nostril

(noun)

Either of the two orifices located on the nose (or on the beak of a bird); used as a passage for air and other gases to travel the nasal passages.

Related Terms

Examples of nostril in the following topics:

  • Deviated Nasal Septum

    • The nasal septum is the bone and cartilage in the nose that separates the nasal cavity into the two nostrils.
    • The surgeon inserts the surgical instrument through the nostrils and cuts away the obtruding matter.

  • Nose and Paranasal Sinuses

    • The external part of the human nose is the protruding part of the face that bears the nostrils.
    • The nasal septum is wall of cartilage that separates the right and left nostril chambers from each other.

  • Vitiligo

    • Depigmentation is particularly noticeable around body orifices, such as the mouth, eyes, nostrils, genitalia, and umbilicus.

  • Facial Muscles

    • Actions:  The transverse section closes the nostrils and the alar part opens them.
    • The levator labii superioris alaeque nasi is the muscle of the upper lip and acts to lift the upper lift and dilates nostril, producing a snarling expression.

  • Laryngitis and Cancer of the Larynx

    • For this reason, many specialist clinics now use fiber-optic nasal endoscopy where a thin and flexible endoscope, inserted through the nostril, is used to clearly visualize the entire pharynx and larynx.

  • Bell's Palsy

    • The facial nerves control a number of functions such as blinking and closing the eyes, smiling, frowning, lacrimation, salivation, flaring nostrils, and raising eyebrows.

  • Skin and Mucosae (Surface Barriers)

    • They are at several places attached to skin: at the nostrils, the mouth, the lips, the eyelids, the genital area, but are also located within the body cavities, such as in the stomach, anus, trachea, and ears.