3 Propagation Of The Action Potential - Quantitative Human Physiology | Biology+

Course

Other

Study Pack

Set 1: Physical Foundations Ii: Electrical Force Potential Capacitance and Current

Set 2: Chemical Foundations I: Chemical Energy and Intermolecular Forces

Set 3: Chemical Foundations Ii: Concentration and Kinetics

Set 4: Diffusion

Set 5: Electrochemical Potential and Free Energy

Set 6: Cell Structure

Set 7: Dna and Protein Synthesis

Set 8: Protein Structure

Set 9: Biological Membranes

Set 10: Passive Transport and Facilitated Diffusion

Set 11: Active Transport: Pumps and Exchangers

Set 12: Osmosis and Osmotic Pressure

Set 13: Cell Signaling

Set 14: ATP Production I: Glycolysis

Set 15: Atp Production Ii: Tca Cycle and Oxidative Phosphorylation

Set 16: Atp Production Iii: Fatty Acid Oxidation and Amino Acid Oxidation

Set 17: Origin of the Membrane Potential

Set 18: The Action Potential

Set 19: Propagation of the Action Potential

Set 20: Skeletal Muscle Mechanics

Set 21: Contractile Mechanisms in Skeletal Muscle

Set 22: Neuromuscular Junction and Ec Coupling

Set 23: Muscle Energetics Fatigue and Training

Set 24: Smooth Muscle

Set 25: Organization of the Nervous System

Set 26: Cells Synapses and Neurotransmitters

Set 27: Cutaneous Sensory Systems

Set 28: Spinal Reflexes

Set 29: Balance and Control of Movement

Set 30: the Chemical Senses

Set 31: Hearing

Set 33: Autonomic Nervous System

Set 34: Overview of the Cv System and Blood

Set 35: Plasma and Red Blood Cells

Set 36: White Blood Cells and Inflammation

Set 37: The Heart As a Pump

Set 38: Cellular Basis of Cardiac Contractility

Set 39: the Cardiac Function Curve

Set 40: Vascular Function: Hemodynamics

Set 41: Microcirculation and Solute Exchange

Set 42: Regulation of Perfusion

Set 43: Integration of Cardiac Output and Venous Return

Set 44: Regulation of Arterial Pressure

Set 45: Mechanics of Breathing

Set 46: Lung Volumes and Airway Resistance

Set 47: Gas Exchange in the Lung

Set 48: Oxygen and Carbon Dioxide Transport

Set 49: Acid Base Physiology I Bicarbonate Buffers and Respiratory Compensation

Set 50: Control of Ventilation

Set 51: Anatomy and Renal Overview

Set 52: Glomerular Filtration

Set 53: Tubular Reabsorption and Secretion

Set 54: Concentration and Dilution of Urine

Set 55: Mouth and Esophagus

Set 56: The Stomach

Set 57: Intestinal and Colonic Motility

Set 58: Pancreatic and Biliary Secretion

Set 59: Digestion and Absorption of the Macronutrients

Set 60: Energy Balance and Regulation of Food Intake

Set 61: General Principles of Endocrinology

Set 62: Hypothalamus and Pituitary Gland

Set 63: The Thyroid Gland

Set 64: The Endocrine Pancreas

Set 65: The Adrenal Cortex

Set 66: The Adrenal Medulla

Set 67: The Calcitropic Hormones

Set 68: Calcium and Phosphorus Homeostasis Ii

Set 69: Female Reproductive Physiology

Set 3 3 Propagation Of The Action Potential

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Set 3 3 Propagation Of The Action Potential

(Multiple Choice)

Free

The delay between an action potential in a soma and its appearance 30 cm down the efferent axon is 5 ms. The conduction velocity is

A) 6 mm s^-1
B) 6 cm s^-1
C) 150 cm s^-1
D) 15 m s^-1
E) 60 m s^-1

Answer

(Multiple Choice)

Free

The conduction velocity is increased by

A) Shortening the time at which a remote patch of membrane is excited to threshold
B) Increasing capacitance by insulating membranes
C) Increasing axial resistance to current flow
D) Decreasing transmembrane resistances
E) None of the above

Answer

(Multiple Choice)

Free

W e inject a slightly depolarizing current into an axon at x = 0 cm continuously monitor the potential at x = 5 cm away. At steady state, the resting membrane potential is -70 mV. At the point of injection,the potential is -60 m V and at x = 5 cm away it is -66.3 mV. W hat is the space constant?

A) 2.5 cm
B) 5.0 cm
C) 10.0 cm
D) 15.0 cm
E) 20.0 cm

Answer