Question

question 9
the respiratory portion of the nasal passage is lined with a mucous membrane made up of______ epithelium.
stratified columnar
pseudostratified columnar
simple squamous
simple columnar
question 10
which of the following is true of the cribriform plate?
it separates the nasal and cranial cavities.
it forms the lateral aspects of the nose.
it separates the internal nose from the mouth.
it forms a midline separation in the nasal cavity.
question 11
the approximate length of the trachea, or windpipe, is______ cm.
5
11
17
24

Explanation:

• Question 9: The respiratory portion of the nasal passage has a mucous membrane made of pseudostratified columnar epithelium. This type of epithelium has cilia that help move mucus (which traps dust, pathogens etc.) out of the respiratory tract. Stratified columnar epithelium is less common in the respiratory system's main air - conducting regions. Simple squamous epithelium is more for diffusion (e.g., in alveoli), and simple columnar epithelium is not the typical type in the nasal respiratory mucosa.
• Question 10: The cribriform plate is a part of the ethmoid bone. It has small foramina through which olfactory nerves pass, and it separates the nasal cavity (below) from the cranial cavity (above). The lateral aspects of the nose are formed by other bones like the nasal bones and maxilla. The separation between the internal nose and mouth is mainly by the palate. The mid - line separation (nasal septum) is formed by the vomer, perpendicular plate of the ethmoid, etc., not the cribriform plate.
• Question 11: The trachea (windpipe) is approximately 10 - 12 cm long in adults. Among the given options, 11 cm is the closest. A 5 cm trachea would be too short, 17 cm and 24 cm are longer than the normal average length.

Answer:

• Question 9: pseudostratified columnar
• Question 10: It separates the nasal and cranial cavities
• Question 11: 11