Answer:
option D: produced its own contractile cycle
Explanation:
option D: produced its own contractile cycle
Autorhythmicity referred to that capability of cells of cardiac muscles that help to beat heart regularly and rhythmically. It is due to that potential which is produced by cells of cardiac muscles. these cells does not required stimulation to beat heart.
autorhythmic cells are generate at sinoatrial and atrioventricular nodes.
Venetian explorer, Marco Polo, told his cellmate during his imprisonment after the Venetian-Genoese War about his travels to the Far East. These accounts became a book , later entitled "The Travels of Marco Polo" which was influential in sparking people's curiosity of the East.
The first impact was that Marco Polo was able to bring elements of Western culture to the East and Eastern culture back to the West. Because of his exploration Indonesia, Mongolia, Sri Lanka, and India, China began to experience Western culture.
Next, Marco Polo's interactions with Mongolian emperor Kublai Khan led to commercial exchange with Western merchants who were now arriving in China. This increased Chinese's growth as a civilization.
The Silk Road, an easier route to travel around the Gobi Desert, traced by the Polos had a huge effect in the future of European and Chinese interaction. It would prove to be a more effective route than to sail the oceans to China.
The Vietnam War was a violent battle that lasted for many years and had the controversial participation of the USA. In this conflict, the USA used state-of-the-art equipment and has more weapons to use and guarantee victory in the war. However, the Vietnamese army, even at a disadvantage in terms of armaments and technology, came out victorious because they had the advantage of the region's climate and topography.
Vietnam had a topography with little linearity and extensive vegetation, which allowed the Vietnamese to use their knowledge about the place and hide various traps that were not located by American equipment and caused American soldiers to be captured.
When it comes to emotionally charged memories, the amygdala is crucial to memory formation.
Because the amygdala is connected to and located close to the hippocampus, a brain structure involved in memory, the two frequently work together to improve memory recall. The thalamus serves a variety of purposes, but it is widely thought that it serves as a hub and information relay between several subcortical regions and the cerebral cortex. The thalamic nucleus, which is present in each sensory system, receives sensory impulses and sends them to the corresponding main cortical region. The amygdala is interconnected with many other brain areas, allowing it to communicate with areas that process "higher" cognitive information and systems that control "lower" processes (including fear, anger, and fear-related behaviors)
Learn more about amygdala here:
brainly.com/question/28206728
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