meatus definition anatomy

Vestibular system Cranial nerves Bones protect the various other organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, and enable mobility.Bones come in a variety of shapes and sizes and have a complex internal and external structure. Vulva includes the lower part of the larynx, the trachea, bronchi, bronchioles and the alveoli. Anatomy The mastoid process is a smooth conical projection of bone located at the base of the mastoid area of the temporal bone. Urethra Human nose Gross anatomy. Mucous membrane External definition, of or relating to the outside or outer part; outer: an external surface. The structure of the external auditory canal is the same in all mammals. The vulval vestibule is a part of the vulva between the labia minora into which the urinary meatus (urethral It allows the attachment of muscles such as the occipitofrontalis muscle, as well as certain muscles of the neck like the sternocleidmastoid and splenius capitis muscles.. Mastoid process . The frontal sinuses are one of the four pairs of paranasal sinuses that are situated behind the brow ridges. Vulva Cetacea 6] the temporal bone consists of three principal parts: Sinuses are mucosa-lined airspaces within the bones of the face and skull.Each opens into the anterior part of the corresponding middle nasal meatus of the nose through the frontonasal duct which traverses the anterior part of the labyrinth of the ethmoid. Mucous membrane In anatomy, the orbit is the cavity or socket of the skull in which the eye and its appendages are situated. See more. 3. Cranial nerves The temporal bone is ossified from eight centers, exclusive of those for the internal ear and the tympanic ossicles: one for the squama including the zygomatic process, one for the tympanic part, four for the petrous and mastoid parts, and two for the styloid process.Just before the end of prenatal development [Fig. The renal corpuscle is composed of two structures, the glomerulus and the Bowman's capsule. The cranial nerves emerge from the central It is composed of central and peripheral portions. Definition. The inferior nasal concha is the longest and broadest of the three conchae.Unlike the superior and middle, the inferior nasal concha is formed by an independent bone (of the same name). Sinuses are mucosa-lined airspaces within the bones of the face and skull.Each opens into the anterior part of the corresponding middle nasal meatus of the nose through the frontonasal duct which traverses the anterior part of the labyrinth of the ethmoid. External acoustic meatus Medically reviewed by the Healthline Medical Network The ear canal, also called the external acoustic meatus, is a passage comprised of bone and skin leading to the eardrum. Ear canal Adventitia Definition. Definition Parapharyngeal It plays an important role in the human ear canal, assisting in cleaning and lubrication, and also provides some protection from bacteria, fungi, and insects.Excess or impacted cerumen can press against the eardrum and/or occlude the external auditory canal and impair hearing, causing conductive In addition it contains the cell bodies for fibers that gather sensory information from the nasal cavity, part of the soft palate, and the sinus cavities, the auricle and the external auditory meatus . Contents. The peripheral portion of the vestibular system consists of the vestibular labyrinth, vestibular Cetacea (/ s t e /; from Latin cetus 'whale', from Ancient Greek () 'huge fish, sea monster') is an infraorder of aquatic mammals that includes whales, dolphins, and porpoises.Key characteristics are their fully aquatic lifestyle, streamlined body shape, often large size and exclusively carnivorous diet. The main structures of the vulva are: the mons pubis, the labia majora and labia minora, the external parts of the clitoris the clitoral hood and the glans, the urinary meatus, the vaginal opening and hymen, and Bartholin's and Skene's vestibular glands. Cranial nerves Renal corpuscle external auditory canal It consists of one or more layers of epithelial cells overlying a layer of loose connective tissue.It is mostly of endodermal origin and is continuous with the skin at body openings such as the eyes, eyelids, ears, inside the nose, inside the mouth, A mucous membrane or mucosa is a membrane that lines various cavities in the body of an organism and covers the surface of internal organs. The urethra (from Greek ourthr) is a tube that connects the urinary bladder to the urinary meatus for the removal of urine from the body of both females and males. Urethra In addition it contains the cell bodies for fibers that gather sensory information from the nasal cavity, part of the soft palate, and the sinus cavities, the auricle and the external auditory meatus . Pelvic Fractures - Physiopedia External Definition Vestibule The glomerulus is a small tuft of capillaries containing two cell types. Vestibule It plays an important role in the human ear canal, assisting in cleaning and lubrication, and also provides some protection from bacteria, fungi, and insects.Excess or impacted cerumen can press against the eardrum and/or occlude the external auditory canal and impair hearing, causing conductive 3. Each maxillary sinus is drained by one or more openings (maxillary ostia) into the middle nasal meatus.Similar to the frontal sinuses, the maxillary sinuses are also drained at the semilunar hiatus.. The facial nerve exits the cranial cavity through the internal 2.) Ear canal A bone is a rigid organ that constitutes part of the skeleton in most vertebrate animals. Bone Spiral ganglion The spiral ganglion is the sensory ganglion of the cochlear branch of the vestibulocochlear nerve (CN VIII). Respiratory system Other features include the pudendal cleft, pubic hair, sebaceous glands, the vulval vestibule, and the urogenital triangle. Contents. They are situated deep in the bodies of the maxillae. See more. In addition it contains the cell bodies for fibers that gather sensory information from the nasal cavity, part of the soft palate, and the sinus cavities, the auricle and the external auditory meatus . Vestibule or Vestibulum can have the following meanings, each primarily based upon a common origin, from early 17th century French, derived from Latin vestibulum, -i n. "entrance court".. Anatomy. The helicis major is a narrow vertical band situated upon the anterior margin of the helix.It arises below, from the spina helicis, and is inserted into the anterior border of the helix, just where it is about to curve backward. The mastoid process In appearance it is a slightly curved tube that extends inward from the floor of the auricle, or The human nose is the most protruding part of the face.It bears the nostrils and is the first organ of the respiratory system.It is also the principal organ in the olfactory system.The shape of the nose is determined by the nasal bones and the nasal cartilages, including the nasal septum which separates the nostrils and divides the nasal cavity into two. Also learn about conditions, tests, and treatments affecting the sinuses. WebMD's Sinuses Anatomy Page provides a detailed image and definition of the sinuses including their function and location. In males, the urethra allows for the expulsion of both urine and semen. 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