meatus definition anatomy

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. Definition. Near the middle of the squamous part of occipital bone is the external occipital protuberance, the highest point of which is referred to as the inion.The inion is the most prominent projection of the protuberance which is located at the posterioinferior (rear lower) part of the human skull.The nuchal ligament and trapezius muscle attach to it.. 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. The structure of the external auditory canal is the same in all mammals. In appearance it is a slightly curved tube that extends inward from the floor of the auricle, or In humans and other mammals, the anatomy of a typical respiratory system is the respiratory tract.The tract is divided into an upper and a lower respiratory tract.The upper tract includes the nose, nasal cavities, sinuses, pharynx and the part of the larynx above the vocal folds.The lower tract (Fig. Also learn about conditions, tests, and treatments affecting the sinuses. Endothelial cells, which have large fenestrae, are not covered by diaphragms. A penis (plural penises or penes (/-n i z /)) is the primary sexual organ that male animals use to inseminate females (or hermaphrodites) during copulation. 3. The renal corpuscle is composed of two structures, the glomerulus and the Bowman's capsule. Earwax, also known as cerumen, is a yellowish, waxy substance secreted in the ear canals. fat (main component) vessels internal maxillary artery, depending on its course ascending pharyngeal artery, depending on its course; pterygoid venous plexus, in its portion In appearance it is a slightly curved tube that extends inward from the floor of the auricle, or They are lightweight yet strong and 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 . 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 They are situated deep in the bodies of the maxillae. Definition/description [edit | edit source] A pelvic fracture is a disruption of the bony structures of the Pelvis. Human sexuality is the way people experience and express themselves sexually. A penis (plural penises or penes (/-n i z /)) is the primary sexual organ that male animals use to inseminate females (or hermaphrodites) during copulation. Mastoid Process Location. Such organs occur in many animals, both vertebrate and invertebrate, but males do not bear a penis in every animal species, and in those species in which the male does bear a so-called penis, the penises in the various species In the adult human, the volume of the orbit is 30 millilitres (1.06 imp fl oz; 1.01 US fl oz), of which the eye occupies 6.5 ml (0.23 imp fl oz; 0.22 US fl oz). external auditory canal, also called external auditory meatus, or external acoustic meatus, passageway that leads from the outside of the head to the tympanic membrane, or eardrum membrane, of each ear. includes the lower part of the larynx, the trachea, bronchi, bronchioles and the alveoli. In humans and other mammals, the anatomy of a typical respiratory system is the respiratory tract.The tract is divided into an upper and a lower respiratory tract.The upper tract includes the nose, nasal cavities, sinuses, pharynx and the part of the larynx above the vocal folds.The lower tract (Fig. 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 cranial nerves emerge from the central The intrinsic muscles of the external ear are: . Urethra length differs in human females and males. ; The helicis minor is an oblique fasciculus, covering the crus helicis. Like the eyelid, the foreskin is free to move after it separates from the glans, which usually occurs before or during puberty. An anatomic ring is formed by the fused bones of the ilium, ischium and pubis attached to the sacrum. 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. Spiral ganglion The spiral ganglion is the sensory ganglion of the cochlear branch of the vestibulocochlear nerve (CN VIII). Definition. Also learn about conditions, tests, and treatments affecting the sinuses. 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. Mastoid Process Location. 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. includes the lower part of the larynx, the trachea, bronchi, bronchioles and the alveoli. 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, The urethra is a hollow tube positioned between the urinary bladder and urinary meatus which takes urine stored in the bladder out of the body. Internal and external urethral sphincter muscles control micturition. The biological and physical aspects of sexuality largely concern the human 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. In anatomy, a meatus (/ m i e t s /, mee-AY-ts), plural "meatus" or "meatuses", is a natural body opening or canal.. Meatus may refer to: . 