Explain the relationship between sunlight exposure and vitamin D3

What will be an ideal response?


In the presence of UV radiation in sunlight, epidermal cells in the stratum spinosum and stratum basale convert a cholesterol-related steroid into cholecalciferol, also known as vitamin D3.

Anatomy & Physiology

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Amino acids are building blocks of ________.

What will be an ideal response?

Anatomy & Physiology

Specialized macrophages called __________ cells are found in the epidermis and mucous membranes.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

Blood is exchanged between the mother and fetus across the placenta

Indicate whether the statement is true or false

Anatomy & Physiology

Which of the following is INCORRECTLY matched with its secreting organ?

A) TRH — hypothalamus B) TSH — posterior pituitary C) triiodothyronine — thyroid gland D) thyroxine — thyroid gland

Anatomy & Physiology