening of the tracheal rings, leading to potential airway obstruction.

What is the significance of the adventitia in the trachea?

It is a thin connective tissue layer surrounding the trachea.

What organ is located within the cervical space besides the trachea?

Esophagus.

In which animals is endoscopy commonly used for examining the trachea?

In both small and large animals.

Where do the recurrent laryngeal nerves branch from?

The vagus nerve (CN X).

What defines the lateral boundary of the cervical space?

Muscles between the forelimb and the neck/ head

What muscles define the ventral boundaries of the cervical space?

Sternothyroideus m., sternohyoideus m., sternocephalicus m.

What muscles define the lateral boundary of the cervical space?

Brachiocephalicus m., omotransversius m., (omohyoideus m. In horse)