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Topic: Ethmoid bone Cribriform Plate

	Cribriform plate - Psychology Wiki - a Wikia wiki
		The cribriform plate of the ethmoid bone (horizontal lamina) is received into the ethmoidal notch of the frontal bone and roofs in the nasal cavities.
		On either side of the crista galli, the cribriform plate is narrow and deeply grooved; it supports the olfactory bulb and is perforated by foramina for the passage of the olfactory nerves.
		At the front part of the cribriform plate, on either side of the crista galli, is a small fissure which is occupied by a process of dura mater.
	psychology.wikia.com /wiki/Cribriform_plate (557 words)

	Prelab Images - Ear & Nasal Cavity
		The medial pterygoid plate and the pterygoid hamulus are illustrated in plates 6 and 8.
		Plates 6, 44, and 45 identify the sphenoid, frontal, and maxillary sinuses.
		Plates 59 and 60 identify the lingual tonsil at the root of the tongue posterior to the foramen cecum.
	www.med.umich.edu /lrc/coursepages/M1/anatomy/html/nervous_system/ear_pre.html (1585 words)

	Head Lecture notes
		The last piece of cartilage to ossify is between the body of the sphenoid bone and the occipital bone, anterior to the foramen magnum: this is the spheno-occipital synchondrosis (the epiphyseal plate for growth in length of the base of the skull and it ossifies at age 25).
		The cribriform plate of the ethmoid with the crista galli transmits olfactory nerves from the upper part of the nasal cavity; this is a possible route for infection or escape route for CSF in skull fractures.
		The hypoglossal canal (anterior condylar) canal and the posterior condylar canal.
	web.indstate.edu /thcme/duong/head.html.txt (1219 words)

	II. Osteology. 5a. 6. Ethmoid bone. Gray, Henry. 1918. Anatomy of the Human Body.
		The ethmoid bone is exceedingly light and spongy, and cubical in shape; it is situated at the anterior part of the base of the cranium, between the two orbits, at the roof of the nose, and contributes to each of these cavities.
		150, 151) is a thin, flattened lamina, polygonal in form, which descends from the under surface of the cribriform plate, and assists in forming the septum of the nose; it is generally deflected a little to one or other side.
		The cribriform plate is ossified partly from the perpendicular plate and partly from the labyrinths.
	www.bartleby.com /107/36.html (1277 words)

	Prelab Images - Scalp, Cranial Cavity, Meninges & Brain
		Plates 6 and 9 label the crista galli, greater and lesser wings of the sphenoid bone, and sella turcica.
		Plate 10 labels all of the following: foramen rotundum, foramen ovale, foramen spinosum, foramen lacerum, internal acoustic meatus, jugular foramen, hypoglossal canal, and the foramina of condyloid and mastoid emissary veins (labeled mastoid foramen and condylar canal).
		The frontal, parietal, occipital, and temporal lobes of the cerebrum are identified in plate 99.
	anatomy.med.umich.edu /nervous_system/scalp_pre.html (1392 words)

	Names of the bones
		- the bones of the distal row articulate with the metacarpals; the trapezium is the lateral bone in the distal row.
		The medial one is on the head-side of the bone.
		It is posterior to the frontal bone, inferior and medial to the temporal bones and anterior to the occipital bone.
	bio.winona.edu /dapkus/211/skeletal/textwo.htm (8450 words)

	[No title] (Site not responding. Last check: 2007-10-10)
		Attaches from the scaphoid fossa of medial pterygoid plate, spine of sphenoid bone, and cartilage of pharyngotympanic tube TO palatine aponeurosis.
		The bones associated with the nose are the nasal, maxillary, frontal, ethmoid, palatine, sphenoid, inferior nasal concha and vomer.
		The fibers pass through foramina in the cribriform plate of the ethmoid bone, pierce the duran and arachnoid of the brain, and enter the olfactory bulb in the anterior cranial fossa.
	www.med.unc.edu /wms/firstaid/ga4-hn9.doc (2092 words)

	Skull 4a
		Lateral to the sella turcica are the butterfly-shaped greater wings of the sphenoid bone.
		Immediately anterior to the sphenoid bone is the ethmoid bone, which forms the roof of the nasal cavity and a portion of the partition (nasal septum) dividing the nasal cavity into the right and left sides.
		The superior surface of the ethmoid bone forming the roof of the nasal cavity is called the cribriform plate.
	bioweb.uwlax.edu /APlab/Table_of_Contents/Lab_03/Skull_4/Skull_4a/skull_4a.html (237 words)

