Answer:
When a person engages in physical activity, he undergoes aerobic situations where the heart muscle is optimally strained and improves its muscle strata.
There are scientific studies that compare the muscular walls of athletes and sedentary people, the walls of athletes are thicker and have more power when it comes to pumping and ejecting blood, that is, they make fewer contractions of the heart muscle but more effectively due to They eject more blood, while in unhealthy or sedentary people their muscles are weak, and they pump less blood into the torrent for each contraction, so they need to compensate for non-ejected blood volume by contracting more times and therefore increasing the heart rate.
Thus, physical activity generates a more effective contraction, which is why the heart rate of athletes is lower.
In the case of blood pressure, blood pressure is lower and there are no atheroma plaques or fatty tissue accumulation as in the case of sedentary patients.
Venous return in athletes is aided by contraction of the skeletal muscles of the lower limb, so cardiac filling is better and the heart has less energy demand (this does not happen with sedentary).
Explanation:
In summary, the heart rate is decreased by the great contractile power of each cardiac pump, the blood pressure is decreased by the low cardiac demand and by the good blood circulation, the venous return is favored by the contraction of the skeletal muscles of the Lower limb and myocardial walls are much thicker or hypertrophic due to good oxygenation and sports activation during physical activity.
According to the research, the correct option is Period of invasion. The stage of an infectious disease when specific signs and symptoms are seen and the pathogen is at peak activity is the Period of invasion.
<h3>What is an infectious disease?</h3>
It is the disease that is due to the invasion of the body by pathogenic germs, which establish and multiply caused by a local cell injury, secretion of toxins or by the antigen-antibody reaction.
The stage of an infectious disease called the Period of invasion is the time interval between invasion by an infectious agent and the appearance of the first signs and symptoms of the disease.
Therefore, we can conclude that according to the research, the correct option is Period of invasion. The stage of an infectious disease when specific signs and symptoms are seen and the pathogen is at peak activity is the Period of invasion.
Learn more about stages of an infectious disease here: brainly.com/question/14454614
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Answer:reduce the binding of acetylcholine to its receptors on the postsynpatic membrane
Answer: False
Explanation:
A hormone can have multiple function based on the cell on which it is received which means that it depends on the receptor on which the hormone is received.
A single hormone has more than one specific function as it depends on receptors because one hormone can have multiple receptors.
The same can be coupled to different intracellular pathway in the different cell types.
hence, the given statement is False, a single hormone carries out different function.
Answer: Firstly put your finger under some cold water and light dry it with a towel. If you have aloe Vera that would be great but don’t use lotion or any other face cream/body cream because it will irritate the burn and eventually your finger. Lastly keep your finger away from anything that can harm it such as paper, once the aloe Vera dries apply more until you feel comfortable to put a band aid on your finger
Hopefully your finger gets better fast :)
