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umka2103 [35]
3 years ago
14

A sperm cell and an egg cell fuse to form which structure

Biology
1 answer:
Svetlanka [38]3 years ago
6 0
A sperm cell and an egg cell fuse to form a zygote.
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The muscles that contract (during cold or fright), the slanted hair follicle is pulled upright, dimpling the skin surface with goosebumps are called arrector pili muscle.

The arrector pili muscle are tiny muscle that attaches to the base of the hair follicle at one end  and to the dermal tissue on the other end. When the body feels cold or fright the body generate heat and the arrector pili muscle contract all at once, that causes goosebumps on the skin.

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