	Cerebrospinal Fluid Rhinorrhea
		In this area, the dura is tightly adherent to the thin bone of the cribriform plate and roof of the ethmoid.
		The ethmoid labyrinth is entered by perforating the lacrimal bone and lamina papyrecea.
		Extracranial repairs are associated with decreased morbidity, decreased incidence of anosmia, and superior exposure of the sphenoid, parasellar, and posterior ethmoid regions.
	www.bcm.edu /oto/grand/120398.html (5721 words)

	Articles - Skull (Site not responding. Last check: 2007-10-10)
		The bones of the splanchnocranium and the sides and roof of the neurocranium are formed by intramembranous (or dermal) ossification, while the bones supporting the brain (the occipital, sphenoid, temporal, and ethmoid) are largely formed by endochondral ossification.
		The bones of the roof of the skull are initially separated by regions of dense connective tissue called "sutures".
		When a good amount of bones are found, such as at Spitalfields in the UK and Jomon shell mounds in Japan, osteologists can use such traits, such as proportions of length, height, width, to know the relationships of population of the study, with living or extinct ones.
	www.1-helmets.com /articles/Skull (1142 words)

	Ethmoid bone - Wikimd (Site not responding. Last check: 2007-10-10)
		[[Perpendicular Plate (lamina perpendicularis; vertical plate)]]—The perpendicular plate (Figs.
		Ossification—The ethmoid is ossified in the cartilage of the nasal capsule by three centers: one for the perpendicular plate, and one for each labyrinth.
		Articulations—The ethmoid articulates with fifteen bones: four of the cranium—the frontal, the sphenoid, and the two sphenoidal conchæ; and eleven of the face—the two nasals, two maxillæ, two lacrimals, two palatines, two inferior nasal conchæ, and the vomer.
	www.wikimd.org /index.php?title=Ethmoid_bone (1146 words)

	Gray, Henry. 1918. Anatomy of the Human Body. Page 153
		The presphenoid is united to the postsphenoid about the eighth month, and at birth the bone is in three pieces (Fig.
		—The more important of these are: the pterygospinous, stretching between the spina angularis and the lateral pterygoid plate (see cervical fascia); the interclinoid, a fibrous process joining the anterior to the posterior clinoid process; and the caroticoclinoid, connecting the anterior to the middle clinoid process.
		—The sphenoid articulates with twelve bones: four single, the vomer, ethmoid, frontal, and occipital; and four paired, the parietal, temporal, zygomatic, and palatine.
	www.bartleby.com /107/pages/page153.html (596 words)

	Skull
		It is a fragile "foamy" bone made up of thin plates of bone surrounding many air-filled sinuses.
		you have three structures that all have "zygomatic" in them: a bone: zygomatic bones, a part of a bone: zygomatic process of the temporal bone and a structure (to be illustrated soon) made up of parts of two bones: zygomatic arch made up of parts of the temporal and zygomatic bones.
		The superior part of the bony part of the septum consists of a thin downward extension of the ethmoid bone which lies on the midline.
	bio.winona.edu /dapkus/211/Skeletal/skull.htm (2161 words)

	Maxillofacial Trauma
		Once the occlusion has been established, depending on the nature of the fracture, a bone plate is surgically placed across the fracture site (open reduction) aiding in stabilization of the fracture.
		Anteriorly, the space is demarcated by the frontal process of the maxilla, the nasal bones, and the frontal process of the frontal bone.
		Posteriorly, the boundary is the anterior aspect of the sphenoid bones and the roof is formed by the cribriform plate of the ethmoid bone.
	www.universityoralsurgery.com /proc/proc_trauma.html (1343 words)

	Ear, Nose & Throat Journal: Endoscopic view of the posterior ethmoid artery (Site not responding. Last check: 2007-10-10)
		The anterior ethmoid artery, a branch of the ophthalmic artery, leaves the orbit via the anterior ethmoid foramen, crosses the roof of the anterior ethmoid sinus, and supplies the anterior ethmoid cells and frontal sinus (figure, A).
		The anterior ethmoid artery supplies the anterior one-third of the lateral wall of the nasal cavity and a similar portion of the nasal septum.
		According to Stammberger, one way to find the anterior ethmoid artery by the endoscopic approach is to follow the anterior surface of the ethmoid bulla in the direction of the roof of the ethmoid sinus.
	www.findarticles.com /p/articles/mi_m0BUM/is_4_83/ai_n6077733 (878 words)

