Answer:
"heart attacks are most often caused by a sudden drop in blood pressure."
In 1962 Sir McFarland Burnett stated, ‘By the end of the Second World War it was possible to say that almost all of the major practical problems of dealing with infectious disease had been solved.’ At that time, his statement was logical. Control and prevention measures had decreased the incidence of many infectious diseases, and with the ability to continue to identify new antibiotics, to handle new problems, and the ongoing development of appropriate vaccines, his statement appeared to be appropriate.
In the US, similar feelings were expressed and funding for infectious disease fellowships began to decline with federal resources being directed elsewhere.
The history of the world is intertwined with the impact that infectious diseases have had on populations. Evidence of smallpox has been found in 3000-year-old Egyptian mummies. Egyptian papyrus paintings depict infectious diseases such as poliomyelitis. Hippocrates wrote about the spread of disease by means of airs, water, and places, and made an association between climate, diet, and living conditions. Investigators described miasmas as the source of infections. Fracastoro discussed the germ theory in the 1500s and three routes of contagion were proposed—direct contact, fomites, and contagion from a distance (airborne). Epidemics of leprosy, plague, syphilis, smallpox, cholera, yellow fever, typhoid fever, and other infectious diseases were the norm.
The development of the microscope by Leeuwenhoek in the 1600s allowed scientists to visualize micro-organisms for the first time. The 1800s brought knowledge of the cultivation and identification of micro-organisms. Vaccines were developed and used which introduced specific methods to our storehouse of measures for control and prevention. Pasteurization was another important contribution to disease control. An appreciation of the environment and its relationship to infectious diseases resulted in implementation of broad control measures such as community sanitation, personal hygiene, and public health education. The importance of nutrition was appreciated for its impact on infectious diseases.
Answer:Neurons, or nerve cells that carry nerve impulses, are made up of the cell body, the axon, and several dendrites. Signals move across the synapse, the place where the axon of one neuron meets the dendrite of another, using chemicals called neurotransmitters
Explanation:
Progressive overload is defined as the gradual increase in the number of repetitions in the training routine, weight, or frequency.
The correct statement for the blank is:
If you can complete more than 20 repetitions over three sets with your current weight, you should<u> </u><u>increase </u><u>the </u><u>weight </u><u>until no more than 20 </u><u>repetitions </u><u>and</u><u> three sets </u><u>are possible.</u>
The progressive overload can be explained as:
1. The human body in the training routine should gradually increase the intensity, frequency, or repetitions to challenge the muscular tissues of the body.
2. The muscle tissues adapt to more load if the weight is increased gradually. If someone can complete 3 sets with 20 reps, then the person should increase the weight until the individual reaches 20 reps in 3 sets.
Therefore, the correct answer is Option A.
To know more about progressive overload, refer to the following link:
brainly.com/question/8863369
