Keiser Genetics Is One of The Major Reasons for Difference in Voice Quality Reply

Response to a post

Rules : APA Format / 250 Word count

• Your post must be highly organized, thorough and accurate.
• Advance the discussion or extend discussions already taking place.
• Responses must add new information not previously discussed. Pose new possibilities or opinions not previously voiced. Consider new factual information tied with critical thinking. Interesting and current research on the topic.
• Do not simply summarize another student’s post and agree/disagree. Consider starting out posts with, “A research article I found said, Did you know, 3 things I found interesting were…”
• Critical thinking very important for this class
• Example of how the professor like critical thinking :In a response to a discussion of burns, a student included:

  ” I have seen patients at the urgent care I work at come in with sunburns that have mild blisters. It is extremely important to keep burns in a septic environment as this can cause further complications. (Saladin 2018)I remember when I was about 7 years old my uncle caught his leg on fire trying to shut off a cigarette he was smoking. His muscles and tendons were visible; my mother cleaned his wound about 3 times a day to prevent any infections along with antibiotics and stay hydrated .His third degree burn lacked pain because his nerve ending were damaged. This only occurs with third degree burns, which is why first and second degree burns are a lot more painful. It is important to be evaluated by a physician when burns are caused by chemicals or electricity, large and deep burns, or have burns that appear charred (mayo clinic).”

Post:

The larynx is a cartilaginous chamber about 4 cm long. Its primary function is to keep food and drink out of the airway, but it evolved the additional role of sound production also known as the “voice box” (Saladin,2020). In infants, the larynx is relatively high and the epiglottis touches the soft palate. This creates a more or less continuous airway from the nasal cavity to the larynx and allows infants to breathe continually while swallowing (Saladin,2020). One example of this is when i am feeding my baby niece and she is able to breathe continuously while drinking her bottle of milk, since the epiglottis deflects milk away from the air stream. By age 2, the root of the tongue becomes more muscular and forces the larynx to descend to a lower position. The larynx consists of nine cartilages: the most superior is the epilottic cartilage, the largest is the thyroid cartilage, the “Adam’s apple is an anterior peak of the thyroid cartilage. Testosterone stimulates the growth of this performance, which therefore larger in males than in females (Saladin,2020). Another cartilage is the cricoid cartilage which constitutes the “box” in the voice box. There is also the arytenoid cartilages, corniculate cartilages, and the cuneiform cartilages. Vocal cords are controlled by intrisic mucles which pull on the corniculate and arytenoid cartilages, causing the cartilages to pivot. Depending on the direction of their rotation the arytenoid cartilages abduct or adduct the vocal cords (Saladin,2020). Air forced between the adducted vocal cords vibrates them, producing a high pitched sound when the cords are relatively taut and a lower pitched sound when they are more slack. In adult males the vocal cords are usually longer and thicker as well as vibrate more slowly, and produce lower pitch sounds than females (Saladin,2020). Loudness is determined by the force of the air passing between the vocal cords, although the vocal cords alone produce sound, they don’t produce intelligible speech which the upper portion of the throat modifies the vibration of the vocal cords that is producing the sound in order to produce speech.