Podcast
Questions and Answers
What is excitability in the context of excitable membranes?
What is excitability in the context of excitable membranes?
- The ability of tissues to generate electrical signals (correct)
- The ability of tissues to resist external stimuli
- The ability of tissues to block electrochemical signals
- The ability of tissues to store electrical impulses
Which of the following tissues are considered excitable tissues?
Which of the following tissues are considered excitable tissues?
- Blood vessels and Bones
- Kidneys and liver
- Nails and hair follicles
- Nerves and Muscles (correct)
What is the typical resting membrane potential (RMP) value for skeletal muscles?
What is the typical resting membrane potential (RMP) value for skeletal muscles?
- -50 mV
- -60 mV
- -90 mV (correct)
- -70 mV
What contributes to the resting membrane potential of excitable tissues?
What contributes to the resting membrane potential of excitable tissues?
What does it mean when the inner surface of a nerve fiber is negatively charged during rest?
What does it mean when the inner surface of a nerve fiber is negatively charged during rest?
What role do passive (non-gated) channels play in the resting membrane potential?
What role do passive (non-gated) channels play in the resting membrane potential?
During Repolarization, the M gate of voltage-gated Na channels is:
During Repolarization, the M gate of voltage-gated Na channels is:
At rest, the n-gate of voltage-gated K channels is:
At rest, the n-gate of voltage-gated K channels is:
What is the main cause of the Resting Membrane Potential (RMP)?
What is the main cause of the Resting Membrane Potential (RMP)?
What type of potential results from stimulation by an ineffective or subminimal stimulus?
What type of potential results from stimulation by an ineffective or subminimal stimulus?
What is the significance of the Sodium & Potassium Pump (Na-K pump)?
What is the significance of the Sodium & Potassium Pump (Na-K pump)?
Where does the receptor potential typically occur?
Where does the receptor potential typically occur?
What type of channels are responsible for Action Potential?
What type of channels are responsible for Action Potential?
What happens to the h gate of voltage-gated Na channels during Depolarization?
What happens to the h gate of voltage-gated Na channels during Depolarization?
Which type of potential propagates along nerve fibers without decrement and produces a response?
Which type of potential propagates along nerve fibers without decrement and produces a response?
What happens during Rapid Depolarization in an Action Potential?
What happens during Rapid Depolarization in an Action Potential?
What occurs during Repolarization phase of an Action Potential?
What occurs during Repolarization phase of an Action Potential?
What initiates the opening of Voltage-Activated Na channels in Slow Depolarization?
What initiates the opening of Voltage-Activated Na channels in Slow Depolarization?
What is the role of the Na-K pump?
What is the role of the Na-K pump?
What is the latent period in the monophasic action potential?
What is the latent period in the monophasic action potential?
What is the primary cause of negative after potential in nerve cells?
What is the primary cause of negative after potential in nerve cells?
Which ion is transported out of the cell by the Na-K pump?
Which ion is transported out of the cell by the Na-K pump?
Where is the reference electrode typically placed in recording action potentials?
Where is the reference electrode typically placed in recording action potentials?
What is the main function of the M gate (activation gate) of voltage-gated Na channels?
What is the main function of the M gate (activation gate) of voltage-gated Na channels?
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