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18 Cards in this Set
- Front
- Back
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_______ is the largest organ in the body
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Skin
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List the 3 layers of skin
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1. Epidermis
2. Dermis 3. Hypodermis |
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What are the functions of skin ?
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* a barrier
* sensory functions * thermoregulation * vitamin D Synthesis * absorption |
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list skin appendages
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Hair
Glands Nail |
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The epidermis is a 1.___ ____ ___ ___ consisting of four distinct 2. ___ types and 3. ___ distinct layers.
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1. keratinized stratified squamous epithelium
2. cell 3. 5 |
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The epidermis is ______ and depends on ______ of nutrients from below
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non-vascular
diffusion |
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All bones are made up of______and______ bone tissues.
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compact and spongy
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Bones tissues are amde of a hard__________, with cells scattered around.
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calcified matrix
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Constant remodeling of bone structure is necessary to...
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repair micro-fractures due to stress
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Osteocytes...
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make the majority of the bone cells and do not secrete bone matrix
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the destruction of bone matrix is celled...
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bone resorption
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Organic and mineral mix
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bone matrix
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Secretes collagen fibers
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osteoblasts
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The job of the osteoblasts is to pump______and______ions into the matrix space and pump____out of the matrix spce.
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calcium, phophate, H+
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Secretes H+ into the matrix environment creating an acidic mediumof pH 4
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osteoclasts
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Osteoclasts also secrete________to dissolve collagen
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acid phosphate
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Can increase the recruitment and the activity of asteoblasts and osteoclasts
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parathyroid hormone (PTH)
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Tends to increase the recruitment of osteoclasts, and also plas a part in the mineralization of bone matrix
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Vitamin D
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