	NGT: Anatomy
		The nasal floor is comprised of the hard palate (including the maxilla and the palantine bone) and the soft palate.
		The nasal septum separates the right and left nasal cavities and contains both cartilage and bone (including the vomer and the perpendicular plate of the ethmoid bone.) The superior, middle, and inferior turbinates extend from the lateral walls of the nasal cavity; these structures are projections of the walls of the maxillary and ethmoid sinuses.
		20 The cribriform plate (a portion of the ethmoid bone) is very thin and if fractured, may provide a misdirected NGT a portal of entry directly into the cranial cavity.
	www.emprocedures.com /ngt/anatomy.htm (344 words)

	[No title] (Site not responding. Last check: 2007-10-10)
		Which of the following matches between bone and structure is FALSE: a) sphenoid bone - sella turcica b) ethmoid bone - cribriform plate c) sphenoid bone - foramen ovale d) sphenoid bone - optic canal e) sphenoid bone - internal auditory meatus 15.
		The straight sinus: a) lies at the junction of the falx cerebri and the tentorium cerebelli b) connects the cavernous sinus with the transverse sinus c) lies in the occipital bone d) connects the great cerebral vein (of Galen) with the sigmoid sinus e) carries arterial blood 17.
		Which statement about the maxillary artery is FALSE: a) it is a branch of the external carotid b) it supplies the muscles of mastication c) it supplies a portion of the dura d) it supplies the muscles of the tongue e) it supplies the teeth of the lower jaw 47.
	www.sinc.sunysb.edu /Class/hba360/II1997.doc (1125 words)

	Figure 52-1 (Site not responding. Last check: 2007-10-10)
		The two ethmoidal labyrinths are united by the cribriform plate.
		The perpendicular plate, which forms the upper part of the nasal septum, is set at a right angle to the horizontally placed cribriform plate.
		The lateral surface of each labyrinth forms a part of the medial wall of the orbit and is termed the orbital plate of the ethmoid bone.
	www.dartmouth.edu /~humananatomy/figures/chapter_52/52-1.HTM (114 words)

	CHAPTER 7: THE SKELETAL SYSTEM
		Wormian bones (or sutural bones) are tiny bones within the skull that lie between major skull bones.
		cartilage at the junction of the diaphysis and epiphyses (growth plate).
		During infancy and childhood, long bones lengthen entirely by growth at the epiphyseal plates and all bones grow in thickness by a process called appositional growth.
	webs.ashlandctc.org /mflath/10thedchap07.htm (1803 words)

	ipedia.com: Skull Article (Site not responding. Last check: 2007-10-10)
		The anterior fontanelle is located at the junction of the frontal and parietal bones, it is a "soft spot" on a baby's forehead.
		The meninges are the membranes that separate the brain from the skull.
		One, the pterion ossicle, sometimes exists between the sphenoidal angle of the parietal bone and the great wing of the sphenoid bone.
	www.ipedia.com /skull.html (660 words)

	The Department of Otolaryngology Head and Neck Surgery
		It is composed of septal cartilage, as well as bones including the vomer, perpendicular plate of the ethmoid, maxillary crest and premaxilla.
		The middle turbinate, a projection of the ethmoid bone, is associated with the middle meatus.
		The uncinate process is a thin projection of the ethmoid bone that separates the middle meatus from the nasal cavity.
	www.hopkinsmedicine.org /Otolaryngology/sinus/anatomy.html (617 words)

	Indmedica - Journal of the Anatomical Society of India
		Ethmoid bone - cribriform plate; crista galli; Frontal bone - frontal crestl orbital plates; Sphenoid bone - jugum sphenoidale; lesser wing;
		groove for posterior branch of middle meningeal artery and vein; parietal bone - antero-inferior angle; groove for anterior branch of middle meningeal artery and vein; foramina - superior orbital fissure; foramen rotundum; canaliculus innominatus; foramen lacerum; foramen ovale; foramen spinosum; hiatuses for greater and lesser petrosal nerves.
		roof - orbital plate of the frontal; lesser wing of the sphenoid; 6.
	www.indmedica.com /anatomy/pindex1.cfm?anid=10&aiid=2 (2780 words)

