Let’s start learning some nervous system facts. You’re going to learn all about neurons, the spinal cord, and more! Nervous System Definition The nervous system is your body’s communication center. It is made
Sensory neurons react to physical stimuli such as light, sound and touch and send feedback to the central nervous system about the body's surrounding environment, according to theAmerican Psychological Association. Motor neurons, located in the central nervous system or in peripheral ganglia, transmit...
Just the Facts: The Human Body - The Nervous System DVDNest Family Entertainment
Nervous:Thenervous systemcontrols both voluntary actions, such as conscious movements, and involuntary actions,like breathing, and it sends signals to and detects signals from different parts of the body. Conscious actions are controlled by thesomaticnervous system, while involuntary actions are controlle...
Regeneration in the Central Nervous System: Concepts and FactsRegeneration in the Central Nervous System: Concepts and FactsIn many years, based on Cajal's statement "… nerve paths are fixed, ended, immutable. Everything may die, nothing may be regenerated…" (Ramon y Cajal 1928) it has bee...
5. The Autonomic Nervous System Plays a Key Role in Digestion The autonomic nervous system controls peristalsis, the contraction and relaxation of muscle layers within the alimentary canal wall. Peristalsis is a key function in digestion; it literally gets the ball rolling. These involuntary contracti...
Messages travel through the nervous system at an incredible speed of up to 120 metres per second! 99.9% of the DNA of each person is the same. The human nose can detect about 10,000 different smells. The brain cannot feel pain.
Your brain is very complicated and fascinating! Every week for one year we posted a new and interesting fact about that 3 lb organ in your skull and other parts of the nervous system. Share these52 Brain Factswith your friends and spread the knowledge!
What science knows — and doesn’t — about orgasm. Orgasms are an autonomic reflex — part of the nervous system responsible for behaviors we don’t consciously control, explains science writer Mary Roach (TED Talk: 10 things you didn’t know about orgasm). Yet unlike other reflexes, the ...
In fact, over 20% of the calories and nutrients we consume on a daily basis go straight to the brain, and it’s why we feel irritable and dozy if we don’t eat the right food. 2. Pain The brain is the central hub for the body’s complex nervous system, where it controls how we...