DAANCE Anatomy and Physiology 4

Question 1

Which cranial nerve provides the primary sensory innervation to the maxillary teeth?

Accepted Answer

Cranial nerve V2 (maxillary division of trigeminal)

Answer

The maxillary division (V2) of the trigeminal nerve supplies sensory innervation to the maxillary teeth, palate, and surrounding structures.

Question 2

The carotid body located at the bifurcation of the common carotid artery primarily functions as a:

Accepted Answer

Chemoreceptor for oxygen and CO2 levels

Answer

The carotid body is a peripheral chemoreceptor that detects changes in arterial oxygen, CO2, and pH levels to regulate respiration.

Question 3

Which layer of the airway wall contains cartilaginous rings that prevent collapse?

Accepted Answer

Musculocartilaginous layer

Answer

The musculocartilaginous layer of the trachea and bronchi contains cartilaginous rings or plates that maintain airway patency.

Question 4

The functional residual capacity (FRC) of the lungs is the volume of air remaining after:

Accepted Answer

Normal tidal expiration

Answer

FRC is the lung volume at the end of a normal passive expiration, representing the balance point between lung recoil and chest wall expansion.

Question 5

Which anatomical structure separates the oral cavity from the nasal cavity?

Accepted Answer

Hard and soft palate

Answer

The hard palate (bony) anteriorly and soft palate (muscular) posteriorly form the roof of the mouth and floor of the nasal cavity.

DAANCE - Dental Anesthesia Assistant National Certification Examination Practice Test