Exposure to optimum amounts of sunlight is necessary for proper bone maintenance and growth in If a child lives in an area where exposure to sunlight is rare because of pollution or overcast skies, what can be done to minimize impaired bone maintenance and growth?

your 70-year-old uncle, mike, says, "i don't know what's happening to me, i used to be 5 feet 10 inches, now i'm only 5 feet 8 inches" explain to your uncle why he's becoming shorter

ne definitións below with the correct term: rickets A. peptide that promotes cell division in basal cells and accelerate production of keratin to stimulate epidermal development or repair В. vitiligo C. albinism skin pigmentation condition with normal distribution of melanocytes, but absence of melanin * production D. melanoma condition where legs are curved due to lack of vitamin D3 epidermal growth fa E. more severe form of skin cancer and can metastasize quickly carotene F. skin pigmentation condition as a result of sustained reduction in oxygen level G. yanosis

Cells1.  Which embryonic cells differentiate into bone tissue? [Reminder: embryonic ___________________ will differentiate and form all of our different types of ______________________ tissue].

24-year-old delivery driver is involved in an accident and sustains a wide abrasion over his left elbow The abrasion results in the total loss of epidermis over a large area of his left arm, but one month later, the abrasion has healed, with regrowth of the epidermis. Which of the following mechanisms accounts for the restoration of the epidermis over the abraded area? A. Growth of epidermis from hair follicles and sweat glands in the dermis B. Migration of endothelial cells from newly grown capillaries C. Transformation of dermal fibroblasts into epidermal cells D. Transformation of macrophages into epidermal cells E. Transformation of melanocytes into epidermal cells

Describe the relationship between melanin and UV light exposure in the human population. Include a description of both the effects of UV light on a person and function of melanin.

How does melanin get into the skin?     melanocytes are found in the most superficial layer of skin and are full of melanin giving pigmentation     keratinocytes absorb surrounding melanocytes as they rise up from the basal layer to the surface     melanocytes form in the basal membrane and as they ascend to the surface they change into keratinocytes while maintaining the original amount of melanin they produced     melanocytes in the basal layer produce melanin and inject it into surrounding keratinocytes via the dendrites

Briefly describe how changes in skin color may be used as clinical signs of certain disease states.

An individual fractures the right femur. The doctor instructs the individual to use crutches for 7 weeks and to avoid placing any weight on the fractured right femur.  How would bone cell activity in the opposite leg change over the 7 week periord? Be sure to include at least 2 different bone cells in your explanation.

When the skin is exposed to sunlight it will produce: Calcium Vitamin D Vitamin C Vitamin D precursors