"Descendens noni" is a Latin term used to describe the nerve responsible for supplying the muscles of the voice box. The spelling of this word is broken down phonetically as follows: /dɪˈsɛndənz/ for "descendens", which means "descending", and /ˈnoʊnaɪ/ for "noni", which refers to the ninth cranial nerve. The use of IPA phonetic transcription demonstrates the clarity and consistency of the International Phonetic Alphabet in representing the sounds of various languages and scientific terms.
Descendens noni is a Latin phrase that translates to "the descendant of the ninth." In medical terminology, it specifically refers to a structure or anatomical feature that is derived from or originates from the ninth (nonus) in a series or sequence.
This term is commonly used in the context of describing the anatomical branches of certain nerves. In particular, it often refers to the ninth cranial nerve, known as the glossopharyngeal nerve. This nerve is one of the cranial nerves that originates in the brainstem and supplies motor and sensory innervation to various structures in the head and neck region.
The descendens noni of the glossopharyngeal nerve pertains to a specific branch called the tympanic branch, which travels through a bony canal known as the tympanic or Jacobson's canal. This branch supplies innervation to the middle ear and a small region of the pharynx. The descendens noni is responsible for transporting parasympathetic fibers that control certain functions such as blood flow regulation and salivary gland secretion in the region it innervates.
Overall, the term "descendens noni" is primarily used to identify and specify the derived branches or anatomical structures originating from the ninth segment or nerve in the body, particularly in the context of the glossopharyngeal nerve.
The descending ramus of the nervus hypoglossus, formerly called the nonus or ninth cranial nerve.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.