| Paranasal sinus | | | | Paranasal sinuses. | | Latin | sinus paranasales | | Gray's | subject #223 998 | | Dorlands/Elsevier | s_12/12739013 | Paranasal sinuses are air-filled spaces, communicating with the nasal cavity, within the bones of the skull and face. Humans possess a number of paranasal sinuses, divided into subgroups that are named according to the bones within which the sinuses lie: Image File history File linksMetadata Illu09_sinuses. ...
Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ...
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It has been suggested that temporal fenestra be merged into this article or section. ...
The term sinus (Latin for bay, pocket, curve or bosom) is used in various contexts. ...
Grays Anatomy illustration of a human femur. ...
The maxillary sinus is the largest paranasal sinus. ...
A human eye Eyes are organs of vision that detect light. ...
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The frontal bone (os frontale, TA: A02. ...
In human anatomy, the forehead or brow is the bony part of the head above the eyes. ...
ethmoidal sinuses can be divided into 3: a) anterior b) middle c) posterior except the posterior ethmoidal sinus, all the ethmoidal sinuses will drain into middle meateus. ...
Your skull is in your back (this is obviously not true, I was just testing the website to see if it really works) The ethmoid bone (os ethmoidale) is a bone in the skull that separates the nasal cavity from the brain. ...
For the article about nose in humans, see human nose Human nose in profile Elephants have prehensile noses Dogs have very sensitive noses Anatomically, a nose is a protuberance in vertebrates that houses the nostrils, or nares, which admit and expel air for respiration in conjunction with the mouth. ...
The Sphenoidal Sinuses (or sphenoid) contained within the body of the sphenoid vary in size and shape; owing to the lateral displacement of the intervening septum they are rarely symmetrical. ...
The sphenoid bone (from Greek sphenoeides, wedgelike) is a bone situated at the base of the skull in front of the temporals and basilar part of the occipital. ...
It has been suggested that temporal fenestra be merged into this article or section. ...
The pituitary gland, or hypophysis, is an endocrine gland about the size of a pea that sits in a small, bony cavity (pituitary fossa) covered by a dural fold (sellar diaphragm) at the base of the brain. ...
Development Paranasal sinuses form developmentally through excavation of bone by air-filled sacs (pneumatic diverticula) from the nasal cavity. This process begins prenatally, and it continues through the course of an organism's lifetime. The nasal cavity (or nasal fossa) is a large air-filled space above and behind the nose in the middle of the face. ...
Sinuses in animals Paranasal sinuses occur in a variety of animals (including most mammals, birds, non-avian dinosaurs, and crocodilians). In non-humans, the bones occupied by sinuses are quite variable. Orders Subclass Monotremata Monotremata Subclass Marsupialia Didelphimorphia Paucituberculata Microbiotheria Dasyuromorphia Peramelemorphia Notoryctemorphia Diprotodontia Subclass Placentalia Xenarthra Dermoptera Desmostylia Scandentia Primates Rodentia Lagomorpha Insectivora Chiroptera Pholidota Carnivora Perissodactyla Artiodactyla Cetacea Afrosoricida Macroscelidea Tubulidentata Hyracoidea Proboscidea Sirenia The mammals are the class of vertebrate animals primarily characterized by the presence of mammary...
For other meanings of bird, see bird (disambiguation). ...
Orders Saurischia Sauropodomorpha Theropoda Ornithischia Dinosaurs are giant reptiles that dominated the terrestrial ecosystem for most of their 165-million year existence. ...
A crocadilian is a crocodile-like dinosaur. ...
Biological function The biological role of the sinuses is debated, but a number of possible functions have been proposed: - Decreasing the relative weight of the front of the skull, and especially the bones of the face. The shape of the facial bones is important, as a point of origin and insertion for the muscles of facial expression.
- Increasing resonance of the voice.
- Providing a buffer against blows to the face.
- Insulating sensitive structures like dental roots and eyes from rapid temperature fluctuations in the nasal cavity.
- Humidifying and heating of inhaled air because of slow air turnover in this region
The human voice consists of sound made by a human using the vocal folds for talking, singing, laughing, crying and screaming. ...
Ailments -
For more details on this topic, see Sinusitis. The paranasal sinuses are joined to the nasal cavity via small orifices called ostia. These become blocked relatively easily by allergic inflammation, or by swelling in the nasal lining which occurs with a cold. If this happens, normal drainage of mucus within the sinuses is disrupted, and sinusitis may occur. These conditions may be treated by drugs such as pseudoephedrine, which reduce moisture in the sinuses, or by traditional techniques of nasal cleansing. Sinusitis is an inflammation of the paranasal sinuses, which may or may not be as a result of infection, from bacterial, fungal, viral, allergic or autoimmune issues. ...
The nasal cavity (or nasal fossa) is a large air-filled space above and behind the nose in the middle of the face. ...
Sinus ostia refers to the opening that connects a sinus to the nasal cavity itself. ...
Acute viral nasopharyngitis, often known as the common cold, is a viral infectious disease of the upper respiratory system (nose and throat). ...
Mucus is a slippery secretion of the lining of various membranes in the body (mucous membranes). ...
Sinusitis is an inflammation of the paranasal sinuses, which may or may not be as a result of infection, from bacterial, fungal, viral, allergic or autoimmune issues. ...
Pseudoephedrine (commonly abbreviated as PSE) is a sympathomimetic amine commonly used as a decongestant. ...
Nasal irrigation is an ancient personal hygiene practice that used warm salty water to clean ones nasal cavity. ...
Malignancies of the paranasal sinuses comprise approximately 0.2% of all malignancies. About 80% of these malignancies arise in the maxillary sinus. Tumors of the sphenoid and frontal sinuses are extremely rare. Tumor or tumour literally means swelling, and is sometimes still used with that meaning. ...
Other sinuses The paranasal sinuses are not the only sinuses within the skull; the mastoid cells in the mastoid bone around the middle ear are also a type of sinus. A section of the mastoid process shows it to be hollowed out into a number of spaces, the mastoid cells, which exhibit the greatest possible variety as to their size and number. ...
The mastoid portion of the temporal bone forms the posterior part of the temporal bone. ...
The middle ear is the portion of the ear internal to the eardrum, and external to the oval window of the cochlea. ...
Etymology Sinus is a Latin word meaning a fold or pocket; in particular the front pocket in a toga. Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ...
Fold or folding may refer to: fold (geology) folding, in poker, is the act of withdrawing from a hand rather than meeting the bet folding ingredients together is a cooking technique protein folding origami, the art of paper folding pattern welding, the folding of metal This is a disambiguation page...
An example of a pocket as seen from the inside with some of its contents. ...
Roman clad in toga The toga was a distinctive garment of Ancient Rome. ...
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