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wariber [46]
3 years ago
6

Portion sizes today are generally much smaller than they were 20 years ago.

Health
2 answers:
Stolb23 [73]3 years ago
8 0

Answer:

This is False

horsena [70]3 years ago
4 0

Answer:

Its FALSE

Explanation:

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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
3 years ago
Nicotine is a dangerous chemical found in cigarettes; it is accompanied by tow other very harmful chemicals. these are
Oksana_A [137]
B the most well known chemicals inside cigarettes would includen carbon monoxide and tar.
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3 years ago
Read 2 more answers
In first class levers, the
Ivenika [448]

Answer:

A. Fulcrum is between the pull and the load

Explanation:

In the first class levers, the Fulcrum is present between the force or effort and the load. Pliers, scissors, a crow bar, a claw hammer, a see-saw and a weighing balance are the examples of first class levers in which the fulcrum exists in the center while the effort is located at one side and the load is present on the other side of the fulcrum.

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3 years ago
How much or what percentage of the body's weight is<br> made up by the muscular system?
Artist 52 [7]
Uhmm should be 40% :)
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Through what experiences can you you improve your employability skills
motikmotik
Through education and real world experience like volunteer work
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