Cartilage is a flexible connective tissue found in joints between bones. There are three main types of cartilage - hyaline, fibrocartilage, and elastic cartilage. Cartilage provides support, acts as a gliding surface in joints, and serves as a template for bone formation. Joints, also called articulations, are places where bones connect. The three major types of joints are fibrous, cartilaginous, and synovial joints. Synovial joints are the most common and include structures like bones, cartilage, synovial fluid, ligaments, and a joint capsule. There are different types of synovial joints based on their shape and movement capabilities, including hinge, ball-and-socket
The topic includes:
definition and function bone
classification of bone according to shape, development, region and structure
gross structure of long bone
parts of a bone (epiphysis, diaphysis, metaphysis and epiphysial plate of cartilage)
blood supply of bone
growth of a long bone
The topic includes:
definition and function bone
classification of bone according to shape, development, region and structure
gross structure of long bone
parts of a bone (epiphysis, diaphysis, metaphysis and epiphysial plate of cartilage)
blood supply of bone
growth of a long bone
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
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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.for more details please visit
www.indiandentalacademy.com
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.for more details please visit
www.indiandentalacademy.com
Arthrology (General Lectures) Study of Joints
(Human anatomy)
by DR RAI M. AMMAR
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it consist of detailed description about joints, their number and location. we briefly explained about the types of joints with colorful images. easy to understand for students with the help of pictures. language is also simple.it will be helpful for the beginners.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
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.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
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
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
4. 6-4
3 Major Functions of Cartilage
Supporting soft tissues.
Providing a gliding surface at
articulations (joints)
Providing a model for the formation of
most of the bones in the body.
5. 6-5
Types of Cartilage
Three types of cartilage:
Hyaline cartilage
Most abundant kind
Has a perichondrium (membrane)
Associated with synovial joints
Most bones first modeled in hyaline cartilage
Fibrocartilage
Has collagen fibers
Intervertebral discs, pubic symphysis
Elastic cartilage
Has elastic fibers
Ear, respiratory tubing
9. 9-9
Mobility and Stability in Joints
Motion permitted ranges from none to various
extensive motions.
Structure determines both its mobility and its stability.
more mobile = less stable
11. 9-11
Structural
Classification of Joints
A fibrous joint occurs where bones are held together
by dense regular (fibrous) connective tissue.
A cartilaginous joint occurs where bones are joined
by cartilage.
A synovial joint
has a fluid-filled synovial cavity
bones are enclosed within a capsule
bones are joined by various ligaments
12. 9-12
Classification of Joints
Functionally based on the extent of movement they
permit:
Synarthrosis is an immovable joint.
Amphiarthrosis is a slightly movable joint.
Diarthrosis is a freely movable joint.
13. 9-13
Fibrous Joints
Union is due to dense fibrous tissue.
Most are immovable or only slightly
movable.
Have no joint cavity.
Three types.
Gomphosis
sutures
syndesmosis
15. Sutures
Joints of skull bone
Fixed
Affected by sutural ligaments
Sites of active bone growth
Process of obliteration of sutures is
called synostosis.
9-15
16. Gomphosis
(peg & socket joints)
Fibrous joints in which teeth fit into their
sockets.
Periodontal ligament connects the tooth
with socket or alveolus.
9-16
17. Varieties of sutures.
Depends on shape of articulating surfaces and mode
of fusion of articulating bones.
Serrate sutures (sagittal suture).
Denticulate suture (lambdoid suture).
Squamous Plane sutures (temporo parietal suture).
Limbus suture
Plane sutures ( inter palantine suture).
Wedge and groove suture(vomero sphenoid suture)
9-17
18. 9-18
Cartilaginous Joints
Bones are attached to each other by cartilage.
Lack a joint cavity.
Two types.
Primary cartilaginous joint or synchondrosis
Symphyses, secondary cartilaginous joints.
