Chap6&7
Terms
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- Skeletal Cartilage
- made of some variety of cartilage tissue which consists primarily of water.
- Cartilage
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has no nerves or blood vessels and is surrounded by dense irregular connective tissue.
Has a flexible matrix that can accommodate mitosis. - Calcification
- is when calcium salts deposited in the matrix and cause it to harden
- 3 types of cartilage contain the same basic components
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-chondrocyte cells
-lacunae within an extracellular matrix
-fibers - Hyaline Cartilage
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provide support with flexibility and resilience.
Is abundant in skeletal cartilage
Is present in:
Articular- covers the ends of long bones
Costal- Connects the ribs to the sternum
Respiratory- makes up larynx, reinforces air passages
Nasal- supports the nose.
The only fibers in the matrix are fine collagen fibers. - Elastic Fibers
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are much like Hyaline cartilage but they contain elastic fibers
Found in the external ear epiglottis. - Fibrocartilages
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highly compressible and have great tensile strength
Texture a perfect intermediate between hyaline and elastic cartilages.
Consist of roughly parallel rows of chondrocytes alternating with thick collagen fibers.
Found in menisci of the knee and in intervertebral discs. - Bones in the Human body
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206 Axial Skeleton bones of the skull, vertebral column, and rib cage.
Appendicular Skeleton upper and lower limbs, girdles (hip bones and shoulder bones) - Perichondrium
- contains the blood vessels from which nutrients diffuse through the matrix to reach the cartilage cells.
- Important Functions of the Bone and Cartilage
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Support- forms the framework that supports the body and cradles soft organs.
Protection- Provides a protective case for the brain, spinal cord and vital organs.
Movement- provides levers for muscles.
Mineral storage- reservoir for minerals especially calcium and phosphates
Blood cells formation- hematopoiesis occurs within the marrow cavities of bones.