Nervous system

Neuron/ˈnʊərɒn/NounA nerve cell that transmits electrical impulses in the brain and throughout the nervous system.Tế bào thần kinhExample: Neurons communicate with each other via synapses. Related: neuronal, neurotransmitter.
Synapse/ˈsɪnæps/NounThe junction between two nerve cells, where neurotransmitters are released to transmit signals.Khớp thần kinhExample: The synapse allows neurons to pass electrical or chemical signals. Related: synaptic, synaptogenesis.
Axon/ˈæksɒn/NounThe long, slender projection of a neuron that conducts electrical impulses away from the neuron’s cell body.Sợi trục thần kinhExample: Axons can be covered with myelin to increase the speed of transmission. Related: axonal, axon terminal.
Dendrite/ˈdɛndraɪt/NounThe branched projections of a neuron that receive signals from other neurons.Sợi nhánhExample: Dendrites play a key role in the transmission of signals to the neuron’s cell body. Related: dendritic, dendritic spines.
Myelin/ˈmaɪəlɪn/NounA fatty substance that surrounds the axon of some nerve cells, forming an insulating layer.MyelinExample: Myelin sheaths are essential for the fast transmission of nerve impulses. Related: myelination, myelin sheath.
Glial Cells/ˈɡlaɪəl sɛlz/NounNon-neuronal cells in the nervous system that provide support and protection for neurons.Tế bào thần kinh đệmExample: Glial cells include astrocytes, oligodendrocytes, and microglia. Related: neuroglia, glial function.
Cerebrum/səˈriːbrəm/NounThe largest part of the brain, responsible for voluntary actions, speech, senses, thought, and memory.Đại nãoExample: The cerebrum is divided into two hemispheres. Related: cerebral cortex, cerebral hemispheres.
Cerebellum/ˌsɛrəˈbɛləm/NounA region of the brain that coordinates voluntary movements such as posture, balance, and speech.Tiểu nãoExample: The cerebellum helps maintain balance and coordination. Related: cerebellar, cerebellar peduncles.
Brainstem/ˈbreɪnˌstɛm/NounThe posterior part of the brain that connects the cerebrum with the spinal cord and controls vital functions.Thân nãoExample: The brainstem regulates heart rate, breathing, and sleep cycles. Related: medulla oblongata, pons, midbrain.
Spinal Cord/ˈspaɪnəl kɔːd/NounThe cylindrical bundle of nerve fibers that extends from the brainstem down the spinal column, transmitting signals.Tủy sốngExample: The spinal cord acts as a conduit for signals between the brain and the rest of the body. Related: spinal nerves, central nervous system.
Peripheral Nerves/pəˈrɪfərəl nɜːvz/NounNerves located outside the brain and spinal cord, responsible for transmitting signals to and from the central nervous system.Dây thần kinh ngoại viExample: Peripheral nerves include sensory and motor nerves. Related: peripheral neuropathy, peripheral nervous system.
Autonomic Nervous System/ˌɔːtəˈnɒmɪk ˈnɜːvəs ˈsɪstɪm/NounThe part of the nervous system that controls involuntary functions such as heart rate, digestion, and respiratory rate.Hệ thần kinh tự chủExample: The autonomic nervous system is divided into the sympathetic and parasympathetic nervous systems. Related: autonomic functions, autonomic dysreflexia.
Sympathetic Nervous System/ˌsɪmpəˈθɛtɪk ˈnɜːvəs ˈsɪstɪm/NounA division of the autonomic nervous system that prepares the body for stressful or emergency situations.Hệ thần kinh giao cảmExample: The sympathetic nervous system triggers the “fight or flight” response. Related: sympathetic chain, sympathetic response.
Parasympathetic Nervous System/ˌpærəˌsɪmpəˈθɛtɪk ˈnɜːvəs ˈsɪstɪm/NounA division of the autonomic nervous system that conserves energy and restores the body to a state of calm.Hệ thần kinh phó giao cảmExample: The parasympathetic nervous system promotes “rest and digest” activities. Related: parasympathetic tone, vagus nerve.
Thalamus/ˈθæləməs/NounA brain structure that acts as a relay station, transmitting sensory and motor signals to the cerebral cortex.Đồi thịExample: The thalamus is involved in sensory perception and regulation of motor functions. Related: thalamic, thalamocortical.
Hypothalamus/ˌhaɪpəˈθæləməs/NounA small region of the brain that controls many bodily functions, including temperature regulation, hunger, and hormone release.Vùng hạ đồiExample: The hypothalamus links the nervous system to the endocrine system via the pituitary gland. Related: hypothalamic, hypothalamic-pituitary axis.
Amygdala/əˈmɪɡdələ/NounA brain structure involved in processing emotions, particularly fear and pleasure.Hạch hạnh nhânExample: The amygdala plays a key role in the formation of emotional memories. Related: amygdaloid, limbic system.
Corpus Callosum/ˌkɔːrpəs kəˈloʊsəm/NounA thick band of nerve fibers that connects the left and right cerebral hemispheres, enabling communication between them.Thể chaiExample: The corpus callosum facilitates communication between the two sides of the brain. Related: interhemispheric, split-brain.
Meninges/məˈnɪndʒiːz/NounThe three protective membranes that cover the brain and spinal cord.Màng nãoExample: The meninges consist of the dura mater, arachnoid mater, and pia mater. Related: meningitis, meningeal.
Cerebrospinal Fluid/səˌriːbroʊˈspaɪnəl ˈfluːɪd/NounA clear, colorless body fluid found in the brain and spinal cord that cushions the brain and removes waste.Dịch não tủyExample: Cerebrospinal fluid circulates through the ventricles of the brain. Related: CSF, lumbar puncture.
Blood-Brain Barrier/ˌblʌdˈbreɪn ˈbæriər/NounA selective barrier that prevents certain substances from entering the brain while allowing others to pass.Hàng rào máu nãoExample: The blood-brain barrier protects the brain from harmful substances in the blood. Related: permeability, neuroprotection.
Nervous system
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