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Developmental Aspects of Skin and Body Membranes

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Presentation on theme: "Developmental Aspects of Skin and Body Membranes"— Presentation transcript:

1 Developmental Aspects of Skin and Body Membranes
Essentials of Anatomy & Physiology – 6th Edition Page

2 Lanugo 5th – 6th month of fetal development Downy type of hair
Shed by birth

3

4 vernix caseosa Covers baby’s skin when born
White, cheesy-looking substance Produced by sebaceous glands Protects baby’s skin while in the womb

5 http://www. pregnancy. org/images/pregnancy/pregnancycalendar/mo6500

6 Milia Small white spots on nose and forehead
Accumulations in sebaceous glands

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8 During old age… Subcutaneous tissues decreases
Decrease tolerance for cold bruising Decreased oil production Dry skin Decreased collagen fibers Sagging skin Thinning skin

9 During old age… Hair loses luster Decrease number of follicles
Alopecia (baldness) Tiny and colorless hair (vellus hair) Graying hair Melanin deposits on hair decreases

10 Premature Hair Loss Anxiety Protein-deficient diets Chemotherapy
Excessive vitamin A Fungal disease such as “ringworm”


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