Skeleton and Joint | One Shot Video

Skeleton and Joint | One Shot Video
Bone Histology:
Bone is a rigid, calcified tissue that makes up the human skeleton. It is composed of cells, collagen fibers, and mineralized extracellular matrix. The primary cells in bone tissue include:
Osteoblasts: Cells responsible for bone formation.
Osteocytes: Mature bone cells that maintain the bone matrix.
Osteoclasts: Cells involved in bone resorption (breakdown).
The extracellular matrix is rich in calcium phosphate crystals, providing bone with its hardness. Bone tissue can be categorized into:
Compact Bone (Cortical Bone): Dense and forms the outer layer of bones.
Spongy Bone (Cancellous Bone): Less dense, found in the interior of bones, with a lattice-like structure.
Cartilage Histology:
Cartilage is a flexible, semi-rigid connective tissue that provides cushioning and support in joints. It consists of chondrocytes (cartilage cells) embedded in a matrix rich in collagen fibers and proteoglycans. There are three main types of cartilage:
Hyaline Cartilage: Most common, found in joints, the nose, and respiratory passages.
Elastic Cartilage: More flexible, found in the ear and epiglottis.
Fibrocartilage: Strongest type, found in intervertebral discs and the menisci of the knee.
Cartilage lacks blood vessels (avascular), so nutrients are supplied by diffusion from surrounding tissues.
Human Endoskeleton:
The human endoskeleton is an internal framework composed of bones and cartilage. It provides structural support, protection for vital organs, and facilitates movement through the attachment of muscles. The human skeleton is divided into two parts:
Axial Skeleton: Includes the skull, vertebral column, and rib cage. It supports the central axis of the body.
Appendicular Skeleton: Comprises the limbs and girdles (shoulder and pelvic girdles), allowing for movement and interaction with the environment.
Joints:
Joints (articulations) are the points where two or more bones meet. They allow for movement and flexibility. Joints can be classified based on their structure and function:
Fibrous Joints: Immovable, connected by dense connective tissue (e.g., sutures in the skull).
Cartilaginous Joints: Slightly movable, connected by cartilage (e.g., intervertebral discs).
Synovial Joints: Freely movable, characterized by a joint cavity filled with synovial fluid (e.g., knee, elbow). There are several types of synovial joints, including hinge, ball-and-socket, and pivot joints.
These components of the human skeletal system work together to support the body, protect organs, and enable movement.
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sir with due respect first of all thank you for providing us such a channel that we can easily study our HSC syllabus but sir i cant find chapter no 7,8,9,10 from 1st year book ...plz guide if you didn't uploaded the video please sir its a humble request please post those videos also. I personally like the way you teach and it is hard for me to shift from one teacher to other because everyone has different methods of teaching. Sir i am waiting for your response i will be grateful if you reply me

[@whoisthis1616]

Thankyou sir and pls next coordination cause its lengthy

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Waiting for nervous and chemical co-ordination

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[@NaseemGopang]

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Sir please upload coordination and control lecture

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Sir Injuries in joints , bone fractures , aur doosre disorders ...krne hain cover ?

[@DrAsimLectures]

No

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Sir endosteum is inner or outer lining of medullary canal?

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Brillant lec

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waiting❤🎉

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Sir bone healing Endoosteum karwate ha na sir? book maim bhi endopsteum likha hua ha .

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[@drmasroorah]

Sir if we are provided with the options like Osteocyte and Osteon then which of these called structural and functional unit of bone?

[@DrAsimLectures]

Osteon

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Is cortical bone also called compact bone?

[@DrAsimLectures]

Yes

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1❤❤❤

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