Propogation - Study guides, Class notes & Summaries

absolute refractory period correct answer: 0.5 ms, sodium channels open, another AP cannot be created at this location, sets upper limit to how fast an AP can be repeated relative refractory period correct answer: a few to 20 ms following absolute refractory period, potassium channels open, another AP can be created if stimulation is greater than threshold all or none correct answer: action potential is created at a certain threshold and has just one magnitude no matter the amount of st...

Phsiatrists and neurologists Who else besides PTs can perform EMG/NCV testing? Individual state practice acts What regulates PTs ability to perform EMG/NCV testing? Michigan, west Virginia, Hawaii and NJ In what states is EMF/NCV testing not allowed in No Does EMG/NCV determine a specific diagnosis 100-200 cases under a trained electromyographer, continuing education courses. Loose because there is no regulatory body What qualifications are required to perform EMG/NCV testing? Are qu...

action potential - the change in electrical potential associated with the passage of an impulse along the membrane of a muscle cell or nerve cell. Eppendymal cells - produce cerebrospinal fluid satellite cells - surround neuron cell bodies in PNS Schwann cells - produce myelin in PNS stages of AP - 1. depolarization-->threshold reached, Na+ IN --peak: VG Na+ channels Inactivate arization--> K+ OUT 3. hyperpolarization- K+ closes slowly, extra leaves Astrocytes (CNS) - for blood br...

Fiber Optics quiz 100% solved What are the two basic types of fiber? - Answer ️️ -- Multi-mode - Single-mode What are the three parts of an optical fiber? (Hint, 3 C's) - Answer ️️ -- core - cladding - coating The North American Standard core sizes for multimode fiber are ____ and ____. - Answer ️️ -- 52.5 microns - 50 microns The core size for Corning single-mode fiber is ____. - Answer ️️ -- 8.2 - 8.3 microns The cladding size for both single-mode and multimode fiber...

Question 1 Correct 5.00 points out of 5.00 Flag question Which of the following statements best predicts the effect of a substance that blocks creatine kinase activity? Select one: Straighterline BIO 201 Anatomy & Physiology I Graded Exam 3 (New Version June 2024) We are a team of experts offering class attendance for all Straighterline, Online ATI, HESI, NCLEX, Portage Learning, Sophia etc courses (including final proctored exams!!). We also write essays, discussion posts, research p...

AQA A Level Topic 6 Organisms and response Stimulus A change in an organism's surroundings that causes the organism to react Receptor Detect stimulus. Specific to one type of stimulus. Effector an organ or cell that acts in response to a stimulus. Stimulus response pathway Stimulus - receptor - coordinator - effector - response taxis Movement toward or away from a stimulus. Direction of response determined by direction of the stimulus. positive taxis negative taxis Photota...

CLTM Neuroanatomy/Neurophysiology how long before brain cells start to die when deprived of oxygen - correct answer 3-5 minutes irreversible neuronal death begins at blood flows below - correct answer 12m/100g/min transverse temporal gyrus AKA - correct answer Heschl's gyrus first cortical structure to receive/process most of the incoming auditory information - correct answer transverse temporal gyrus transverse temporal gyrus is located - correct answer in the primary auditory cor...

ANA 442 Exam 1 (Answered) Verified solution Graded A+ twentieth century when the bulk of neuroscience knowledge was discovered Morgan ___________ discovered that genes are hereditary Cjal Discovered the neuron doctrine Oligodendrocytes glia that wrap CNS axons, forming the myelin sheath Schwann cells glia that wrap PNS axons, forming the myelin sheath Astrocytes Glia that play roles in development and neuronal communication Microglia Glia that plays a role in the immune system N...

. Implementation of an IA operational baseline will be an incremental process of ? Protecting critical assets According to DoD 8570.01-M, the IA technical category consists of how many levels? I, II, & III Brainpower Read More 0:00 / 0:00 Which tool would be most effective for mapping a target network? Vulnerability scanner In order to gain illegitimate access to a network, attackers often by-pass access control lists by ____________________. Spoofing Which...

(Answered 2022) ANA 442 Final Exam 100% Verified Alzheimer's prevalence 1/20 by 65, 1/2 by 85, most prevalent neurodegenerative disease Impairments from AD memory, cognition, other behaviors Defined by atrophy, loss of neurons, loss of connections Locations of plaques and tangles intracellular tangles, extracellular plaques seen in Cortex, hippocampus, amygdala Neurofibrillary tangles hyperphosphorylated tau microtubule associated protein messes up axonal transport AB plaques be...