I believe the answer is: scientific stage
In the scientific stage of societal develoment, people start to rely more on empirical evidence to drive their decision rather than religion or any forms of diety. In this stage of development, innovations would start to flourish and society tend to keep inventing things that increase their prosperity.
The V-shaped notch in the midline of the neck that keeps the tract open is called the laryngeal prominence.
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What is the anatomy of the respiratory tract in the Larynx?</h3>
The larynx is a sophisticated hollow structure positioned near the neck's anterior midline. The larynx transports air to the lower respiratory tract and seals the airway, primarily during swallowing, to avoid food aspiration.
The larynx is made up of nine separate cartilages, including three big unpaired cartilages which are:
- Cricoid,
- Thyroid, and
- Epiglottis.
and three paired smaller cartilages called:
- Arytenoid,
- Corniculate, and
- Cuneiform.
The cartilage's broad flat right and left halves combine apically in the midline to produce a V-shaped anterior projection known as the laryngeal prominence.
Learn more about the anatomy of the Larynx here:
brainly.com/question/1199917
What unit is this? like what all are they talking about more information please