Main Difference – Pharynx vs Larynx. The nasopharynx is the upper part of the pharynx that stars from the skull base to the upper layer of the soft palate. The nasal pharynx is the home of the pharyngeal tonsils and the adenoids, which are on the posterior wall. It comprises space between the soft palate and internal nares and is above the oral cavity. Anatomy Of Pharynx 2. Pharynx Structure. It has different roles during breathing, deglutition, and vocalization. The main difference between pharynx and larynx is that pharynx is a part of an alimentary canal, which extends from the nasal cavity and mouth to the larynx and the esophagus whereas larynx is the upper portion of the trachea. A laryngocele is a protrusion of ciliated pseudostratified columnar epithelium and loose areolar connective tissue arising from saccular dilation of the appendix of the laryngeal ventricle. Posteriorly-Prevertebral fascia separating it from cervical spined. Inferiorly-pharynx continues with oesophagus at the level of 6th cervical vertebra/ lower border of cricoid cartilage.c. Both air and food pass through the pharynx. Learn more about respiratory system anatomy with this interactive respiratory system quiz guide. 2. These areas also form part of the digestive tract. The other two regions of the pharynx, the oropharynx and laryngopharynx, are lined by nonkeratinizing stratified squamous epithelium. A lateral pharyngeal diverticulum is a protrusion of nonkeratinizing squamous mucosa originating in the pharynx. Figure 23.3.6 – Pharynx: The pharynx runs from the nostrils to the esophagus and the larynx. Laryngoceles . It is common to both the alimentary and the respiratory tract. The structure of pharynx is divided into three components – Nasopharynx, Oropharynx, and Laryngopharynx. The oral section is called the oropharynx or oral pharynx. The Pharynx. Nasopharynx. The oral pharynx is lined by a stratified squamous non-keratinizing type of epithelium and lacks both muscularis mucosae and submucosa.The epithelium rests on a lamina propria that contains a thick layer of longitudinally oriented elastic fibers (a useful diagnostic feature). The pharynx is a conductive structure located in the midline of the neck. It is the part that comes after the nasal pharynx, behind the tongue base, between the epiglottis and the soft palate. The pharynx is a musculomembranous tubular structure not supported by bone or cartilaginous matrix. The pharynx is a muscular tube that connects the nasal cavities to the larynx and oesophagus. Both the oral and nasal cavities funnel back into the pharynx, or the throat. Slide 152 40x (H&E) View Virtual Slide Slide 152 triC (aldehyde fuchsin) View Virtual Slide. Boundaries –a. 1. The pharynx is composed of the nasopharynx, oropharynx, and laryngopharynx. It is comprised of three parts; the nasopharynx, oropharynx and laryngopharynx (from superior to inferior). The mucosa includes a stratified squamous epithelium that is endowed with mucus-producing glands. Histologically, the wall of the oropharynx is similar to that of the oral cavity. The pharynx serves as a hallway from those cavities down to the esophagus and larynx. It is the main structure, in addition to the oral cavity, shared by two organ systems, i.e., the gastrointestinal tract (GIT) and the respiratory system. Pharynx and larynx are two structures found in the neck region of vertebrates. Superiorly-Base of skull including posterior part of body of sphenoid and the basilar part of the occipital bone.b. Anatomy of pharynx 1. The tube begins at the base of the skull and ends inferior to the cricoid cartilage (C6).