front 1 What are the functions of the Nervous System? | back 1 Detects impulses from the senses; control center |
front 2 What are the major organ of the Nervous System? | back 2 Brain, Spinal Cord, senses, nerves |
front 3 Central Nervous system | back 3 consists of the brain and the spinal cord |
front 4 Peripheral Nervous System | back 4 consists of the other nerves |
front 5 cranial nerves | back 5 originate in the brain |
front 6 spinal nerves | back 6 originate in spinal cord |
front 7 Sensory (Afferent) Division | back 7 sends impulses from the senses to the CNS |
front 8 Motor (Efferent) Division | back 8 sends impulses from the CNS to the muscles and glands |
front 9 Autonomic Nervous System | back 9 involuntary muscle control |
front 10 Somatic nervous System | back 10 voluntary muscle control |
front 11 Sympathetic Division | back 11 used in emergency situations ("fight or Flight") |
front 12 Parasympathetic Division | back 12 reduces sympathetic response and provides resting functions such as digestion and urination. |
front 13 What other system does the nervous system work with? | back 13 Endocrine System |
front 14 Sensory input | back 14 it detects changes (stimuli) inside and outside the body |
front 15 Integration | back 15 processing and interpreting the information |
front 16 Response | back 16 activation of muscles (motor output) or glands |
front 17 Neurons | back 17 conducts impulses around the body (make up only 10% of nerve cells) |
front 18 Neuroglia | back 18 support, insulate & protect neurons (90% of nerve cells) |
front 19 What does the cell body contain? | back 19 nucleus, cytoplasm, & organelles |
front 20 Dendrites | back 20 bring impulses towards the cell body |
front 21 Axons | back 21 send impulses away from the cell body |
front 22 At the end of the axons are ____ _____, which release _____ to pass impulse to the next neuron. | back 22 axon terminals; neurotransmitters |
front 23 Unipolar neurons | back 23 have one process |
front 24 Bipolar neurons | back 24 have two processes |
front 25 Multipolar Neurons | back 25 have many processes |
front 26 Afferent Neurons | back 26 carry impulses toward the CNS |
front 27 Efferent Neurons | back 27 carry impulses away from the CNS |
front 28 Interneurons | back 28 connect afferent & efferent neurons |
front 29 Myelin | back 29 waxy insulation; wrapped around the. axons |
front 30 Neurilemma | back 30 outer layers of the Schwann cell |
front 31 How is a myelin formed? | back 31 a Schwann cell wraps around itself around the axon, like a coil |
front 32 Myelin | back 32 helps the nerve impulses to travel more quickly |
front 33 Nodes of ranvier | back 33 gaps between the myelin sheath |
front 34 Astrocytes | back 34 support & anchor neurons to surrounding capillaries |
front 35 Microglia | back 35 provide immune response to central nervous system |
front 36 Ependymal cells | back 36 Secrete and circulate cerebrospinal fluid |
front 37 Oligodendrocytes | back 37 provide myelin insulation to neurons in the central nervous system |
front 38 Satellite cells | back 38 support and anchor neurons in the peripheral nervous system |
front 39 Schwann cells | back 39 provide myelin insulation to nervous in the peripheral nervous system |
front 40 Depolarization | back 40 Also known as the action potential when the neuron is stimulated, either by the environment or another neuron, sodium rushes into the neuron and quickly reverses the charges |
front 41 Repolarization | back 41 as the impulse passes, potassium diffuses out the neuron |
front 42 Synapse | back 42 where 2 neurons meet |
front 43 Synaptic Cleft | back 43 space between 2 neurons |
front 44 Which nerve is used to carry information for hearing? | back 44 Auditory nerve |
front 45 Which nerve is used to carry information for vision? | back 45 optic |
front 46 Which nerve is used to carry information for balance? | back 46 vestibular |
front 47 Which nerve is used to carry information for smell? | back 47 olfactory |
front 48 Gustatory cells use ... | back 48 taste |
front 49 Olfactory cells use ... | back 49 smell |
front 50 Papillae use ... | back 50 taste |
front 51 Organ of conti use ... | back 51 hearing |
front 52 Taste buds are found in structures called... | back 52 papillae |
front 53 Where on the retina is the image clearest? | back 53 fovea centralis |
front 54 Which 2 special senses use chemoreceptors? | back 54 Taste and smell |
front 55 Aqueous humor | back 55 aids in light refraction |
front 56 vitreous humor | back 56 fills space between lens and retina |
front 57 How an impulse crosses a synapse | back 57 When an impulse reaches axon terminals, calcium channels open causing
a release of neurotransmitters. When these are recognized on the
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