Nose is the part of respiratory system. External nose and nasal cavity. The visible portion that project from the face. It's skeleton is mainly cartilaginous ( small bony contributions are present). The superior bony part of the nose, including it's root, is covered by thin skin. Nasal septum has bony part vomer bone . Sometimes the deviation is so severe that the nasal septum is in contact with the lateral wall of the nasal cavity and often obstruct breathing or except snoring........................
Boundaries of the nasal cavity and often do I get to know about you guys are present for the nasal cavity and often do I need some of you thank god I was in my heart and soul mate is the nasal cavity and I can is wider than the roof. Inferior concha is the longest and border and is formed by an independent bone covered by
The ear is the organ of hearing and, in mammals, balance. In mammals, the ear is usually described as having three parts the outer ear, the middle ear and the inner ear. The outer ear consists of the pinna and the ear canal.
The ear is the organ of hearing and, in mammals, balance. In mammals, the ear is usually described as having three parts the outer ear, the middle ear and the inner ear. The outer ear consists of the pinna and the ear canal.
Dentist in pune.(BDS. MDS) - Dr. Amit T. Suryawanshi. Nose & Paranasal sinuses.All Good Things
Dentist in pune. (BDS. MDS) - Dr. Amit T. Suryawanshi. Seminar- Nose & Paranasal sinuses.
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Uppermost parts of the respiratory tract and contain the olfactory receptors
Elongated wedge-shaped spaces with a large inferior base and a narrow superior apex
Skeletal framework consisting mainly of bone and cartilage
Nares – external opening of nose
Choanae - open into the nasopharynx
Bones that contribute to the skeletal framework of the nasal cavities include
Unpaired: ethmoid, sphenoid, frontal bone, and vomer;
Paired: nasal, maxillary, palatine and lacrimal bones, and inferior conchae
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
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Dentist in pune.(BDS. MDS) - Dr. Amit T. Suryawanshi. Nose & Paranasal sinuses.All Good Things
Dentist in pune. (BDS. MDS) - Dr. Amit T. Suryawanshi. Seminar- Nose & Paranasal sinuses.
Email ID- amitsuryawanshi999@gmail.com
Contact -Ph no.-9405622455
Subscribe our channel on youtube - Copy and paste this URL. https://www.youtube.com/channel/UC_gylEXTrjmEbbOTSXjuZ4Q/videos?view_as=public
Follow us on slideshare
Uppermost parts of the respiratory tract and contain the olfactory receptors
Elongated wedge-shaped spaces with a large inferior base and a narrow superior apex
Skeletal framework consisting mainly of bone and cartilage
Nares – external opening of nose
Choanae - open into the nasopharynx
Bones that contribute to the skeletal framework of the nasal cavities include
Unpaired: ethmoid, sphenoid, frontal bone, and vomer;
Paired: nasal, maxillary, palatine and lacrimal bones, and inferior conchae
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.
Anatomy of nose dental courses /certified fixed orthodontic courses by Indian...Indian dental academy
Welcome to Indian Dental Academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy has a unique training program & curriculum that provides students with exceptional clinical skills and enabling them to return to their office with high level confidence and start treating patients
State of the art comprehensive training-Faculty of world wide repute &Very affordable.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
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MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...NelTorrente
In this research, it concludes that while the readiness of teachers in Caloocan City to implement the MATATAG Curriculum is generally positive, targeted efforts in professional development, resource distribution, support networks, and comprehensive preparation can address the existing gaps and ensure successful curriculum implementation.
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Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
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Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
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Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
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it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
3. Nose
Introduction:
• The nose is the part of the respiratory tract superior to the hard palate
• It contains the peripheral organ of smell
Composition:
• external nose
• nasal cavity
the nasal cavity is divided into right and left cavities by the nasal
septum
Functions:
• olfaction (smelling)
• respiration (breathing)
• filtration of dust
• humidification of inspired air
• reception and elimination of secretions from the paranasal sinuses
and nasolacrimal ducts
4. External Nose
• is the visible portion that projects from the face
• its skeleton is mainly cartilaginous (small bony contributions are
present)
• The part of the external nose that extends from the root of the nose
to the apex (tip) of the nose is called the dorsum
• The inferior surface of the nose is pierced by two piriform
openings called nares (nostrils, anterior nasal apertures)
• The nares are bounded laterally by the alae (wings) of the nose
• The superior bony part of the nose, including its root, is covered by
thin skin
• The skin over the cartilaginous part of the nose is covered with
thicker skin, which contains many sebaceous glands
5.
