Respiratory System

Question 1

Nasal Septum

Answer 1

• the perpendicular partition separating the nasal cavity into left and right halves, it is comprised of bony, cartilaginous and membranous parts
• cranial cartilaginous part expands laterally, forming the nasal cartilages of each nostril

Question 2

Larynx

Answer 2

-the musculocartilaginous tube connecting the laryngopharynx with the trachea and containing the vocal cords

Question 3

Epiglottis

Answer 3

-closes the laryngeal opening during swallowing, protecting the lungs from foreign bodies

Question 4

Trachea (windpipe)

Answer 4

• Extends from the larynx down the neck into the thorax to the lungs, consisting of cartilaginous rings
• terminates by bifurcating into the right and left primary bronchi above the base of the heart
• cervical part runs from the larynx to he thoracic inlet
• thoracic part continues to the bifurcation

Question 5

Apex of the Lungs

Answer 5

-the cranial end of the lungs lying in the thoracic inlet

Question 6

Base of the Lungs

Answer 6

-the caudal end of the lungs resting in the diaphragm

Question 7

Cardiac Notch

Answer 7

• the opening between lobes of the lungs where the heart sac come in contact with the thoracic wall
• cardiac impression is formed by the heart on the lungs medial surface between the 3rd and 6th rib

Question 8

Tracheal Bifurcation

Answer 8

-the splitting of the trachea into right and left primary bronchi above the base of the heart, just to the right of the midline

Question 9

Principle (Primary) Bronchi

Answer 9

-the short, thick segment entering each lungs hilus to divide into lobar bronchi

Question 10

Arytenoid Cartilage

Answer 10

-help move the vocal folds allowing tension, relaxation, or approximation of these because the vocal folds, being attached to the arytenoids, move along with them.