As he slowly gets up to investigate, his heart begins to race, his mouth is dry, and he begins to sweat; his<u> "sympathetic nervous system" </u>has been activated.
The sympathetic nervous system (SNS) is a piece of the autonomic nervous system (ANS), which likewise incorporates the parasympathetic nervous system (PNS).
The sympathetic nervous system ordinarily capacities to create restricted alterations, (for example, perspiring as a reaction to an expansion in temperature) and reflex modifications of the cardiovascular framework. Under states of pressure, be that as it may, the whole thoughtful sensory system is enacted, delivering a prompt, boundless reaction called the fight or-flight reaction.
Answer:
Elias Howe Jr. was an American inventor best known for his creation of the modern lockstitch sewing machine. This invetion was in 1846. The very first lockstitch sewing machine in the world. His invention helped the mass production of sewing machines and clothing. That in turn revolutionized the sewing industry and freed women from some of the drudgery of daily life at the time. Contrary to popular belief, Howe was not the first to conceive of the idea of a sewing machine. Many other people formulated the idea of such a machine before him, one as early as 1790, and some had even patented their designs and produced working machines, in one case, at least 80 of them.
It was Howe, however, who came up with significant refinements to the design concepts of his predecessors, and on September 10, 1846, he was awarded the first U.S. Patent (4,750) for a sewing machine using a lockstitch design. His machine contained the three essential features common in most modern machines: a needle with the eye at the point; a shuttle operating beneath the cloth to form the lock stitch; and an automatic feed.
Howe's design demonstrated the novel idea of a needle that carried the thread forward, through a piece of material, where another thread, held in a metal shuttle, passed through a loop in the middle thread (caused by the needle moving forward then suddenly backward). The needle was then retracted and this action pulled the two threads to lock them in the fabric. This is how the lockstitch was born.
The sewing machine is easier to use and also you can repair worn, torn or unused clothes by yourself. You can re-design your old clothing. You can even become a fashion trend-setter by making clothes in your own style. Having a sewing machine will save you from going to a tailor, thus helping you to save money.
hope this helps!! :)
The correct answer is letter C
For observational learning to have positive results, use people with the same interests, who use the same language and experiment. If you, the educator, manage to identify groups in the classroom, manage to form groups and stimulate students learned among themselves, through observation during the exhibitions on themes and contents.
<u>To apply the technique, there are 4 fundamental steps:
</u>
-
Acquisition: The observer recognizes, when observing the model, as distinctive characteristics of his conduct;
-
Retention: What was observed is stored in memory;
-
Performance: if the observer approves the model's behavior and accepts it as consequences, he or she will reproduce it.
-
Consequences: When performing an imitated action, or the observer receives as a consequence of the action, it can be a reducing or weakening, that is, through the consequences it is possible to analyze whether an action is viable.