https://padlet.com/Sergio_Prieto/Nervous_System Descriptions on Nervous System en-us 2016-04-16 14:25:19 UTC 2016-04-17 16:26:04 UTC hello@padlet.com https://padlet-assets.storage.googleapis.com/portrait/soccer_kick.jpg Sergio_Prieto https://padlet.com/Sergio_Prieto/Nervous_System/wish/106145789 The nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body. The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts. ]]> 2016-04-16 20:05:00 UTC https://padlet.com/Sergio_Prieto/Nervous_System/wish/106145789 Sergio_Prieto https://padlet.com/Sergio_Prieto/Nervous_System/wish/106145814

]]> 2016-04-16 20:05:55 UTC https://padlet.com/Sergio_Prieto/Nervous_System/wish/106145814 Sergio_Prieto https://padlet.com/Sergio_Prieto/Nervous_System/wish/106145898

]]> 2016-04-16 20:08:02 UTC https://padlet.com/Sergio_Prieto/Nervous_System/wish/106145898 Sergio_Prieto https://padlet.com/Sergio_Prieto/Nervous_System/wish/106146285 The brain, along with the spinal cord, comprises the body's central nervous system. This is the major control network for the body's functions and abilities, and enables conscious communication with our body and automatic operation of vital organs.It controls our muscle movements, the secretions of our glands, and even our breathing and internal temperature. Every creative thought, feeling, and plan is developed by our brain. The brain’s neurons record the memory of every event in our lives.]]> 2016-04-16 20:22:33 UTC https://padlet.com/Sergio_Prieto/Nervous_System/wish/106146285 Sergio_Prieto https://padlet.com/Sergio_Prieto/Nervous_System/wish/106146341 The spinal cord is a major component of the central nervous system (CNS) that forms the vital link between the brain and most of the body. Its 31 spinal segments connect the CNS to the organs and tissues of the neck, torso, and limbs. The spinal cord also performs important processing functions to maintain balance and respond quickly to stimuli. The spinal cord is a mass of nervous tissue that extends from the brain stem through the vertebral canal of the cervical and thoracic regions, ending around the T12 or L1 vertebra. It is a long tube about 18 inches (45 cm) in length and around half an inch (1 cm) in diameter at its widest point.]]> 2016-04-16 20:24:41 UTC https://padlet.com/Sergio_Prieto/Nervous_System/wish/106146341 Sergio_Prieto https://padlet.com/Sergio_Prieto/Nervous_System/wish/106146463 Our sensory organs are the skin, nose, ears, eyes, and tongue. They enable us to use our senses of touch, smell, taste, hearing and sight to detect changes in our environment. The changes in our environments are called stimuli]]> 2016-04-16 20:27:50 UTC https://padlet.com/Sergio_Prieto/Nervous_System/wish/106146463 Sergio_Prieto https://padlet.com/Sergio_Prieto/Nervous_System/wish/106147444 The majority of the nervous system is tissue made up of two classes of cells: neurons and neuroglia. Neurons, also known as nerve cells, communicate within the body by transmitting electrochemical signals. Neurons look quite different from other cells in the body due to the many long cellular processes that extend from their central cell body. The cell body is the roughly round part of a neuron that contains the nucleus, mitochondria, and most of the cellular organelles.Long transmitting processes called axons extend from the cell body to send signals onward to other neurons or effector cells in the body. There are 3 basic classes of neurons: afferent neurons, efferent neurons, and interneurons. Afferent neurons transmit sensory signals to the central nervous system from receptors in the body.  efferent neurons transmit signals from the central nervous system to effectors in the body such as muscles and glands.Interneurons form complex networks within the central nervous system to integrate the information received from afferent neurons and to direct the function of the body through efferent neurons. ]]> 2016-04-16 20:57:08 UTC https://padlet.com/Sergio_Prieto/Nervous_System/wish/106147444 Sergio_Prieto https://padlet.com/Sergio_Prieto/Nervous_System/wish/106147539 Neuroglia, also known as glial cells, act as the “helper” cells of the nervous system. Each neuron in the body is surrounded by anywhere from 6 to 60 neuroglia that protect, feed, and insulate the neuron. Because neurons are extremely specialized cells that are essential to body function and almost never reproduce, neuroglia are vital to maintaining a functional nervous system. ]]> 2016-04-16 21:01:11 UTC https://padlet.com/Sergio_Prieto/Nervous_System/wish/106147539 Sergio_Prieto https://padlet.com/Sergio_Prieto/Nervous_System/wish/106147559

There are approximately 100 billion neurons in the human brain and 13.5 million neurons in the human spinal chord.

The nervous system can transmit signals at speeds of 100 meters (328 feet) per second.

]]> 2016-04-16 21:02:11 UTC https://padlet.com/Sergio_Prieto/Nervous_System/wish/106147559 Sergio_Prieto https://padlet.com/Sergio_Prieto/Nervous_System/wish/106147626 1. http://www.livescience.com/22665-nervous-system.html
2. http://www.innerbody.com/image/nervov.html

]]> 2016-04-16 21:04:15 UTC https://padlet.com/Sergio_Prieto/Nervous_System/wish/106147626 Sergio_Prieto https://padlet.com/Sergio_Prieto/Nervous_System/wish/106148117 Skeletal System: The calcium from our bones helps our nervous system function. Our skull protects our brains from injuries.
Digestive System:Sends messages from the brain to the muscles in your digestive system for eating and elimination of waste food. It sends sensory information to the brain.]]> 2016-04-16 21:19:21 UTC https://padlet.com/Sergio_Prieto/Nervous_System/wish/106148117