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41 Cards in this Set
- Front
- Back
Histology and physiology |
The study of the anatomy layers and functions of the skin. Physiology and histology involve the study of the structure and composition of the skin tissue |
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Skin |
The largest organ in the body |
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Proteins |
The basic material and building blocks for body tissues |
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Amino acid |
Building blocks of proteins amino acid form peptide and peptide form proteins |
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Appendages of the skin |
Hair, nails, sweat glands, and oil glands |
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Healthy skin |
Slightly moist, soft, smooth and somewhat acidic |
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skin six primary function |
Sensation, protection, heat regulation, excretion, and absorption |
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Sensation |
Sensations Felt on our skin cause us to feel, react, or more |
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Protection |
The skin is a thin, yet strong, protective barrier to outside element and micro organism sebum on the epidermis gives protection from external factors |
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Acid mantle |
The protective barrier made up of sebum, Lipids, sweat, and water. They form a hydrolipidic Film to protect skin from drying and from exposure to external factors. |
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Acid mantle |
ph 5.5 |
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Barrier function |
Skins mechanism that protects us from irritation and intercellular transpidermal eater loss |
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Trnsepidermal water loss |
The water loss caused by evaporation on the skins surface |
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Intercellular matrix |
Fluid between epidermal cells |
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Melanocytes |
Cells that produce pigment and protect our bodies from harmful ionizing UV rays. They produce pigment granules called melanosomes. |
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Melanosomes |
Produce protein called melanin. |
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Heat regulation |
Body normal temp is 98.6. |
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Sudoriferous glands |
Serve to prevent the Body from overheating |
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Secretion |
Sebum is an oily substance that protects the surface of the skin and lubricates both the skin and hair. |
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Sebaceous glands |
Appendages attaches to follicles that produce sebum. These oils keep skin soft and protect from outside elements |
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Skin |
50-70 percent water |
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Skin |
50-70 percent water |
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Absorption |
Skin absorbs topical products serum screams through cells hair follicles and sebaceous glands. |
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Skins main components |
Hypodermis( subcutaneous) dermis, epidermis |
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Subcutaneous layer |
Composed of loose conectivo tissue. Layer is 80% fat. Protective cushion gm gives contour and smoothness to body. A source of energy |
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Dermis |
Support layer of connective tissues above hypodermis. 25 times thicker than epidermis consists of two layers. Reticular layer and papillary layer. |
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Dermis |
Support layer of connective tissues above hypodermis. 25 times thicker than epidermis consists of two layers. Reticular layer and papillary layer. |
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Dermis |
Connective tissue made of collagen protein and elastin fibers. Supplies skin with oxygen through blood vessels and lymphatic channels. |
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Reticular layer |
Fender deeper layer of dermis. Mainly collagen and elastin |
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Papillary layer |
Connects dermis to epidermis |
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Collagen |
Gives skin strength necessary for wound healing. Produced by fibroblasts. 70% of dermis |
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Glycosaminoglycans |
Large protein molecules found between fibers and dermis. Protein and sugar complexes |
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Lymph vessels |
Remove waste product , bacteria and excess fluid |
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Epidermis |
Outermost layer of the skin |
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Epidemris |
Composed of 5 layers Stratum germinativum Stratum spinous Stratum granulosum Stratum lucidum Stratum corneum |
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Jeratinocytes |
Comprise 95% of the epidermis Contain proteins and lipids |
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Keratin |
Protein provides resiliency and protection. Hard keratin is found In hair and nails |
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Motor efferent nerve fibers |
Wednesday impulses from the brain or spinal cord to the muscles or glands |
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Sensory or afferant |
Nerve fiber send messages to the central nervous system and brain to react to heat cold pain pressure and touch |
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Apocrine glands |
Have odor Due to interactions are bacteria and secretion on the surface of the skin |
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Eccrine glands |
Found all over the body have no odor on four head palms of the hands and soles of the feet |