Transmission. Flashcards
nerves are high _____
excitable
nerve impulses are always _____ _____ regardless of the stimulus
the same
what is required to separate opposite charges across a membrane?
energy
energy is _____ when charges move toward one and other
liberated
if opposite charges are separated the system has_____ ______
potential energy
What are the 2 types of ion channels
Leakage
gated
Name the 3 types of gated channels
Chemically gated
Voltage-Gated
Mechanically Gated
what is the second name for chemically gated channels
ligand-gated
Chemically gated channels are located where?
what do they respond to?
dendrites and cell bodies of a neuron
neurotransmitters
Ions flow down their ______ _____
concentration
flowing down a concentration gradient means?
ions flow to areas of low concentration
Chemically (ligand) gated ion channels are involved in what type of potentials?
graded potential
Voltage-gated respond to a voltage _____ _____ _____ threshold (voltage) aka they need a specific ____ or _____ to be reached
at a specific
voltage or charge
Voltage-gated channels are located near the _____ _____ of neurons and also along the _____ of neurons
axon hillock
axons
Voltage-gated channels are involved in ______ potentials
action