2.) The definition of mechanically separated meat (MSM) should be a generic one covering all methods of mechanical separation. Vestibular system anatomy The vestibular system is a somatosensory portion of the nervous system that provides us with the awareness of the spatial position of our head and body (proprioception) and self-motion (kinesthesia).). In general, vestibule is a small space or cavity at the beginning of a canal. In general, vestibule is a small space or cavity at the beginning of a canal. includes the lower part of the larynx, the trachea, bronchi, bronchioles and the alveoli. Vestibular system anatomy The vestibular system is a somatosensory portion of the nervous system that provides us with the awareness of the spatial position of our head and body (proprioception) and self-motion (kinesthesia).). WebMD's Sinuses Anatomy Page provides a detailed image and definition of the sinuses including their function and location. WebMD's Sinuses Anatomy Page provides a detailed image and definition of the sinuses including their function and location. Contents. Earwax, also known as cerumen, is a yellowish, waxy substance secreted in the ear canals. 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 stylomastoid foramen is a small, round opening located on the inferolateral aspect of the temporal bone, between the root of the styloid process and the mastoid process.It serves as the external opening of the facial canal of the temporal bone, which transmits the facial nerve and the stylomastoid artery.. Rapid technological developments in this area mean that a flexible definition is appropriate. The peripheral portion of the vestibular system consists of the vestibular labyrinth, vestibular External definition, of or relating to the outside or outer part; outer: an external surface. The glans penis, commonly referred to as the glans, is a bulbous structure at the distal end of the human penis that is the most sensitive erogenous zone and primary anatomical source of male sexual pleasure. 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 parapharyngeal space is shaped like an inverted pyramid, with its base at the skull base, with its apex inferiorly pointing towards the greater cornu of the hyoid bone 2.. See more. The adventitia (advnt) is the outer layer of fibrous connective tissue surrounding an organ.. The glans penis, commonly referred to as the glans, is a bulbous structure at the distal end of the human penis that is the most sensitive erogenous zone and primary anatomical source of male sexual pleasure. "Orbit" can refer to the bony socket, or it can also be used to imply the contents. The nose is one of the primary sensory organs responsible for the sense of smell, while it also plays major roles in respiration and speech production [1].The nasal cavity lies just behind the two nostrils and forms the interiors of the nose.. Endothelial cells, which have large fenestrae, are not covered by diaphragms. The frontal sinuses are one of the four pairs of paranasal sinuses that are situated behind the brow ridges. It is composed of central and peripheral portions. 2.) The maxillary sinuses are the largest and the most inferior of the paranasal sinuses. The inner surface of the concha is covered by a mucous membrane that contains large vascular spaces that can change in size in order to control the width of the nasal cavity. The mastoid process The glomerulus is a small tuft of capillaries containing two cell types. The urethra is a hollow tube positioned between the urinary bladder and urinary meatus which takes urine stored in the bladder out of the body. In anatomy, a meatus (/ m i e t s /, mee-AY-ts), plural "meatus" or "meatuses", is a natural body opening or canal.. Meatus may refer to: . 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. ; The helicis minor is an oblique fasciculus, covering the crus helicis. In males, the urethra allows for the expulsion of both urine and semen. The outer layer of connective tissue that surrounds an artery, or vein the tunica externa, is also called the tunica adventitia.. To some degree, its role is complementary to that of the serosa, which also provides a layer of tissue surrounding an organ. Human sexuality is the way people experience and express themselves sexually. Rapid technological developments in this area mean that a flexible definition is appropriate. Vestibular system anatomy The vestibular system is a somatosensory portion of the nervous system that provides us with the awareness of the spatial position of our head and body (proprioception) and self-motion (kinesthesia).). It makes up the upper respiratory system along with the paranasal sinuses, oral cavity, pharynx, and larynx [2], In anatomy, the orbit is the cavity or socket of the skull in which the eye and its appendages are situated. They are situated deep in the bodies of the maxillae. external auditory canal, also called external auditory meatus, or external acoustic meatus, passageway that leads from the outside of the head to the tympanic membrane, or eardrum membrane, of each ear. 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. 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. Contents. The frontal sinuses are one of the four pairs of paranasal sinuses that are situated behind the brow ridges. An anatomic ring is formed by the fused bones of the ilium, ischium and pubis attached to the sacrum. 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). 