The larynx originates and terminates between_______________?
Show answer Hide answer
Answer: D. C3 C6
Explanation
The larynx is a specialized tubular organ located in the anterior neck region. It extends vertically from the level of the third cervical vertebra. It terminates inferiorly at the level of the sixth cervical vertebra. The laryngeal skeleton consists of cartilages connected by membranes and ligaments. It protects the lower airway and houses the vocal cords responsible for phonation. Important cartilages include the thyroid, cricoid, and paired arytenoids.
Knowledge of vertebral levels helps clinicians locate the larynx during emergency procedures. Endotracheal intubation requires passing a tube through this anatomical region safely. Surgical neck approaches must account for the vertical extent of laryngeal structures. The cervical levels C2 to C7 span too broad a region for the larynx alone. Extending from C1 to C4 places the larynx too high in the upper neck region. Extending from C5 to C6 covers only the inferior portion of the laryngeal structure.
Related questions
Q1. Lymph from dental structures drains into all listed lymph node groups EXCEPT______________?
Show answer Hide answer
Answer: C. Retro pharyngeal nodes
Dental structures drain their lymphatic fluid into submandibular, submental, and deep cervical nodes. The lymphatic drainage pathways of the oral cavity typically completely bypass the retropharyngeal nodes. Retropharyng...
Q2. The primary sensory nerve supply to the palatine tonsils is derived from_______________?
Show answer Hide answer
Answer: C. Glossopharyngeal nerve
General sensory innervation to the palatine tonsils is provided mainly by the glossopharyngeal nerve. Branches from this cranial nerve form a plexus around the tonsillar fossa. This rich sensory supply explains why tonsi...
Q3. The mandibular fossa constitutes a portion of_____________?
Show answer Hide answer
Answer: D. Temporal bone
The mandibular fossa forms part of the temporal bone to create the temporomandibular joint. Articulating directly with the mandibular condyle enables normal functional movements of human jaw joints. Anatomical positionin...
Q4. The maxillary nerve supplies sensation to all of the following structures except______________?
Show answer Hide answer
Answer: D. Temporomandibular joint
The sensory innervation to the temporomandibular joint is supplied primarily by the mandibular nerve. The maxillary nerve provides sensory innervation to midface structures but completely misses the temporomandibular joi...
Q5. At its point of division from the common carotid, the internal carotid artery is characterized by________________?
Show answer Hide answer
Answer: A. Lateral to the external carotid
At the common carotid bifurcation, the internal carotid artery typically lies lateral to the external carotid. It also tends to be positioned slightly posterior to the external carotid artery. This spatial orientation he...
Q6. The majority of oral anatomical structures trace their embryological development from___________________?
Show answer Hide answer
Answer: A. Ectoderm
Most oral cavity structures originate embryologically from the surface ectoderm layer during early development. Dental enamel and surface oral epithelia develop directly from ectodermal tissue layers surrounding the stom...