plexus→ Hypogastric nerve (Postganglionic motor fibres) → UB Parasympathetic: Lateral horn cells of S2-S4 segments of spinal cord (Preganglionic motor fibres) → Form pelvic splanchnic nerve→ Synapse with the cell bodies of postganglionic motor fibres situated close to or within the bladder wall→ UB Somatic nervous systems: Anterior horn cells (Onuf’s nucleus) of S2-S4 segments of spinal cord→ Pudendal nerve Storage phase: Low-frequency (as stretch is low) afferent impulse from the stress receptor
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sensors to modulators or from modulators to effectors (nerves) (3) modulators: interpret sensory information and send information to effectors (brain‚ spinal cord) (4) effectors: part of the body that responds because of information from a modulator (muscles‚ glands) The Human Nervous System Two main components of the human nervous system: (1) central nervous system (CNS): the brain and spinal cord (2) peripheral nervous system (PNS): the nerves that enter and leave the brain and spinal cord CNS 6
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hair and a taste pore. As you eat‚ food particles mix with saliva and enter the taste pore‚ in turn interacting with the gustatory hair. Once it is stimulated‚ the message then travels down your glossopharyngeal cranial nerve in order for you to interpret the taste. These neural impulses are transmitted through neurons and membrane potentials. Your insula then uses the gustatory cortex to interpret the sensory information from your tastebuds and you are able to determine that the burger you are eating
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Margo Moriarty EDU-213 Brain Function Table Component Definition Role in Learning and Development Neurons A Neuron is a specialized nerve cell that receives‚ processes‚ and transmits information to other cells in the body. Basically‚ it is the messenger cell responsible for receiving and transmitting information. Neurons are the information processing components of the brain‚ each part of the neuron is responsible for receiving and transmitting information. Each neuron please do use role
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is received‚ the neuron will then send neurotransmitters to the next neuron through the axon. After the neurotransmitters pass through the axon they are released through the terminal buttons. Then‚ the nerve impulses pass to a nerve cell at a site called the synapse. At this site‚ the impulse is transmitted to the other cell. The neurotransmitters must pass through a gap between the cells. This gap is called the synaptic cleft. Through this gap‚ the neurotransmitters are allowed to flow out of
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Upper motor neurons and lower motor neurons act to carry nerve impulses from the brain out to the muscles in the body. Upper motor neurons supply input to the lower motor neurons. They do this by either synapsing directly to lower motor neurons‚ or by synapsing with a local circuit neuron‚ which then synapses with a lower motor neuron. The upper motor neurons originate in the motor region of the cerebral cortex or brainstem. The neurons from the cerebral cortex are important for planning‚ initiating
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1. White matter is found on the outside or surface of the cord. It connects the cord and the brain and is made up of nerve fibres. White matter contains motor fibres which run down from the motor centre of the brain‚ the cerebrum and the cerebellum to the motor cells of the cord Sensory fibres also run up the cord from the sensory cells of the cord to the sensory centre of the brain. 2. ANTERIOR HORNS – The anterior horns of the spinal cord is the front grey matter section of the spinal
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Reagan Purser Study Words on Quizlet http://quizlet.com/35745265/anatomy-ch-10-flash-cards/ Chapter 10: Somatic and Special Senses 1. Sensory Receptors: Detect environmental changes and trigger nerve impulses that travel on sensory pathways into the central nervous system for processing and interpretation. 2. Somatic Senses: Touch‚ pressure‚ temperature‚ and pain 3. Special Senses: Smell‚ taste‚ hearing‚ equilibrium‚ and vision 4. 5 groups of sensory receptors: Chemoreceptors‚ Pain receptors
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Spring 2014 Using the Figure‚ match the following: 1) Innervates the superior oblique muscle. 2) Longest cranial nerve. 3) Damage to this nerve would cause dizziness‚ nausea‚ and loss of balance. 4) Involved in movement of the digestive tract. 5) Damage to this nerve would cause difficulty in speech and swallowing‚ but no effect on visceral organs. 6) Damage to this nerve would keep the eye from rotating inferolaterally. Using the Figure‚ identify the following components of the reflex arc:
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Human Biology 3A Notes CHAPTER 4: Chemical Messengers Homeostasis: the maintenance of a constant internal environment Homeostasis ensures that the fluid environment of the cells: • Contains the optimum concentration of nutrients‚ ions‚ gases and water • Stays at a constant temperature – the optimum temperature for normal cell functioning • Is maintained at the optimum pressure Feedback system: Negative feedback system: Negative feedback: Positive feedback: A situation where the response toa
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