Lecture Notes Respiratory

Question 1

Pharynx “throat” has 3 regions

Answer 1

1) nasopharynx- includes adenoids & opening to auditory tubes
2) oropharynx-includes stratified squamous epithelium + uvula
3) laryngopharynx-stratified squamous; “the fork in the road”

Question 2

Conducting passageways from respiratory bronchioles through alveolar sacs; simple cuboidal epithelium

Answer 2

Alveolar ducts

Question 3

Alveoli

Answer 3

may be present as individual alveoli on respiratory bronchioles,
or in clumps called alveolar sacs epithelium; highly vascular (capillaries
; site of gas exchange; simple squamous ); surfactant & macrophages.

Question 4

3 types of bronchioles

Answer 4

1) Bronchioles- Lined with PCCE
2) Terminal bronchioles-Simple ciliated columnar epithelium
3) Respiratory bronchioles-Simple cuboidal. Smooth muscle dominates the bronchial wall

Question 5

Breaks the surface tension of water

Answer 5

Surfactant

Question 6

Without surfactant,

Answer 6

The surface tension collapses the alveoli

Question 7

Separates the 2 pleural cavities

Answer 7

Mediastinum

Question 8

Depression in the left lung

Answer 8

Cardiac notch

Question 9

Found in the Pons and

Medulla oblongata

Answer 9

Respiratory centers

Question 10

In addition to these subconscious reflexes, there can be

Answer 10

Voluntary motor signals