Body structure & physiology of skin & lair

 Anatomy  physiology of skin  lair Essay

ANATOMY & PHYSIOLOGY OF SKIN AND HAIR

1 ) Draw and label a diagram in the Epidermis.

2 . Draw and label a diagram of the dermal and subcutaneous part Of the pores and skin

Please make sure that you just include all the stuff from the stand below.

three or more. Fill in the next table:

STRUCTUREPOSITIONFUNCTION

Papillary layerUpper layer of dermisProvides nutrients for the living skin cells of epidermis Reticular layerSecond layer of dermisCollagen, stretchy & reticular fibbers offers skin strength elasticity and support which in turn all aid to maintain skin's tone.

Subcutaneous layerSituated under the dermis, contains Adipose tissue(fat) and areola tissueAdipose tissue protects against injury and insulates keeping body warm. Areola tissue elastic fibbers producing layer good and flexible Eccrine glandsCoiled tube glands open up directly upon skins surfaceRegulate body temperature, help eliminate waste Apocrine glandsConnected to hair follicles, only present in genital and underarm regionsProduce a fatty secretion. Malfunction of secretion by bacterias and brings about body odour Hair folliclesSac or sheath of skin cells and connective tissues, surrounds root of hairHolds frizzy hair in place and enclose the head of hair shaft, supplies hair with vital nutrition – is made up of dermal papas which supplies blood vessels to curly hair Sebaceous glandsSmall sac-like pouchesProduce an greasy substance known as Sebum (contains fat, cholesterol and cellular debris) layers surface of skin and hair the whole length preventing excessive water damage

Arrector piliSmooth muscle of sensory fibbers attached at perspective to foundation of hair follicleMakes curly hair stand build in response to cold or perhaps experiencing emotions as terror and panic Blood vesselsRuns through skin tone and subcutaneous layersBrings nutrition and fresh air to germinating cells in the epidermis and remove waste products. Sensory neurological endingAll above body more on finger tips and lipsStimuli sends text messages through physical nerves to brain – aware of pain, touch, heat and cold Motor neural endingdermisTransmit urges to the effector organs: muscles and glands. CapillariesThroughout dermis and subcutaneous layerThe site of where exchange of substances between bloodstream and body tissues come about

4. List and go over the functions of the skin area

Sensation: contains sensory nerve endings which usually send text messages to the mind. A neurological respond to touch, pressure, soreness, and frosty, hot and allows us to identify things from their shape and feel. Heat regulation: adjusts body temperature by simply –

•Losing too much high temperature the blood capillaries near cases surface deal, keeping nice blood away from skins surface area and closer to major organs. •When person is too warn blood capillaries dilate enabling warm blood vessels to circulation near skins surface to cool the body. •Evaporation of sweat by skins surface also help in the air conditioning of the body system. •Arector pili muscles raise hairs and trap air next to the skin when heat is required to be maintained. •Adipose muscle of the dermis and subcutaneous layers support insulate physique against high temperature loss. Absorption: skin is usually waterproof and has limited absorption houses. However chemicals which the epidermis can absorb include body fat soluble substances such as o2, carbon dioxide, excess fat soluble vitamins, steroids, along with small amounts of water. Protection: provides a protective appendage –

•Fat cells of the subcutaneous layer protect bone tissues and significant organs coming from injury. •Melanin – manufactured in basal coating, helps protect the body from harmful effects of ultra violet radiation. •Cells situated in the Horny layer overlap like scales stop micro-organisms going through the skin preventing excessive water loss via body. •A film of sebum and sweat around the skins surface area (acid mantle) acts as a great anti-bacterial agent helping to prevent the multiplication of micro-organisms on the skin. Removal: eccrine glands produce sweating this helps to...

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