The nervous system is made up of all the nerve cells in your body. It is through the nervous system that we communicate with the outside world and, at the same time, many mechanisms inside our body are controlled. The nervous system takes in information through our senses, processes the information and triggers reactions, such as making your muscles move or causing you to feel pain. For example, if you touch a hot plate, you reflexively pull back your hand and your nerves simultaneously send pain signals to your brain. Metabolic processes are also controlled by the nervous system.
There are many billions of nerve cells, also called neurons, in the nervous system. The brain alone has about 100 billion neurons in it. Each neuron has a cell body and various extensions. The shorter extensions (called dendrites) act like antennae: they receive signals from, for example, other neurons and pass them on to the cell body. The signals are then passed on via a long extension (the axon), which can be up to a meter long. The nervous system takes in information through our senses, processes the information and triggers reactions, such as making your muscles move or causing you to feel pain. For example, if you touch a hot plate, you reflexively pull back your hand and your nerves simultaneously send pain signals to your brain.
Answer:
Hello!
Explanation:
Stated clearly in instructions.
Answer:
True
Explanation:
The amount of blood that the heart pumps per minute through the circulatory system is called the cardiac output.
Stroke volume is the amount of blood that pushed out of the ventricle in one contraction or one beat.
The cardiac output is calculated by multiplying the number of heartbeats per minute (heart rate) and the stroke volume.
Thus, cardiac output = Heart rate × Stroke volume. The value of cardiac output is expressed as litre/minute.
Answer:
True
Explanation:
It also causes liver problems