21. 9-21
Synovial Joints
Freely movable articulations
Classified as diarthroses
Bones are separated by a space called a joint
cavity
Most of the commonly known joints in the
body
glenohumeral (shoulder) joint
temporomandibular joint
elbow joint
knee joint
24. 9-24
General Anatomy of Synovial
Joints – Accessory Structures
Bursae
fibrous, saclike structure that contains synovial fluid and is
lined by a synovial membrane
Fatpads
often distributed along the periphery of a synovial joint
act as packing material and provide some protection for the
joint
fill the spaces that form when bones move and the joint
cavity changes shape
Tendons
attaches a muscle to a bone
help to stabilize joints
26. STRUCTURES COMPRISING A
SYNOVIAL JOINT
• ARTICULAR BONY SURFACES:
• THE CONTIGUOUS BONY SURFACES, WHICH ARE TAKING
PART IN THE FORMATION OF A JOINT, ARE CALLED ARTICULAR
BONY SURFACES. THESE SURFACES ARE NOT IN CONTINUITY
WITH EACH OTHER BUT ARE RATHER WELL ADAPTED TO
EACH OTHER.
• EACH BONY ARTICULAR SURFACE IS COVERED BY BLUISH-
WHITE ARTICULAR-WHICH IS AVASCULAR, ANERVOUS AND
DEVOID OF PERICHONDRIUM.
• IT DERIVES ITS NUTRITION BY DIFFUSION FROM THREE
SOURCES:
• SYNOVIAL FLUID.
• EPIPHYSEAL VESSELS.
• SYNOVIAL VESSELS (CIRCULUS VASCULOSUS ARTICULI)
26
28. JOINT CAVITY (SYNOVIAL CAVITY)
• EVERY SYNOVIAL JOINT HAS A
SPECIAL CAVITY LINED BY SYNOVIAL
MEMBRANE. THIS CAVITY IS NOT AN
EMPTY SPACE, BUT IS FILLED WITH A
LUBRICATING FLUID CALLED
SYNOVIAL FLUID.
28
29. ARTICULAR CAPSULE AND ITS
THICKENINGS (CAPSULAR LIGAMENTS)
• EACH JOINT IS SURROUNDED BY A TUBULAR DENSE
FIBROUS CAPSULE, WHICH IS ATTACHED TO THE ARTICULAR
LINES OF THE PARTICIPATING BONES.
• EXAMPLES
– EPIPHYSEAL LINE OF HEAD OF FEMUR IS COMPLETELY
INTRACAPSULAR.
– EPIPHYSEAL LINE OF LOWER END OF FEMUR IS
COMPLETELY EXTRA CAPSULAR.
– EPIPHYSEAL LINE OF UPPER END PARTLY EXTRA
CAPSULAR.
29
36. 9-36
Types of Synovial Joints
Classified by the shapes of their articulating surfaces
Types of movement they allow
uniaxial if the bone moves in just one plane
biaxial if the bone moves in two planes
multiaxial (or triaxial) if the bone moves in multiple
planes
37. 9-37
Types of Synovial Joints
From least movable to most freely movable, the six
specific types of synovial joints are:
Plane (gliding) joints intercarpal joint.
hinge joints Elbow joint.
pivot joints ,atlanto axial ,proximal radio ulnar joint
condyloid (ellipsoid) joints , knee
joint,metacarpophalangeal joint.
saddle joints.ankle joint,carpometacarpal joint.
ball-and-socket joints.shoulder joint ,hip joint.
42. MOVEMENTS OF THE SYNOVIAL
JOINTS
THE MOVEMENTS PERMITTED AT A JOINT (e.g.,
SYNOVIAL) ARE OF FOLLOWING TYPES:-
GLIDING.
ANGULAR.
ROTATION.
CIRCUMDUCTION.
MISCELLANEOUS.
9-42
43. I.GLIDING MOVEMENTS
IT IS THE SIMPLEST KIND OF MOVEMENTS IN
WHICH ONE SURFACE CRAWLS OVER THE
OTHER WITHOUT ANY ANGULAR OR ROTATORY
MOVEMENTS.
EXAMPLES:
INTER CARPAL JOINTS
INTER TARSAL JOINTS (ONLY GLIDING IS
POSSIBLE)
MANY SYNOVIAL JOINTS
9-43
44. II.ANGULAR MOVEMENTS
IT IMPLIES DECREASE OR INCREASE IN
ANGLE BETWEEN THE ADJOINING
BONES.
THE ANGULAR MOVEMENTS ARE OF
FOUR TYPES:
A) FLEXION
B) EXTENSION
C) ADDUCTION
D) ABDUCTION
9-44
62. 9-62
Arthritis
A group of inflammatory or degenerative
diseases of joints that occur in various forms.
swelling of the joint
pain
stiffness
Most prevalent crippling disease in the United
States.
gouty arthritis
osteoarthritis
rheumatoid arthritis