Saltatory conduction - Study guides, Revision notes & Summaries

Exam 1: BIOS 252 / BIOS252 (Latest 2024/ 2025 Update) Anatomy and Physiology II Exam Review| Questions and Verified Answers| 100% Correct| Grade A - Chamberlain Q: What is the name of the chemical that is secreted by the synaptic end bulb and is used to stimulate or inhibit another cell? A. Chemical receptors B. Meninges C. Neurotransmitters D. Saltatory conduction Answer: C. Neurotransmitters Q: Using stimulation like pressure or stretching to open a cell membran...

Layers of the skin correct answersepidermis, dermis, hypodermis Stratum Corneum correct answersProtective durable overcoat, waterproof, tough, relatively insensitive to biological, chemical and physical assault. Stratum Lucidum correct answersvisible only in thick skin, few layers thick, dead clear cells Stratum Granulosum correct answers3-5 layers of thick keratinocytes flastten out Stratum Spinosum correct answersoverlies the stratum basale, cells come from the basale, filamen...

_____________ occurs when a cell is injured and the cell body swells and shifts its nucleus to the periphery. - Chromatolysis ________________ occurs when a cell is injured and the cell body swells and shifts its nucleus to the periphery. - Chromatolysis _________________ fibers are fibers that connect one hemisphere to another. - Commissural ____________________ conduction occurs when an impulse jumps from node to node on an axon. BE SURE TO SPELL CORRECTLY - saltatory __________________...

EXPH 386 Exam 3 Latest Update Graded A+ neuromuscular system coordination and integration of the muscles of the body together with the nerves that supply them cell body (soma) -peripheral dictates 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 short neural branches that *receive* impulses through numerous connect...

Hondros Bio 253 Latest Version with Complete Solutions Layers of the skin epidermis, dermis, hypodermis Stratum Corneum Protective durable overcoat, waterproof, tough, relatively insensitive to biological, chemical and physical assault. Stratum Lucidum visible only in thick skin, few layers thick, dead clear cells Stratum Granulosum 3-5 layers of thick keratinocytes flastten out Stratum Spinosum overlies the stratum basale, cells come from the basale, filaments u the cells th...

Saltatory conduction is made possible by _____. A) large nerve fibers B) the myelin sheath C) biphasic impulses D) erratic transmission of nerve impulsesB) the myelin sheath Which part of the action potential occurs when the Na+ channels are inactivating and K+ channels open? A) depolarization B) repolarization C) resting state D) hyperpolarizationB) repolarization

The nervous system is composed of what two main classes of cells? What are they? correct answersNeurons and glial cells -- neurons = the basic signaling units that transmit information through the nervous system -- glial cells = non neural cells that provide structural support and electrical insulation to neurons. Glia are involved in metabolic functions, repair and protection of neurons, and improve conduction of signals What does presynaptic and postsynaptic mean? correct answersMost ...

Which of the following does NOT correctly match a term with its description? Depolarization --- Period during which sodium ions diffuse out of the neuron due to a change in permeability for these ions. Repolarization --- The interior of the cell becomes more negative due to the opening of potassium ion gates. Relative refractory period --- An exceptionally strong stimulus can trigger a response (action potential). Absolute refractory period --- Period during which the neuron cannot respond...

MS Etiology CORRECT ANSWER-Interaction between genetic predisposition and an inciting environmental antigen, resulting in an autoimmune response in a susceptible host. Most common cause of disability in young and middle aged adults MS Pathophysiology CORRECT ANSWER-classically associated with MS is the slowing or stopping of saltatory conduction of action potentials along myelinated axons in the CNS because of demyelination There is some evidence that the pathophysiology is related inst...

Smallest unit to product movement Correct Answer-motor unit Rate coding/Firing rate Correct Answer-frequency at which AP's are firing Axon hillock Correct Answer-where EPSPs summate to create AP Saltatory conduction Correct Answer-impulse jumps from node to node AP to MU is what kind of ratio? Correct Answer-1:1 Safety factor Correct Answer-3-5x more ACh released than needed to create an AP (overkill) SNARE proteins: definition and location Correct Answer-connect & allow vesic...