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Developmental Aspects of Skin and Body Membranes

Developmental Aspects of Skin and Body Membranes. Early Life. Lanugo. During the fifth and sixth months of fetal development, the soon-to-be-born infant is covered with a downy type of hair called lanugo. Vernix Caseosa.

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Developmental Aspects of Skin and Body Membranes

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  1. Developmental Aspects of Skin and Body Membranes

  2. Early Life

  3. Lanugo • During the fifth and sixth months of fetal development, the soon-to-be-born infant is covered with a downy type of hair called lanugo

  4. Vernix Caseosa • When the baby is born, its skin is covered with a white cheesy-looking substance, produced by the sebaceous glands • It protects the baby’s skin while it is floating in its water-filled sac inside the mother

  5. Milia • The newborn’s skin is very thin and blood vessels can be easily seen through it • Commonly there are accumulations in the sebaceous glands, which appear as small white spot on the baby’s nose and forehead • Normally disappear by the third week after birth • As the baby grows its skin becomes thicker and moist as more fat is deposited under the skin

  6. Adolescence

  7. Acne • Develops primarily during adolescence • The skin and hair become more oily as sebaceous glands are activated • Resides into early adulthood • Skin reaches optimal in 20’s and 30’s

  8. Dermatitis • Dermatitis(skin inflammation) can be caused by abrasion, chemicals, wind, sun, pollutants, and bacteria • Dermatitis can result in pimples, scales, and inflammation

  9. Later Years

  10. Ageing • Subcutaneous tissue decreases leading to intolerance of the cold • Skin becomes drier because of decreased oil production and declining numbers of collagen fibers • As a result can become itchy and bothersome • Thin of the skin occurs • Becomes more susceptible to bruising and other type of injuries • Decreasing elasticity of the skin, along with the loss of subcutaneous fat, allows bags to form under our eyes, and our jowls begin to sag • Loss of elasticity is speeded up by smoking and by sunlight • Good nutrition, plenty of fluids, and cleanliness help delay the ageing process

  11. Hairs loses luster as we age • By 50 hair follicle have dropped by one-third and continue to decline • Result in hair thinning and some degree of baldness, alopecia in most people • Male pattern baldness is inherited from mother • hair follicles have begun to degenerate • Gray hair • Stress, nutrition, genetically related

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