projecting medially from each wall of the nasal cavity are three scroll like structures and divided into superior, middle and inferior.

when upper respiratory tract is obstructed, this is performed to open airway.

inheritied disease in which functions of exocrine glands are disrupted throughout the body.

Porch or entranceway that is lined with skin containing sebaceous and sweat glands and numerous hair follicles.

large, shield-shaped thyroid cartilage that is formed by two cartilage plates, resembles an upright open book, with the books "spine" laying in the anterior midline of the neck. the "spine" is the ridge like ______.

a type of allergic inflammatory response that occurs in people who are hypersensitive to irritants in the air or to stress.

area richly supplied with sensory nerve endings, filters inhaled air because of mucus that traps inhaled dust, bacteria or other particles.

cartilaginous rings, fibroelastic connective tissue connecting adjacent rings, and the tracheal is lie external to the submucosa and form _________; the external layer of connective tissue is __________.

category of disorders in which flow of air into and out of lungs is difficult or obstructed. Mostly refers to chronic bronchitis or emphysema. Is a major cause of death and disability in US.

laryngopharynx, nasopharynx, and oropharynx

a sphincter that prevents the passage of air during abdominal straining. The abdominal muscles contract and the glottis closes to prevent exhalation, raising intrathoracic and intra-abdominal pressure.

Pendulous "little grape" reflects superiorly and closes off the nasopharynx and prevents food from entering nasal cavity.

These are the nine cartilages of the Larynx.