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.
The arrector pili muscle acts as the thermoregulator. Straight stand hair increases air trapping, so that the heat loss from the body decreases. The arrector pili muscle are mediated by the sympathetic nervous system.
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Answer:
<em>The statement that is incorrect is :</em>
<em>Robert wanted to see if his theory was true that cigarette smoke will influence web-building in spiders.</em>
Explanation:
A theory can be described as a descriptive explanation of a phenomenon which is supported by valid experiments and careful examination of facts. As Robert, has not conducted any experiments nor has proved his study with reference to facts, hence it cannot be considered as a theory.
Robert wanted to see if his observation was true that cigarette smoke will influence web-building in spiders will be the correct statement that could be used.
Answer:
I think it is A Parasitic one
Explanation:
Explanation:
Science is the systematic and methodical way of thinking about our natural world.
- The bedrock of engineering is science.
- Engineering is simply the application of scientific principles.
- We can picture engineering as a practical science.
- All technologies innovated by engineers are based on simple scientific deductions.
- A good background of the science makes engineering easy to conceptualize.
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Drugs hit the same part of the brain that releases dopamine which makes you happy. Other things that by this part of the brain are good and sex. This part of the brain is called the "reward" circuit , which is part of the limbic system.
