Introduction Nervous systems are composed of circuits of neurons‚ highly specialized cells that communicate with each other and with other types of cells by electrical or chemical signals.—The central nervous system (CNS) is composed of brain and a nerve cord. The peripheral nervous system (PNS) consists of all neurons and their projections that are outside and connect with the CNS. The most basic circuits is a reflex arc‚ which occurs rapidly in response to inputs from the sensory neurons and
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Nervous System Practice Quiz Which ancestral region of the brain is responsible for modern human’s speech and ability to do algebra? -Forebrain It is your turn to do your presentation. You have worried about this moment all month long. Are you prepared? Will someone spot that ring of sweat forming under your arms? Because of the activity of your __________ nervous system‚ ____________. -Sympathetic….epinephrine shoots through your body and your lunch suddenly does not agree with you The corpus
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* Difference in Somatic and Autonomic Nervous System * The somatic nervous system consists of nerves that provide VOLUNTARY control over skeletal muscles * The autonomic nervous system exerts INVOLUNTARY control over the contraction of smooth muscle‚ cardiac muscle‚ and glandular activity. * Basic function of the Sympathetic VS Parasympathetic Systems * Sympathetic system= “fight of flight” * Parasympathetic system= “rest and digest” * Both autonomic branches are required
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CENTRAL NERVOUS SYSTEM The Brain -recap * The brain receives signals from inside and outside the body. * It keeps the basic‚ body functions such as heart beat rate‚ breathing rate and temperature control ticking over‚ without us having to think about it. * It also allows us to decide to do things like running and walking and many more complex tasks. It is where our personalities and moods and emotions come from. * The brain of a human being makes up about one-fiftieth of
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Phoenix Material Appendix B Structures of the Nervous System This activity will increase your understanding of the different structures of the nervous system and brain. During the Web activity‚ you will view a variety of structures of the brain and nervous system and label each with the appropriate term. You will use this document to write a description for the terms you used in the activity. As you conduct the Structures of the Nervous System activity‚ follow along with this Word document and
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Artificial electrical stimulation of the nervous system is one of the foundations of neurotechnology. However‚ the use of electrical currents to stimulate the nervous system presents several challenges. It is difficult to achieve selective stimulation of only the targeted neurons without activating neighboring neurons. Further‚ electrochemical reactions at the electrode-tissue interface may lead to electrode dissolution or tissue damage. As an alternative‚ magnetic stimulation can be used to stimulate
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Nervous System: an extensive network of specialized cells that carries information to and from all parts of the body. Neuron: the basic cell that makes up the nervous system and that receives and sends messages within that system. Dendrites: branchlike structures that receive messages from other neurons. Soma: the cell body of the neuron responsible for maintaining the life of the cell. Axon: tubelike structure that carries the neural message. Glial cells grey fatty cells that provide support for
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Inside our brain‚ there is this system called the human nervous system. There are two types of nervous systems: the peripheral and central nervous systems. The peripheral nervous system includes the nerves connecting the central nervous system to the rest of the body. It has two subdivisions: somatic nervous system and autonomic nervous system. Somatic nervous system controls skeletal muscles and interacts with the external environment. An example is walking through a park. You are using your motor
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The nervous system is made up of millions of neurons and interconnected nerves that are comparable to a wiring system. The nervous system is composed of the central nervous system (CNS) and the peripheral nervous system (PNS). The nervous system functions like a corporate giant. The CEO is the leader in the CNS and the officers and delegates are the PNS. The CNS gives the commands and the PNS follows the commands. The Central Nervous System The central nervous system (CNS) is
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Anatomy of the Nervous System Structure of the Vertebrate Nervous System • Neuroanatomy is the anatomy of the nervous system. • Refers to the study of the various parts of the nervous system and their respective function(s). • The nervous system consists of many substructures‚ each comprised of many neurons. Structure of the Vertebrate Nervous System • Terms used to describe location when referring to the nervous system include: – Ventral: toward the stomach – Dorsal: toward the back –
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