6.
7. • The skin extends into the anterior part of the nasal cavity called the
vestibule of the nose
• The vestibule of the nose has a variable number of stiff hairs called
vibrissae
• These hairs are usually moist and these help to filter dust particles
from air entering the nasal cavity
Skeleton of the External Nose
composed of:
I. bones
II. cartilages
The bony part consists of the:
nasal bones
frontal processes of the maxillae
nasal part of the frontal bone
nasal spine
bony parts of the nasal septum
8.
9.
10. • The cartilaginous part of the nose consists of five main cartilages and
small minor cartilages:
two lateral cartilages,
two alar cartilages,
and one septal cartilage
3 or 4 minor alar cartilages
The U-shaped alar cartilages are free and movable; they dilate or
constrict the nares when the muscles acting on the nose contract
Nasal Septum
• It divides the chamber of the nose into two nasal cavities
• It has a:
bony part
a soft mobile cartilaginous part
The components of the nasal septum are
perpendicular plate of the ethmoid bone
Vomer bone
11. septal cartilage
nasal crest of the maxillary bone
nasal crest of palatine bone
The perpendicular plate of ethmoid, vomer, nasal crests of maxillary
and palatine bones form the bony part of nasal septum
While the septal cartilage forms the cartilagenous part
The thin perpendicular plate of the ethmoid bone:
• forming the superior part of the nasal septum
• descends from the cribriform plate
• and is continued superior to this plate as the crista galli
The vomer: a thin flat bone, forms the posteroinferior part of the nasal
septum, with some contribution from the nasal crests of the maxillary
and palatine bones
The septal cartilage has a tongue-and-groove articulation with the edges
of the bony septum
12.
13.
14. CLINICALANATOMY
Nasal Fractures
• Because of the prominence of the nose, fractures of the nasal bones are
common facial fractures in automobile accidents and sports (unless face
guards are worn)
• Epistaxis (nosebleed) usually occurs
• In severe fractures, disruption of the bones and cartilages results in
displacement of the nose.
• When the injury results from a direct blow, the cribriform plate of the
ethmoid bone may also fracture
Deviation of the Nasal Septum
• The nasal septum is usually deviated to one side or the other
• This could be the result of a birth injury, but more often the deviation results
during adolescence and adulthood from trauma (e.g., during a fist fight)
• Sometimes the deviation is so severe that the nasal septum is in contact with
the lateral wall of the nasal cavity and often obstructs breathing or
exacerbates snoring
• The deviation can be corrected surgically
15. Nasal Cavity
• Divided into right and left halves by the nasal septum
• The nasal cavity is entered anteriorly through the nares
• It opens posteriorly into the nasopharynx through the choanae
• Mucosa lines the nasal cavity, except for the nasal vestibule, which is
lined with skin
• The superior one third of the nasal mucosa forms the olfactory area
• The inferior two thirds of the nasal mucosa forms the respiratory area
• The olfactory area contains the peripheral organ of smell; sniffing
draws air to the area
• Air passing over the respiratory area is warmed and moistened before
it passes through the rest of the upper respiratory tract to the lungs
16.
17.
18.
19. Boundaries of the Nasal Cavity
The nasal cavity has a:
roof
floor
medial wall
lateral wall
The roof :
• is curved and narrow, except at its posterior end
• it is divided into 3 parts
frontonasal
ethmoidal
sphenoidal
• They are named from the bones forming each part
The floor:
• is wider than the roof
• is formed by the;
palatine processes of the maxilla
horizontal plates of the palatine bone
20.
21. The medial wall :
formed by the nasal septum
The lateral walls :
• are irregular owing to three bony plates, the nasal conchae, which
project inferiorly, somewhat like louvers
Features on the lateral wall of the nasal cavity
• There is the presence of nasal conchae and they curve inferomedially
• The nasal conchae include;
Superior nasal concha
middle nasal concha
inferior nasal concha
• The conchae or turbinates of many mammals (especially running
mammals and those existing in extreme environments) are highly
convoluted, scroll-like structures that offer a vast surface area for heat
exchange
• Underneath each choncha in both humans with simple nasal conchae
and animals with complex turbinates is a recess or meatus
{passage(s) in the nasal cavity}
22.
23.
