Nervous System

A central vacuum system makes vacuuming easier than with the traditional moveable unit. It can also add value to your home, and help you save money in the long run, which has helped central vacuum systems more popular.

The nervous system relies on more rapid mechanisms of chemical and electrical transmission to propagate signals and commands. The rapid conduction of impulses is essential in allowing the nervous system to mediate short-term and near immediate communication and control between various body systems.

Nerve cells are specialized so that at one end there is a flared structure termed the dendrite. At the dendrite, the neuron is able to process chemical signals from other neurons and endocrine hormones. If the signals received at the dendrite end of the neuron are of a sufficient strength, and properly timed, they are transformed into action potentials that sweep down the neural cell body (axon) from the dendrite end to the other end of the neuron, the presynaptic portion of the axon that ends at the next synapse (the extra cellular gap between neurons)in the neural pathway. The arrival of the action potential at the presynaptic terminus causes the release of ions and chemicals (neurotransmitters).

The autonomic nervous system (ANS) contributes to the stability of the internal environment of the body (homeostasis). The autonomic nervous system continuously makes adjustments to our body to maintain equilibrium. The ANS regulates cardiac and smooth muscles and glands. One example of the function of the autonomic nervous system is when our pupils constrict when bright light is shining into our eyes. There are two main branches of the autonomic nervous system, the sympathetic and parasympathetic.

It is a norepinephrine reuptake inhibitor. Norepineprhine is a stimulating neurotransmitter. It makes you feel up, energetic, and hyperactive. It also increases your heart rate and blood pressure. When norepinephrine is released from nerve cells in the synapse to send a signal on to the next nerve cell, there is a reuptake pump that removes the norepinephrine to cut the signal off. This keeps the pathway from firing to much or too long and preserves the norepinephrine for future use. Cocaine blocks the reuptake system and makes the stimulating stronger and last longer. However it that means that you also deplete your supply of norepinephrine and "crash". This makes you feel tired. So you keep wanting more cocaine to get back to that good (high) feeling, but because you have used up the norepinephrine you never quite reach it. That makes cocaine very addictive.

neuron

the respiratory system

Central Nervous System and Peripheral Nervous System

the CNS is the Brain and the Spinal cord which send and receive signals via the peripheral nervous system (all nerves outside the spinal cord)

So, pretty much everything really:

anything which has voluntary muscular control

some organs, including heart, lungs

temperature across the body is controlled by the hypothlamus, part of the brain

the autonomic nervous system is part of the peripheral nervous system and controls glands including sweat glands, adrenal glands, salivary glands (basically most things which result in things being secreted), sexual excitation, taste and various other miscellaneous phenomena (i.e i cant remember)

but it could be argued, by being aware of these things (via consciousness which is generated in the CNS) the CNS indirectly controls these too

(you sweat more when nervous, you behave differently when sexually aroused which would lead (hopefully) to being further aroused...


etc

Taste buds are receptors in the periphery that activate certain cranial nerves (VII, IX, & X), they therefore they may be considered to be part of the peripheral nervous system.

Given that these are columnar epithelial cells that they may actually be considered to be outside of the nervous system. They do however generate receptor potentials to certain tastants that will intern excite the peripheral axons resulting in action potentials that will eventually make into the central nervous system.

connecting mechanism is the part of female that reproduce egg cell

Many drugs will actually improve the human nervous system with almost no side effects. One of the most effective drugs that anybody could take to improve their nervous system is heroin

i think the brain sends messages between different parts of the body.

Al Gore is not the answer. The correct answer is the hypothalamus.

sympathetic nervous system.

The central nervous system is like the command center, while the peripheral nervous system is like the communication center between the organs of the body and the CNS and visa versa.

The sensory receptor

velocity proportional to square root of diameter

There are two parts of the autonomic nervous system-the sympathetic and the parasympathetic. The sympathetic nervous system initiates the fight-or-flight response, which increases heart rate, blood pressure, and cardiac output.

They are numbered by the level on spinal cord: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral and 1 coccygeal.

the neuron that controls our eye movement and it ism important

vagus nerve

The autonomic nervous system that controls the functions within the body. Some functions that it controls are the heartbeat, digestive system, and breathing. The autonomic nervous system is the part of the peripheral nervous system that acts as a control system. It functions largely below the level of consciousness to control visceral functions.

Damage to a single spinal nerve will not completely paralyze a limb.

The impulse ends in the terminal or synaptic knob. Here neurotransmitters are put in vesicles and travel across the synaptic cleft to the next neuron.

A human nervous system is much more complex. Unlike a human a jellyfish does not have a central nervous system.