Saltatory conduction - Study guides, Revision notes & Summaries

psych 115 midterm 1 UCLA Exam Questions and Answers 100% Pass What is the role of Dorsal root ganglion cells? - Answer- • DRG = unipolar neurons in peripheral nervous system • Job is to relay somatosensory info from skin to spinal cord Describe a touch stimulus. - Answer- • Touch to skin generates a receptor potential by opening mechanoreceptor Na channels • Receptor potential passively propagates (flows) to the integration zone • Receptor potential is attenuated (becomes small...

How do local anesthetics block the nerve impulse from reaching the brain? By permanently depolarizing the nerve cell membrane By overwhelming influx of fluoride ions By blocking sodium channels, thereby preventing nerve cell depolarization and impulse propagation By causing massive neurotransmitter release without uptake. By blocking sodium channels, thereby preventing nerve cell depolarization and impulse propagation How do local anesthetics stop working? By diffusion of the lo...

1. Which of the following symptoms would distinguish if a patient is experiencing a response to an overdose of a local anesthetic drug compared to symptoms of anxiety? Select one: a. Talkativeness b. Apprehension c. Circumoral tingling d. All of the above correct answer: c. Circumoral tingling Upon administering local anesthesia, the patient complains of itching and you notice urticaria developing. These symptoms are most illustrative of which of the following? Select one: a. An overd...

In the source-filter theory of speech production.. correct answers the vibrating vocal folds are the source, and the oral/nasal cavities provide the filter Which of the following articulators is used to differentiate /m/ from /b/ phonemes? correct answers Velum Elevation of the tongue tip requires contraction of which muscle? correct answers Superior longitudinal Which muscle protrudes the mandible? correct answers Lateral pterygoid The Direction Into Velocities of Articulations mode...

During the initiation of an action potential.. Sodium ion channels open and sodium ions enter the axon Organelles of the cytoplasm: Ribosomal endoplasmic reticulum, mitochondrion, lysosome, Golgi apparatus % of protein in organic matter of the body approx over 50% Factors regulated by body systems blood oxygen levels, blood temperature, body water content, blood electrolyte levels RNA's the cell produces Messenger RNA (mRNA), Transfer RNA (tRNA), Ribosomal RNA (rRNA) Organelle th...

MileDown MCAT Biology Questions and Answers | Latest Update | 2024/2025 | 100% Verified What is the role of the myelin sheath in neural transmission? The myelin sheath insulates axons, allowing for faster transmission of electrical impulses along the neuron through saltatory conduction. Describe the process of endocytosis in cellular transport. Endocytosis is a process where the cell membrane engulfs extracellular material, forming a vesicle that brings the material into the ce...

EXPH 386 Exam 3 Questions And Answers (Updated And Verified) Neuromuscular system - answercoordination and integration of the muscles of the body together with the nerves that supply them cell body (soma) -peripheral - answerdictates the critical firing rate of the action potential. Larger cell bodies are associated with higher critical firing rates. Also contain the structures involved in replication and transmission of the genetic code Dendrites - answershort neural branches that *recei...

psych 115 midterm 1 UCLA Exam Questions and Answers 100% Pass What is the role of Dorsal root ganglion cells? • DRG = unipolar neurons in peripheral nervous system • Job is to relay somatosensory info from skin to spinal cord Describe a touch stimulus. • Touch to skin generates a receptor potential by opening mechanoreceptor Na channels • Receptor potential passively propagates (flows) to the integration zone • Receptor potential is attenuated (becomes smaller) as it propaga...

Hypothalmas - Answer-Major connection between nervous system and endocrine system neuro tissue Scope of practice - Answer-massage therapy is the assessment of the soft tissue and joints of the body and the treatment and prevention of physical dysfunction and pain The council is made up of.. - Answer-6-9 RMTs elected by peers, 5-8 public members appointed by the government Client relations committee - Answer-ensures measures are in place to deal with client abuse discipline committee - Answ...

Question 1 Action potentials move down myelinated axons via saltatory conduction. This is because __________. Possible Answers: they jump from the middle of the gaps to the middle of the myelin sheaths additional impulses boost their speed periodically they jump from gap to gap in between the myelin sheaths they speed up dramatically in areas with more myelin wrapping, depending on the thickness of the sheath Correct answer: they jump from gap to gap in between the myelin sheaths Question 2 Wh...