Chapter 6 Bone study guide(1) - Chapter 6 Review Questions...

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Chapter 6: Review Questions: The answers to the review questions are in your notes. These questions are in general in the order you will find them in your note set. 1. Where is each type of cartilage located in the body? Elastic Cartilage: External ear and epiglottis Hyaline Cartilage: Ribs and end of the bones (articular cartilage) Fibrocartilage: At the vertebral discs and pubis 2. Describe the composition of skeletal cartilage. Mostly made of water ALL CARTILAGE IS INERVE meaning that you can’t feel pain if damaged. Does not heal well Surrounded by perichondrium (source of blood vessels supplying nutrients via diffusion) 3. What are the functions of skeletal cartilage? Function is to support and protect, cushioning shock b/w bones and connecting tissues together As you age, you can develop scarring over cartilage, which could cause pain. 4. Describe the two types of cartilage growth. Hyaline cartilage growth: Appositional growth: take the existing surface (outer surface) and it grows, to widen bones from a child to an adult. Interstitial growth: chondrocytes divide and use chondroblast to make new tissue within the tissue. Cartilage plate will actually get longer and bigger. CARTILAGE MAKES YOUR BONE GROW 5. What are the functions of the skeletal system? Bone tissue is dynamic tissue b/c it is continuasly remodeling itself (growing, breaking down, ITS ALIVE) Have to have both calcium and phosphate to make bones!!! Individual bones are made up of bone tissue, marrow, cartilage, & periosteum. BONES ARE ORGANS! Skeletal system: Supports, Protection, Movement, Blood formation (Makes red blood cells), Mineral resevoir (holds minerals, pH balance, & detoxification (You have to have calcium in the blood in order for muscles to contract!)
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6. What is meant by “bone tissue is dynamic”? Bone tissue is dynamic tissue b/c it is consistently changing or remodeling itself (growing, breaking down, ITS ALIVE) 7. Describe each of the four bone types based on shape, where is each found? Long: Femur, Ulna, Radius, Phalanges Short: Talus, Carpal bone, Tarsals Flat: Sternum, Scapula, Bones of the skull Irregular: In the spine (vertebrae) 8. Describe the structure of flat bone. Thick compact layer on the outside, spongy bone in the middle, but NO marrow cavity RIBS ARE FLAT BONES! (NO MARROW CAVITY) We have external and internal surface of compact bone. Middle layer is called the diploe and is spongy bone, it has trabeculae (very good at strengthening) Inner layer is protected by the spongy bone and trabeculae and outer layer.
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