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The nasalis muscle is a sphincter-like muscle of the nose. It has a transverse part and an alar part. It compresses the nasal cartilages, and can "flare" the nostrils. It can be used to test the facial nerve (VII), which supplies it.
Muscles. The muscles of the nose are a subgroup of the facial muscles. They are involved in respiration and facial expression. The muscles of the nose include the procerus, nasalis, depressor septi nasi, levator labii superioris alaeque nasi, and the orbicularis oris of the mouth.
The nasal septum contains bone and hyaline cartilage. [3] It is normally about 2 mm thick. [4] The nasal septum is composed of four structures: Maxillary bone (the crest) Perpendicular plate of ethmoid bone. Septal nasal cartilage (ie, quandrangular cartilage) Vomer bone. The lowest part of the septum is a narrow strip of bone that projects ...
The frontalis muscle is thin, of a quadrilateral form, and intimately adherent to the superficial fascia. It is broader than the occipitalis and its fibers are longer and paler in color. It is located on the front of the head. The muscle has no bony attachments. Its medial fibers are continuous with those of the procerus; its intermediate ...
Muscles. There are four muscles associated with the function of the Eustachian tube: Levator veli palatini (innervated by the vagus nerve) Salpingopharyngeus (innervated by the vagus nerve) Tensor tympani (innervated by the mandibular nerve of CN V) Tensor veli palatini (innervated by the mandibular nerve of CN V)
A nose is a protuberance in vertebrates that houses the nostrils, or nares, which receive and expel air for respiration alongside the mouth. Behind the nose are the olfactory mucosa and the sinuses. Behind the nasal cavity, air next passes through the pharynx, shared with the digestive system, and then into the rest of the respiratory system.
Muscles Diagram of the muscular system of a cat Internal abdominal oblique. This muscle's origin is the lumbodorsal fascia and ribs. Its insertion is at the pubis and linea alba (via aponeurosis), and its action is the compression of abdominal contents. It also laterally flexes and rotates the vertebral column. Transversus abdominis
List of muscles. The facial muscles include: Occipitofrontalis muscle; Temporoparietalis muscle; Procerus muscle; Nasalis muscle; Depressor septi nasi muscle; Orbicularis oculi muscle; Corrugator supercilii muscle; Depressor supercilii muscle; Auricular muscles (anterior, superior and posterior) Orbicularis oris muscle; Depressor anguli oris ...
The extraocular muscles, or extrinsic ocular muscles, are the seven extrinsic muscles of the eye in humans and other animals. Six of the extraocular muscles, the four recti muscles, and the superior and inferior oblique muscles , control movement of the eye .
The superior oblique muscle or obliquus oculi superior is a fusiform muscle originating in the upper, medial side of the orbit (i.e. from beside the nose) which abducts, depresses and internally rotates the eye. It is the only extraocular muscle innervated by the trochlear nerve (the fourth cranial nerve).
