Unit 5 Phys Nervous Tissue, Part L IPSP and EPSP

Excitatory postsynaptic potential

What does EPSP stand for?

Inhibitory postsynaptic potential

What does IPSP stand for?

Excitatory postsynaptic potential (EPSP)

Term for a specific type of graded depolarization of the postsynaptic membrane which moves the membrane potential toward threshold. Results from opening ligand (chemically) gated channels allowing positive ions (Ex: Na+ or Ca2+) to move into the cell. Give the complete name and abbreviation in parenthesis.

Inhibitory postsynaptic potential (IPSP)

Term for a specific type of graded depolarization of the postsynaptic membrane which results in a hyperpolarization of the postsynaptic membrane, making it more difficult for the postsynaptic cell to reach threshold.- Results from opening ligand (chemically) gated ion channels in the membrane such as K+ (moving out) or Cl- (moving in) channels• Takes the membrane potential farther from threshold resulting in a hyperpolarization. Give the complete name and abbreviation in parenthesis.

Hyperpolarization; IPSP

A cell is at its resting membrane potential. It receives stimulation that allows negative charges (ex: Cl-) to flow into a cell and causes _________________ (depolarization, hyperpolarization, repolarization) and an ________________ (EPSP or IPSP).Answers separated by a semicolon _____________;________________

Hyperpolarization; IPSP

A cell is at its resting membrane potential. It receives stimulation that allows positive charges (ex: K+) to flow out of a cell and causes _________________ (depolarization, hyperpolarization, repolarization) and an ________________ (EPSP or IPSP).Answers separated by a semicolon _____________;________________

Depolarization; EPSP

A cell is at its resting membrane potential. It receives stimulation that allows positive charges (ex: Na+) to flow into a cell and causes _________________ (depolarization, hyperpolarization, repolarization) and an ________________ (EPSP or IPSP).Answers separated by a semicolon _____________;________________

Depolarization; EPSP

A cell is at its resting membrane potential. It receives stimulation that allows positive charges (ex: Ca2+) to flow into a cell and causes _________________ (depolarization, hyperpolarization, repolarization) and an ________________ (EPSP or IPSP).Answers separated by a semicolon _____________;________________