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30 paź 2023 · The maxillary nerve (CN V/II) supplies the anterior and superior nasopharynx, while the tonsillar nerves carry fibers from both the glossopharyngeal nerve (CN IX) and the vagus nerve (CN X). The motor branches come from the pharyngeal plexus and carry fibers from the vagus nerve (CN X).
- Cartilages of the Larynx
The larynx is the most superior part of the respiratory...
- Cartilages of the Larynx
1 maj 2023 · Specifically, the motor innervation of the STP muscle is mostly from the glossopharyngeal nerve, while the vagus nerve supplies the innervation to the other pharyngeal muscles. The pharyngeal muscles have a high nerve-muscle fiber ratio of 1:2 to 1:6 which allows for precisely coordinated pharyngeal functions. [2]
30 paź 2023 · The functions of the pharynx are accomplished by two sets of muscles which help push the food bolus further down the digestive tract. In addition, they also help with swallowing and speaking. In this page, we will learn more about the anatomy of the pharynx and its functions, including its main regions and muscles.
24 lip 2023 · The muscles of the pharynx receive motor (efferent) supply from the ninth and tenth cranial nerves. The stylopharyngeus muscle is the only muscle supplied by the glossopharyngeal nerve. The vagus nerve supplies all other muscles, which will be listed later.
Pharyngeal muscles are richly innervated, with a nerve–muscle fiber innervation ratio of 1:2 to 1:6, as compared to 1:2000 for human gastrocnemius muscle and 1:9 for extraocular eye muscles, which is important for the “fine” control required for its function.
The muscles of the pharynx play an integral role in many vital processes such as breathing, swallowing, prevention of aspiration, and speaking. Coordination of the pharyngeal musculature with the laryngeal and tongue muscles is essential to the efficiency of these essential human functions.
25 maj 2024 · The pharyngeal muscles receive dual innervation from the glossopharyngeal (ninth cranial nerve or cranial nerve IX) and vagus (10th cranial nerve or cranial nerve X) nerves, facilitating synchronous food propulsion from the oral cavity to the esophagus.
