AP BIOLOGY

Detailed explanation-1: -The vocal cords are composed of mucous membrane infoldings that stretch horizontally across the middle laryngeal cavity. They are attached anteriorly at the angle on the interior surface of the thyroid cartilage and project posteriorly to the arytenoid cartilages on either side.

Detailed explanation-2: -Two vocal cords are stretched across the voice box or larynx in such a way that it leaves a narrow slit between them for the passage of air. When air passes through them, the vocal cords vibrate to produce the human voice.

Detailed explanation-3: -The Stretching Muscle (The CT muscle) The CT muscle connects the two main cartilages that hold the vocal folds. When the CT Stretching Muscle contracts, the cartilages can rock and glide on top of each other resulting in the vocal folds lengthening, thinning, and stretching.

Detailed explanation-4: -The glottis is the opening between the vocal folds in the larynx that is generally thought of as the primary valve between the lungs and the mouth; the states of the glottis are the positions generally considered to characterize the different possible shapes of this opening.

Detailed explanation-5: -The glottis is the portion of the laryngeal cavity formed by the four vocal folds and the opening between the folds. The laryngeal ventricles or Morgagni sinus are a fusiform fossa situated between the superior (true vocal folds) and the inferior vocal cords (vestibular folds).