Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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- G Lateral hom (visceral motor zone) + Ventral root Synapse in trunk ganglion at the same level level Synapse in trunk ganglion at a higher or lower level Pass through sympathetic trunk to synapse in a collateral ganglion anterior to the vertebral column Dorsal root -Dorsal root ganglion Dorsal ramus of spinal nerve -Ventral ramus of spinal nerve Arrector pili muscles and sweat glands of skin Smooth muscle of blood vessels Smooth muscle and glands of abdominal organs (e.g. intestine) 39 Effectorsarrow_forwardBipolar neurons: have many axons detect touch and vibration are motor neurons are found in the headarrow_forward1. Label the parts of this neuron: 2. Explain the function of each component in #1. 3. Mark the following statements as TRUE or FALSE: An action potential is something that only occurs at synapses. Afferent pathways send sensory information to the CNS for processing. When they are at rest, neurons are more positively charged inside than outside the cell. FALSE Action potentials originate at the axon terminal and move towards the dendrites. An action potential travels down the length of the neuron with the help of voltage-gated calcium channels. Neurons can only have one action potential and must be recycled by glia once they have depolarized. At axon terminals, calcium influx stimulates vesicle release. Ligand-gated ion channels open in response to a molecule binding to them. 4. For each FALSE statement in #3, explain why it is incorrect. Page 1 of 1 https://menlo.schoology.com/assets/bundles/js/pdftron-webviewer/a.&preloadWorker-1&pdfnet3D0&pageHistory=1&useDownloader=0&subzero=1arrow_forward
- A person who experienced paralysis occasionally was examined and found to have very lowlevels of potassium in the blood and other tissues. The paralysis likely resulted because of the inabilityofA. capillaries to provide adequate blood flowB. axon terminals to break down acetylcholineC. neurons to repolarize during the refractory periodD. neurons to remove acetylcholine from the synapsearrow_forwardIdentify the neuron structures (1-8) 1 2 3 4 5 6 7 8 axon meylin axon hillock dendrite synapse Nissl body axon terminal synapse ✪ î û î ()arrow_forwardWhich alternative best describes the microglial cells? -they are concentrated in areas of damage or stroke -they generate micro tears in neuron axons -they produce CSF -myelin sheath producersarrow_forward
- Which of the following nerves would be expected to have the slowest conduction rate of action potentials? Only one answer 1. Unmyelinated axon; Diameter: .0001 millimeter 2. Myelinated axon; Diameter: .001 millimeter 3. Unmyelinated axon; Diameter: .005 millimeter 4. Myelinated axon; Diameter: .005 millimeterarrow_forwardAn individual diagnosed with CMT has difficulty holding a cup because: a. The myelin in the motor neurons is damaged thereby preventing an impulse frommoving along the axonb. The myelin in the sensory neurons is damaged thereby preventing an impulse frommoving along the axonc. The dendrites in the motor neurons are damaged thereby preventing an impulse frommoving along the axond. The dendrites in the sensory neurons are damaged thereby preventing an impulse frommoving along the axonarrow_forwardPeripheral axons can mainly regenerate because of Astrocytes Schwann cells Construction of the neurolemma Oligodendrocytes All of the above are correctarrow_forward
- some blanks may be filled with more than one term; some terms may be used more than once, some terms may not be used) ACh (acetylcholine) Brainstem CN I CN II CN III CN IV CN IX CN V CN VI CN VII CN VIII CN X CN XI CN XII Ganglionic parasympathetic neurons Ganglionic sympathetic neurons Lateral horn of spinal cord segments T1-L2 Lateral gray matter of spinal cord segments S2-S4 Medulla oblongata Midbrain NE (norepinephrine) Parasympathetic Paravertebral ganglia Parasympathetic autonomic ganglia Pelvic splanchnic nerve Pons Postganglionic parasympathetic neurons Postganglionic sympathetic neurons Preganglionic parasympathetic neurons Preganglionic sympathetic neurons Prevertebral ganglia Spinal cord segment C1-C4 Spinal cord segment C5-T1 Spinal cord segment T1-L2 Spinal cord segment L1-L4 Spinal cord segment L4-S4 Spinal cord segment S2-S4 Somatic motor neurons Somatic sensory neurons Sympathetic Sympathetic chain ganglia Sympathetic trunk ganglia Visceral sensory neurons…arrow_forwardOn this motor neuron, Add in and label: dendritic spines an axon collateral, with axon terminals synaptic knobs myelin on the axon and axon collateral synaptic knobs Draw arrows and label: ахon axon terminals synaptic knobs cell body dendrites and dendritic spines And draw an arrow showing the direction the action potential travels.arrow_forwardHow does lidocaine cause numbness when injected? destroys pain receptors repolarizes sensory axons blocks effectors from reaching threshold prevents voltage gated channels from openingarrow_forward
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