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daser333 [38]
2 years ago
7

Vaccinations were first used in what time period?

Health
2 answers:
Gala2k [10]2 years ago
7 0
<span>Vaccinations were first used in what time period?
<span>Edward Jenner's first smallpox vaccination in 1796</span></span>
laila [671]2 years ago
4 0
Vaccinations were first used in the year 1796.
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Explain the process of addiction as it is related to the brain (use the terms: reward pathway, tolerance, dopamine)
eduard

Answer:

The human brain is the most complex organ in the body. This three-pound mass of gray and white matter sits at the center of all human activity—you need it to drive a car, to enjoy a meal, to breathe, to create an artistic masterpiece, and to enjoy everyday activities. The brain regulates your body's basic functions, enables you to interpret and respond to everything you experience, and shapes your behavior. In short, your brain is you—everything you think and feel, and who you are.

Explanation:

How does the brain work?

The brain is often likened to an incredibly complex and intricate computer. Instead of electrical circuits on the silicon chips that control our electronic devices, the brain consists of billions of cells, called neurons, which are organized into circuits and networks. Each neuron acts as a switch controlling the flow of information. If a neuron receives enough signals from other neurons that it is connected to, it fires, sending its own signal on to other neurons in the circuit.

The brain is made up of many parts with interconnected circuits that all work together as a team. Different brain circuits are responsible for coordinating and performing specific functions. Networks of neurons send signals back and forth to each other and among different parts of the brain, the spinal cord, and nerves in the rest of the body (the peripheral nervous system).

How do drugs work in the brain?

Image showing a neuron. The neurotransmitter and receptor are called out to show how signals are sent, received and processed through the neuron.

Drugs interfere with the way neurons send, receive, and process signals via neurotransmitters. Some drugs, such as marijuana and heroin, can activate neurons because their chemical structure mimics that of a natural neurotransmitter in the body. This allows the drugs to attach onto and activate the neurons. Although these drugs mimic the brain’s own chemicals, they don’t activate neurons in the same way as a natural neurotransmitter, and they lead to abnormal messages being sent through the network.

Other drugs, such as amphetamine or cocaine, can cause the neurons to release abnormally large amounts of natural neurotransmitters or prevent the normal recycling of these brain chemicals by interfering with transporters. This too amplifies or disrupts the normal communication between neurons.

What parts of the brain are affected by drug use?

Drugs can alter important brain areas that are necessary for life-sustaining functions and can drive the compulsive drug use that marks addiction. Brain areas affected by drug use include:

6 0
2 years ago
What type of media messages might be found at sporting events? How might they influence your health? Justify your response using
zalisa [80]
Media messages found at sporting events such as basketball and football advertise sprite, sprite is a soda that does taste well but drinking too much has a bad influence on your health. Drinking too much soda can make you constipated, unhealthy, and even sick, nothing is wrong with soda at all, its just how we use it, and not abuse it.
7 0
3 years ago
Calculate the maximum mass of potassium sulfate K2SO4, that could be formed 4.9 g of sulfuric acid reacts with excess potassium
ahrayia [7]

we can't really see your question

3 0
3 years ago
If your heart rate decreased gradually over a long period of time, what could that indicate
inessss [21]

Answer:

A slow heart rate might occur because the sinus node:

Explanation:

4 0
3 years ago
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the speaker believes the ability to learn is not fixed and can change with your effort. Explain why you agree or disagree with h
romanna [79]

I agree with the speaker that the ability to learn is not fixed and can change with your effort because the more you persevere to know, the more knowledge you will gain and acquire. Moreover, the more we sharpen our brain, it will get more information that we need and we can use it in our way of life especially in our decision-making.

3 0
3 years ago
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