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The spine is the connected column of bones running from the head to the lower back. A single bone is called a “vertebra and multiple bones are called “vertebrae”. The spine has five sections. Each section is made up of a group of vertebrae. The cervical (C) section is at the top of the spineContinue reading “Spinal Cord Vertebrae”

The central nervous system controls all voluntary movement (e.g. walking) and involuntary movements, such as breathing.  The brain is like a central computer or center of command of the body.  The brain control thoughts, perceptions, emotions, interpret the external environment, and control body movement among many other things. It interprets information from our sensory organsContinue reading “The Spinal Cord”

The human nervous system is divided into (1) the central nervous system (CNS) which includes the brain and the spinal cord and (2) the peripheral nervous system (PNS) which consists of nerve cells that carry information to or from the central nervous system. The nervous system is composed of two main classes of cells: neuronsContinue reading “The Nervous System”

Los seres vivos se caracterizan por tener una (ejemplo bacterias) o más células. Lo primero que aprendemos en biología general es que la célula es la unidad básica de vida.   Hay unas características generales para poder clasificar algo como vivo.  Los organismos tienen que nacer, crecer, desarrollarse o diferenciarse, reproducirse y finalmente, morir. Otras característicasContinue reading “¿Qué describe a un ser vivo?”

One common phrase used when we think a lot or are making some “mental exercise” is that the neurons are burned.  Do you know what a neuron is? Let’s learn what is a neuron. Our brain and nervous system are made of nerve cells called neurons. The brain contains around 100 billion neurons. These nerveContinue reading “What is a Neuron?”