1.) The two major parts of the nervous system are the central and peripheral
2.) The two major parts of the central nervous system are the brain and spinal cord.
3.) The answer is B because the cerebellum helps you stand and keep your balance.
4.) The answer is D because the cranium(skull) protects all parts
5.) The answer is B because the Synapse pass an electrical or chemical signal to another cell. 6.) The answer is c because it receive the messages
8.) The answer is c because it involves IQ testing
9.) The answer is B because it uses narrow tubes and series of X-ray.
11.) Hormonal changes are at work, too. The adolescent brain pours out adrenal stress hormones, sex hormones, and growth hormone, which in turn influence brain development. The production of testosterone increases 10 times in adolescent boys. Sex hormones act in the limbic system and in the raphe nucleus, source of the neurotransmitter serotonin, which is important for the regulation of arousal and mood. The hormonally regulated 24-hour clocks change their settings during adolescence, keeping high school and college students awake far into the night and making it difficult to rise for morning classes.
12.) The stress onset may have caused cortisol levels to rise, suppressing the immune system. In its weakened state, it may have been exposed to a variety of pathogens, which were then able to enter and proliferate within the body. Although this pathogen may have been present, in the immune system was also constantly being signaled by cortisol to suppress inflammation, and the combination of pathogens living in the body along with absence of the anti-inflammatory signal may together have caused someone to get sick from stressing to experience symptoms of the inflammatory.
13.) Some behavior we might inherit from I parents are like your attitudes, some of your talents, and sometimes your personality.
14.) The environment has a powerful influence on subsequent behavior. We can either avoid an environment entirely or change parts of it .So that it is less likely to produce the unwanted behavior. Examples: if
A group of friends…