In order to warm the body up when cold

In order to warm the body up when cold: vitamin D is synthesized sudoriferous glands release sweat sebaceous glands release oil the arrector pili muscles contract to stand hairs upright melanin is produced. Which moist epithelial membrane lines body cavities that open to the exterior: synovial cutaneous mucous serous peritoneum Serous fluid reduces friction: in movable joints such as the knee between organs and the cavities in which they reside inside the lungs as food is chewed around the brain In order to warm the body up when cold: vitamin D is synthesized sudoriferous glands release sweat sebaceous glands release oil the arrector pili muscles contract to stand hairs upright melanin is produced. Which moist epithelial membrane lines body cavities that open to the exterior: synovial cutaneous mucous serous peritoneum Serous fluid reduces friction: in movable joints such as the knee between organs and the cavities in which they reside inside the lungs as food is chewed around the brain

1. Arrector pilli muscles are any of the muscles attached to the
hair follicles in mammals. These muscles contract causing the hairs
on the skin to stand up right as a machanism for
theromregulation.
Hence the correct option would be: the arrector pilli
muscles contract to stand hairs upright.
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2. Serous membranes contain the epithelial cell lining the body
cavities that do not open to the exterior. Pleural, pericardial and
peritoneal membranes are serous membranes. Cutaneous membrane is
commonly called the skin.
Mucous membrane covers the body cavities and opens uo to the
exterior. Synovial membranes line the bones in the movable
joints.
The correct answer would be mucous.
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3. The visceral serous membrane lines the organs and the
parietal serous membrane lines the cavities. Serous fluid is
present between these two membranes and and prevents friction
between organs and the cavities in which they reside.
So the correct option would be between organs and the
cavities in which they reside.

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