GAS1 Lab 2 Pharynx and Larynx

OBJECTIVES:

GAS1.2.4 Identify the major cartilages of the larynx, their articulations with one another, the folds of mucous membrane covering them, the vocal cords (true and false), and the ventricle.

GAS1.2.5 Identify the muscles which bring about the movement of the laryngeal cartilages. Identify the role played by each of these muscles in the control of vocal pitch and/or the control of the size of the rima glottidis.

GAS1.2.6 Identify the three pharyngeal constrictor muscles and their anterior attachments to bony/cartilaginous structures. Identify the three longitudinal muscles.

GAS2.2.7 Identify the sensory and motor nerves to the larynx and pharynx. Predict the functional consequences of damage to any one of these nerves.

READINGS:

Moore (Eighth Edition): Clinically Oriented Anatomy Pages: 1031-1040.

Pharynx and Larynx: Module 2 - Page 1 of 8

Let's get oriented with structures you already know:

	Begin with the vertebral column C-1 to T-4.
	Add the esophagus.
	Add the laryngopharynx.
	Add the oropharynx.
	Add the hyoid bone.
	Add the trachea.
	Add the cricoid cartilage.
	Add the thyroid cartilage.

	If you were performing a tracheostomy, where would be the optimal place to insert the tracheostomy tube?
Between the thryoid cartilage and the cricoid catilage because there is just connective tissue covering the airway and it is below the actual larynx.

Now let's focus on the larynx itself. We will come back to the big picture near the end of this module.