24. • The nasal cavity is thus divided into 5 passages:
1) a posterosuperiorly placed sphenoethmoidal recess
3 laterally located nasal meatus:
II) superior
III) middle
IV) inferior
V) and a medially placed common nasal meatus into which the four
lateral passages open
The inferior concha
• is the longest and broadest and is formed by an independent bone (of
the same name, inferior concha) covered by a mucous membrane that
contains large vascular spaces that can enlarge to control the caliber
of the nasal cavity
• When infected or irritated, the mucosa may swell rapidly, blocking the
nasal passage(s) on that side
25.
26.
27. The sphenoethmoidal recess :
• lying superoposterior to the superior concha,
• receives the opening of the sphenoidal sinus, an air-filled cavity in the
body of the sphenoid.
The superior nasal meatus :
• is a narrow passage between the superior and the middle nasal
conchae
• The posterior ethmoidal sinuses open into this superior nasal meatus
through one or more orifices
The middle nasal meatus:
• is longer and deeper than the superior one
• The anterosuperior part of this passage leads into a funnel-shaped
opening, the ethmoidal infundibulum through which it communicates
with the frontal sinus through a passage known as the frontonasal
duct
• the anterior ethmoidal cells opens on the ethmoidal infundibulum
directly or opens indirectly on the frontonasal sinus
28.
29.
30. • The ethmoidal infundibulum leads inferiorly into a semicircular groove
called the semilunar hiatus
• The maxillary sinus opens into the semilunar hiatus
• superior to the semilunar hiatus is a rounded elevation called the ethmoidal
bulla
• The ethmoidal bulla is only visible when the middle concha is removed
• The bulla is a swelling formed by middle ethmoidal cells that form the
ethmoidal sinuses
• Anterior and inferior to the semilunar hiatus is a hooklike process called the
uncinate process of the ethmoid bone
• This process articulates with the inferior nasal concha
The inferior nasal meatus :
• is a horizontal passage inferolateral to the inferior nasal concha
• The nasolacrimal duct, which drains tears from the lacrimal sac, opens into
the anterior part of this meatus
The common nasal meatus :
• is the medial part of the nasal cavity between the conchae and the nasal
septum, into which the lateral recesses and meatus open
31.
32.
33. The arterial supply
The arterial supply of the medial and lateral walls of the nasal cavity is
from five sources:
• Anterior ethmoidal artery (from the ophthalmic artery)
• Posterior ethmoidal artery (from the ophthalmic artery)
• Sphenopalatine artery (from the maxillary artery)
• Greater palatine artery (from the maxillary artery)
• Septal branch of the superior labial artery (from the facial artery)
The anterior part of the nasal septum is the site (Kiesselbach area) of
an anastomotic arterial plexus involving all five arteries supplying the
septum
The external nose also receives blood from the 1st and 5th arteries
listed above plus
• nasal branches of the infraorbital artery
• lateral nasal branches of the facial artery
34.
35. Venous drainage
• A rich submucosal venous plexus deep to the nasal mucosa drains into
the sphenopalatine, facial, and ophthalmic veins
Innervation
• olfactory nerve
• branches of the ophthalmic [V1] which include the anterior and
posterior ethmoidal nerves
• maxillary [V2] nerves which include;
posterior superior lateral nasal nerves
posterior superior medial nasal nerves
nasopalatine nerve
posterior inferior nasal nerves
36.
37. CLINICALANATOMY
Epistaxis
• Epistaxis (nosebleed) is relatively common because of the rich blood
supply to the nasal mucosa
• In most cases, the cause is trauma and the bleeding is from an area in
the anterior third of the nose (Kiesselbach area)
• Epistaxis is also associated with infections and hypertension
• Spurting of blood from the nose results from rupture of arteries
• Mild epistaxis may also result from nose picking, which tears veins in
the vestibule of the nose
Rhinitis
• The nasal mucosa becomes swollen and inflamed (rhinitis) during
severe upper respiratory infections and allergic reactions (e.g.,
hayfever)
• Swelling of the mucosa occurs readily because of its vascularity
38. Infections of the nasal cavities may spread to the:
• Anterior cranial fossa through the cribriform plate
• Nasopharynx and retropharyngeal soft tissues
• Middle ear through the pharyngotympanic tube (auditory tube), which
connects the tympanic cavity and nasopharynx
• Paranasal sinuses
• Lacrimal apparatus and conjunctiva