The nervous system can be divided into central and peripheral nervous systems. The brain is made up of three sections: the cerebrum, cerebellum and brain stem. The spinal cord is a long tube-like structure that is protected by a bony spinal column called the vertebrae. Neurons transfer information to each other and make connections, which in turn affect the way you learn, move and react. EXERCISE A.
• Interneurons: found in the brain and spinal cord, process incoming impulses and pass them on to motor neurons. • Motor Neurons: carry impulses away from the brain and spinal cord to voluntary muscle. Neurons communicate via an electrochemical signal called an action potential that sends information down an axon and away from the cell body. They are based on the movements of ions through channels in the membrane of an axon. A molecular message is sent to neighboring neurons when an action potential is reached.
It consist manly two parts which are spinal cord and the brain. The spinal cord is a bundle of nerves that leaves the brain and runs down the length of back. The spinal cord is a cylindrical shape bundle of nerve fibers that connect to the brain. Spinal cord is the main component which communicate and transmitting the message between the brain and body. As well spinal cord transmits external stimuli to the brain.
The nervous system is the body's decision and communication center. The central nervous system (CNS) is made of the brain and the spinal cord and the peripheral nervous system (PNS) are made of nerves. The brain is made of three main parts which are the forebrain, midbrain, and hindbrain. The forebrain consists of the cerebrum, thalamus, and hypothalamus. The midbrain consists of the tectum and tegmentum.
An important structure of nervous tissue are the neuroglial cells. Neurons are a specialized type of cell that receive and transmit information as electrical or chemical signals. Neurons pass on the information by synapses which are structures that resemble junctions in non-neural cells (Campbell, 2004). A neuron consists of three elements. The soma is the central body
It also assists people when they are learning a new motor skill, such as playing a sport or musical instrument. Recent research shows that apart from motor functions cerebellum also has some emotional role.” (“Nervous System, innerbody.com”) The next part of the Central Nervous System is the brain stem. The brain stem is responsible for basic vital actions such as breathing, blood pressure, and heartbeat. (“Brain Structures and their Functions, serendip.brynmawr.edu”) The last part of the Central Nervous System is the spinal cord. The spinal cord is located and protected by the spine.
The nervous system consists of two divisions; the central nervous system and the peripheral nervous system. The central nervous system is the combination of the nerves within the skull and spine, while the peripheral nervous system is the nervous system that goes everywhere inside (autonomic nervous system) and outside (somatic nervous system) around the body except skull and spine. The somatic nervous system has two kinds of nerves; afferent nerves that carry sensory signals from the external parts of the body to center, and efferent nerves which carry motor signals from central nervous system to muscular system. The autonomic nervous system also has afferent and efferent nerves and afferent nerves carry sensory signals from internal organs
The short term immune response is known as the Innate Immune System and the long term is known as the Adaptive Immune Response. Monocytes and macrophages, primarily involved in atherosclerosis, are part of the innate immune response. Macrophages have two main functions. They can act as phagocytes that engulf foreign particles or as antigen presenting cells. They receive signals in order to be activated.
Neuron has a wide structure of input data (dendrites), kernel and branching output (the axon). Axons of the cells connect to other cells of dendrites via synapses. When activated, a neuron sends an electrochemical signal through the axon. Through synapses this signal reaches to other neurons that may be activated in turn. The neuron is activated when the total level of signals coming into its kernel of dendrites exceeds a certain level (activation threshold).