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The heart beats at around 60 beats per minute.It would start beating at around 100 beats per minute and that's just at rest.Part of what keeps your heart under control is your parasympathetic nervous system.It's often described as the calming side of your automatic system - a kind of antidote to the effects of stress created by the sympathetic system.The parasympathetic system is why our hearts ..

Your sympathetic nervous system is the part of your nervous system that responds to stress, and it does its job exceedingly well by focusing on what your body needs to do right now.Your sympathetic nervous system sweeps these suddenly trivial functions aside to blast all of your energy to your brain and heart and muscles to deal with the threat at hand.Physiological responses to non-immediate st..

Your autonomic system is the branch of your peripheral nervous system that regulates the functions of your internal organs, like your heart and stomach, and also controls your smooth and cardiac muscles, and your glands.Its effects on your organs and muscles and glands are by no means consisent.Your autonomic system is constantly making involuntary, fine-tuned adfustments to your body, based on ..

Peripheral Nervous System:puts your brain in touch with the physical environment, and allows it to respond.The peripheral nervous system's sensory nerve receptors spy on the world for the centeral nervous system, and each type responds to different kinds of stimuli.Thermoreceptors respond to changes in temperature.Photoreceptors react to light.Chemoreceptors pay attention to chemicals.Mechanorec..

Some ability to understand speech, but an inability to produce intelligible words.The central nervous system, consisting of your amazing brain and spinal cord, and the peripheral nervous system, made up of the nerves coming out of that central nervous system.The central nervous system's main game is integrating the sensory information that the peripheral system collects from all over the body, a..

Synapse:the meeting point between two neuronsTheir purpose lies in their connections.A single neuron in isolation might as well not exist if it doesn't have someone to listen or talk to.The word "synapse" comes from the Greek for "to clasp or join".It's basically a junction or a crossroads.You've got somewhere between 100 to 1,000 trillion synapses in your brain.Able to change and adapt in respo..

When a neuron is stimulated enough, it fires an electrical impulse that zips down its axon to its neighboring neurons.They've only got one signal that they can send, and it only transmits at one uniform strength and speed.That buzz, that nerve impulse, is called the action potential.It's one of the most fundamental aspects of anatomy and physiology, and really life in general.We keep 'em separat..