MICROANATOMY

EPITHELIUM CONNECTIVE TISSUE SKIN

INTEGUMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The skin has the ability to synthesize which of the following vitamins?
A
Vitamin C
B
Vitamin B12
C
Vitamin D
D
Vitamin C
Explanation: 

Detailed explanation-1: -The skin is responsible for producing vitamin D. During exposure to sunlight, ultraviolet radiation penetrates into the epidermis and photolyzes provitamin D3 to previtamin D3.

Detailed explanation-2: -Vitamin D3 is synthesized in human skin from 7-dehydrocholesterol following exposure to ultraviolet B (UVB) radiation with wavelength 290 to 320 nm.

Detailed explanation-3: -Vitamin D Production D3 (cholecalciferol) is produced from 7-dehydrocholesterol (7-DHC) through a two-step process in which the B ring is broken by UV light (spectrum 280–320 UVB) radiation from the sun, forming pre-D3 that isomerizes to D3 in a thermo-sensitive but noncatalytic process.

There is 1 question to complete.