Voltage gated k channels - Study guides, Class notes & Summaries

NSG 531 Advanced Pharmacology Exam 3 Questions With Correct Answers Latest Updated 2024/2025 / Graded A+. what is the difference between cardiac myocyte action potential and that of the CNS or ANS? - ANSWER nerve cell action potential is very short cardiac action potential is much longer they are longer to have adequate filling time in order to get a good contraction for a reasonable bolus of blood the only way this can happen is if the action potential is longer this will also mean that t...

Neuron Structure - dendrites, cell body, axon dendrites - short, highly branched signal receptive regions of the nerve cell. Convey incoming message toward cell bodies each nerve cell (neuron) has only one - axon axon - impulse generating and conducting region of neuron myelin sheath - Whitish fatty protein layer that protects and electrically insulates the axon. Increases the speed of transmission of nerve impulses myelin sheath is only associated with - axons, not dendrites what determ...

Straighterline A&P II Quiz 2 Latest Version Graded A+ What event(s) occur during the QRS complex of an ECG? a. depolarization of the atria b. repolarization of the ventricles c. depolarization of the atria and repolarization of the ventricles d. depolarization of the ventricles and repolarization of the atria d. depolarization of the ventricles and repolarization of the atria Blood in the pulmonary veins returns to the a. right atrium. b. left atrium. c. right ventricle. d....

What does it mean when the plasma membrane of the neuron is polarized? - Answer - When there is a separation of charge across the membrane. Specifically, a polarized neuron is one where the inside is more negative and the outside is more positive. This is the state when the neuron is at rest. What gives rise to the gradient across the membrane? - Answer - The chemical and voltage gradients of potassium and sodium. Potassium wants to move from inside to outside. Sodium wants to move from out...

ap chpt 11know fig 11.1 - correct answer 11.3 - correct answer 11.5 - correct answer The resting membrane potential is maintained by Na+-K+ pumps that actively transport ? into and ? out of the cell. The membrane is more permeable to ?. The concentration of ? is higher outside than inside the cell. The concentration of ? is higher inside than outside the cell. - correct answer 1. k+, na+ 2. k+ 3. Na+ 4. k+ Ions are unequally distributed across the plasma membrane of all cell...

BIOL 3240 Exam 1 | Questions and Answers (Complete Solutions) What are the two major cell types in the brain? Neurons; glial cells What are some ways cell types can be defined? morphology; transcription profile; cell properties, function; context Two characteristics of neurons asymmetrical, excitable There are ____ major types of glial cell five A neuron is a post ____ cell Mitotic Neurons are both _____ and _____ excitable chemically, electrically _________ neurons have only one process that ...

WSU BIO 106 PRACTICE EXAM 4 The neuron: a) Has high internal concentrations of Na+ b) Generally has a simple shape with low surface area c) has dendrites that send signals to other neurons d) Has vesicles filled with neurotransmitter e) Has a membrane potential that is +50 mV at rest - d Which of the following is true about neurons: a) Intracellular fluid (inside the cell) - primary cation is Ca+, Na+ is low b) Extracellular fluid (outside the cell) - primary cation is K+, Na+ is lo...

When the presynaptic cell contacts a muscle cell, the synapse area is called a motor end plate. - ANSWER TRUE Briefly explain why the action potential flows only from the axon hillock to the terminal web. - ANSWER During the course of an action potential there is a refractory period that makes sure the action potential can't trigger backwards by the use of caps on gated sodium channels. The caps close and keeps the action potential flowing in one direction. How do the glial cells (i.e., m...

TEST BANK NEUROSCIENCE Exploring the Brain (2015, WOLTERS KLUWER) MARK F. BEAR, BARRY W. CONNORS, MICHAEL A. PARADISOWhy are a broad perspective and an interdisciplinary approach required for understanding the brain? Choose the correct option. A) Understanding the brain is a focused area in natural science with the brain serving as the common point of focus. B) Understanding the brain requires knowledge about many things, from the structure of the water molecule to the electrical and chemical p...

Straighterline A&P II Quiz 2 with Complete Solutions What event(s) occur during the QRS complex of an ECG? a. depolarization of the atria b. repolarization of the ventricles c. depolarization of the atria and repolarization of the ventricles d. depolarization of the ventricles and repolarization of the atria -Answer-d. depolarization of the ventricles and repolarization of the atria Blood in the pulmonary veins returns to the a. right atrium. b. left atrium. c. right ventricle. d. le...