plz answer this question!!!!!!!!!!!!!! 1st and 3rd
Answers
Answer:
1) Answer
A friction ridge is a raised portion of the epidermis on the palmar (palm and fingers) or plantar (sole and toes) skin, consisting of one or more connected ridge units of friction ridge skin. These ridges are sometimes known as "dermal ridges" or "dermal papillae"
2) Answer
Old people complain about stiff joints, because of their less strength, loss of CaPO4(calcium phosphate) which make their bones weak. Mostly the critical joints have some of the lubricants which make them to loose the joint pain and mostly due to the reduction of this lubricant they may feel pain.
Answer:
1. The skin of our finger shrink when you wash clothes for a long time due to the process of exosmosis. This process takes place in the presence of hypertonic and hypotonic solution. First let us know about these solutions.
2. Old people complain about stiff joints, because of their less strength, loss of CaPO4(calcium phosphate) which make their bones weak. Mostly the critical joints have some of the lubricants which make them to loose the joint pain and mostly due to the reduction of this lubricant they may feel pain.
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