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. A bone is a rigid organ that constitutes part of the skeleton in most vertebrate animals. fat (main component) vessels internal maxillary artery, depending on its course ascending pharyngeal artery, depending on its course; pterygoid venous plexus, in its portion The frontal sinuses are one of the four pairs of paranasal sinuses that are situated behind the brow ridges. The intrinsic muscles of the external ear are: . The cranial nerves emerge from the central The parapharyngeal space is shaped like an inverted pyramid, with its base at the skull base, with its apex inferiorly pointing towards the greater cornu of the hyoid bone 2.. 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 . Urethra length differs in human females and males. Mesangial cells are modified smooth muscle cells that lie between the capillaries. 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). 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). The adventitia (advnt) is the outer layer of fibrous connective tissue surrounding an organ.. It makes up the upper respiratory system along with the paranasal sinuses, oral cavity, pharynx, and larynx [2], "Orbit" can refer to the bony socket, or it can also be used to imply the contents. 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 . Like the eyelid, the foreskin is free to move after it separates from the glans, which usually occurs before or during puberty. They are situated deep in the bodies of the maxillae. The intrinsic muscles of the external ear are: . The outside of the foreskin is a continuation of the skin on the shaft of the penis, but the inner foreskin is a mucous membrane like the inside of the eyelid or the mouth. The outside of the foreskin is a continuation of the skin on the shaft of the penis, but the inner foreskin is a mucous membrane like the inside of the eyelid or the mouth. Cranial nerves are the nerves that emerge directly from the brain (including the brainstem), of which there are conventionally considered twelve pairs.Cranial nerves relay information between the brain and parts of the body, primarily to and from regions of the head and neck, including the special senses of vision, taste, smell, and hearing.. 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. The outer layer of connective tissue that surrounds an artery, or vein the tunica externa, is also called the tunica adventitia.. To some degree, its role is complementary to that of the serosa, which also provides a layer of tissue surrounding an organ. Other features include the pudendal cleft, pubic hair, sebaceous glands, the vulval vestibule, and the urogenital triangle. The outer layer of connective tissue that surrounds an artery, or vein the tunica externa, is also called the tunica adventitia.. To some degree, its role is complementary to that of the serosa, which also provides a layer of tissue surrounding an organ. 6] the temporal bone consists of three principal parts: This involves biological, psychological, physical, erotic, emotional, social, or spiritual feelings and behaviors. See more. Because it is a broad term, which has varied with historical contexts over time, it lacks a precise definition. The facial nerve exits the cranial cavity through the internal In general, vestibule is a small space or cavity at the beginning of a canal. Cranial nerves are the nerves that emerge directly from the brain (including the brainstem), of which there are conventionally considered twelve pairs.Cranial nerves relay information between the brain and parts of the body, primarily to and from regions of the head and neck, including the special senses of vision, taste, smell, and hearing.. It is anatomically homologous to the clitoral glans.The glans penis is part of the male reproductive system in humans and other mammals where it may appear smooth, spiny, In anatomy, a meatus (/ m i e t s /, mee-AY-ts), plural "meatus" or "meatuses", is a natural body opening or canal.. Meatus may refer to: . 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. It is composed of central and peripheral portions. A bone is a rigid organ that constitutes part of the skeleton in most vertebrate animals. The inner surface of the concha is covered by a mucous membrane that contains large vascular spaces that can change in size in order to control the width of the nasal cavity. The renal corpuscle is composed of two structures, the glomerulus and the Bowman's capsule. 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. Definition. The maxillary sinuses are innervated by the 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, Because it is a broad term, which has varied with historical contexts over time, it lacks a precise definition. A penis (plural penises or penes (/-n i z /)) is the primary sexual organ that male animals use to inseminate females (or hermaphrodites) during copulation. 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. Such organs occur in many animals, both vertebrate and invertebrate, but males do not bear a penis in every animal species, and in those species in which the male does bear a so-called penis, the penises in the various species The glans penis, commonly referred to as the glans, is a bulbous structure at the distal end of the human penis that is the most sensitive erogenous zone and primary anatomical source of male sexual pleasure.

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