The nervous system is the control center of the whole body. Nerves are alot like wires that carry signals or impulses throughout the body. Inside each nerve is a bundle of nerve fibers. Some nerves are longer than other nerves, these are the type of nerve that go from the top of your body to the bottom of your body. Nerve cells are called neurons. There are two main types of nerves: motor nerves and sensory nerves. Motor nerves are used by the brain to control all the muscles throughout our body
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“The nervous system can be separated into parts based on structure and on function: structurally, it can be divided into the central nervous system (CNS) and the peripheral nervous system (PNS) functionally, it can be divided into somatic and visceral parts.”( Drake et al.,p.55). “The somatic part of the nervous system consists of: nerves that carry conscious sensations from peripheral regions back to the CNS; and nerves that innervate voluntary muscles”.( Drake et al.,p.58) “The visceral
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* What is the job of the central nervous system (CNS)? The central nervous system, also known as the CNS, consists of three(3) major components of the human body: * Brain – the brain is made up of three(3) parts: the cerebrum, the diencephalon, and the hindbrain. * Nerve Tissue – this part of the CNS is comprised of neurons, synapses, and neurotransmitters. * Spinal Cord – protected by vertebrae in the back, the spinal cord is made up of fiber tracts and spinal nerves. (Pedersen
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appropriately to a stimulus.” (Russel, Hertz, & McMillan, 2011).Sensory receptors when stimulated by outside stimulus sends a signal via the afferent system to the central nervous system and an appropriate response is then send via the efferent system to either the somatic or autonomic system (Russel, Hertz, & McMillan, 2011). The somatic system is where voluntary action occurs namely kineses
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The nervous system has 3 main parts to it: CNS (central nervous system) Which includes the brain and spinal cord. PNS (peripheral nervous system) PNS consist of motor neurons and sensory neurons. The function of the nervous system is to control and regulate the involuntary and voluntary actions. Send and receive signals to different parts of the body, also maintains homeostasis. The sensory receptors react to stimuli appropriately. Two types of cells in the nervous system neurons and neuroglia
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from the hot cup of tea. Immediately after James feels stressed and anxious, and these are natural responses to help your body escape from danger or harm. To avoid any tissue damaged from the heat and pain, the sympathetic nervous system (SNS), a part of the involuntary nervous system, senses the stressful situation and causes the release of a hormone called epinephrine, also known as adrenaline. Once the impulse is sent, it goes directly to the adrenal medulla, the inner layer of the adrenal glands
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Heart rate is controlled by the parasympathetic and sympathetic branches of the autonomic nervous system, as well as through several corresponding hormonal pathways. The parasympathetic nervous system is responsible in the “rest and digest” responses of the body, including the role of slowing down the heart rate and reducing the strength and output of each cardiac cycles, which causes the lowering of blood pressure. Neurons located in the spinal cord and medulla of the brain stem project closely
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central nervous system is a system of the body that accounts for the brain, spinal cord, and neurons. It can be viewed as the “communication” system of the body because it is responsible for sending messages and stimuli to all parts of the body. Meninges (connective tissue) cover the brain and spinal cord which interact constantly with each other; the brain receives information, which is sent from the spinal cord, and interprets it. (1) Sensory information is sent via the central nervous system and an
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The nervous system is made up of two systems that work together to help the body function. One of the systems is the Central Nervous System (CNS) which consists of the spinal cord and the brain. The other system is the Peripheral Nervous System (PNS) which is made up the nerves that connect to the rest of the body. Working together they both contribute to the wonder known as the nervous system, but how? (Better Health Channel, 2014). As said before, the Nervous system is made up of two systems, CNS
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Central nervous system (CNS): part of the nervous system that contains the brain and spinal cord. Peripheral nervous system (PNS): second part of the nervous system that contains the sensory nerves, afferent and efferent nerves. Sensory nerves: relays information (what’s happening on the inside and outside of the cell) to the CNS. Motor nerves: the CNS relays the information received from the sensory nerves to other cells, organs, and systems in the body Neuron: can be called excitable tissue
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