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NeX [460]
3 years ago
5

Teddy is afraid of needles and injections. whenever the nurse attempts to give him an injection, he screams and flails his arms

and legs wildly. his heart rate increases, and he begins to sweat profusely, which indicates activation of the
Biology
2 answers:
iren2701 [21]3 years ago
6 0
Answer:  "sympathetic nervous system" .
__________________________________________
jeka943 years ago
3 0

Answer:

sympathetic nervous system

Explanation:

The sympathetic nervous system is responsible for changes in the body in stress or emergency situations. This leaves the individual on alert, ready for fight and flight reactions.

Since Teddy is terrified of needles, taking a shot is a very stressful time for him, so when he finds himself facing a needle in the syringe, his sympathetic nervous system is activated and his body goes into a fight and flight state, so , he begins to have reactions such as shouting and shaking his arms and legs wildly. In addition his heart rate increases and he begins to sweat profusely.

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Answer:

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Explanation:

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Consider the evidence that explains how physical separation of two populations of a species can cause speciation. What effect do
Tom [10]

Answer:

  • Interruption in the genetic flow between separated groups
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Explanation:

Allopatric speciation consists of the geographic separation of a continuous genetic background that can give place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flux, as the two new groups that are separated can not get together and mate anymore. These barriers might be geographical or ecological.

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