	Article : Esthesioneuroblastoma With Hepatic And Splenic Metastases ; Author : S Shekhar ; Co-Author(s) : Rajesh, S ... (Site not responding. Last check: 2007-10-10)
		Olfactory neuroblastoma (ON) is an uncommon malignant tumor which arises from the olfactory epithelium found in the cribriform region, the upper third of the nasal septum, and the superior and supreme nasal turbinates.
		There was associated destruction of the greater wing of the sphenoid and cribriform plate on the right side with intracranial extension into the right frontal lobe.
		ONs are solid and enhancing nasal cavity masses that may manifest erosion into nearby osseous structures of the orbital plate, ethmoid bone,cribriform plate, and fovea ethmoidalis.
	www.ijri.org /articles/archives/2003-13-2/pns219.htm (1255 words)

	Biology 121 study concepts for Chapter 1 material
		parietal bones -- sagittal suture, coronal suture, squamous suture, lambdoid suture
		ethmoid bone -- cribriform plate, crista galli, perpendicular plate, middle nasal concha
		Which of the bones are found in the nasal cavity?
	www.yhc.edu /external/bio/anatob7.html (282 words)

	[No title]
		T F Pterion is the point of contact between parietal, sphenoid, occipital and temporal bones*.
		Roughly horizontal portion of the frontal bone that bears impressions left by the brain: _______orbital plate_________.
		Part of ethmoid bone comprising paper-thin medial wall of orbit: __lamina papyracea (orbital plate okay)__.
	www.uhmc.sunysb.edu /anatomy/HBA521oldexams/skull02.doc (543 words)

	eMedicine - Anatomy of Olfactory System : Article by Amir Vokshoor, MD
		The cribriform plate of the ethmoid bone, separated at the midline by the crista galli, contains multiple small foramina through which the olfactory nerve fibers, or fila olfactoria, traverse.
		Head trauma leading to fracture of the cribriform plate may cause cerebrospinal fluid (CSF) rhinorrhea and a potential for meningitis.
		Repair of leaks at the level of the cribriform plate may be achieved from the intracranial approach, intranasal (endoscopic) approach, or both, depending on the nature of the defect.
	www.emedicine.com /ent/topic564.htm (2092 words)

	Introduction
		Compare and contrast these two types of bone, with respect to their structure, function, and location.
		Identify the bones (and markings) of the axial skeleton, that are listed on the bone list.
		You will know and be able to identify the bones (underlined and bold) and markings, cavities, sutures, and other structures (in italics) of the human skeleton that are listed below.
	biology.edcc.edu /biology_230_SG_1.htm (2000 words)

	Anatomy Tables - Ear & Nasal Cavity
		pneumatized spaces (3-18 in number) within the ethmoid bone; located between the orbits; three groups may be identified: anterior (drain into the hiatus semilunaris in the middle nasal meatus), middle (drain onto the apex of the bulla ethmoidalis in the middle nasal meatus), posterior (drain into the superior nasal meatus)
		three curved bony plates on the lateral side of each nasal cavity; the superior and middle concha are part of the ethmoid bone, the inferior concha is a separate bone
		A pathological condition of the bony labyrinth of the ear, in which there is formation of spongy bone (otospongiosis), especially in front of and posterior to the footplate of the stapes, it may cause bony ankylosis of the stapes, resulting in conductive hearing loss.
	www.med.umich.edu /lrc/coursepages/m1/anatomy/html/nervous_system/ear_tables.html (1684 words)

	Pronounciation Drill for the Axial Skeleton (Site not responding. Last check: 2007-10-10)
		Locate the bones listed in Lab 4 of your syllabus in the figures included in this lab or in your textbook.
		The structures on the frontal, pareital and occiptal bones are easy to pronounce once you master the position of the "long or short" vowels.
		The temporal bone has a few structures that are "tongue twisters", but you should already be familiar with terms like me/a/tus.
	ext.sac.edu /faculty_staff/mansfield_patricia/5lab4_pronounciation.html (153 words)

	Table of Contents
		The authors of the current study performed histological analyses to define the structure of the transition from neural foramina to the cranial base (neural-dural transition) at the cribriform plate, particularly as related to cerebrospinal fluid (CSF) fistula formation and surgical intervention in the region.
		Results of these examinations revealed a multilayered neural-dural transition at the cribriform plate, which consisted of an arachnoid membrane and a potential subarachnoid space as well as dura mater, periosteum, ethmoid bone, and associated layers of submucosa and mucosa of the paranasal air spaces.
		A subarachnoid space was identified around the olfactory nerves as they exited the neural foramina of the cribriform plates.
	www.thejns-net.org /jns/issues/v99n2/abs/n0990362_r.html (355 words)

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