N5315 ADV. PATH. ACTION POTENTIALS EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS GRADED A++ LATEST UPDATE

N5315 ADV. PATH. ACTION POTENTIALS EXAM QUESTIONS

AND ANSWERS WITH COMPLETE SOLUTIONS GRADED A++

LATEST UPDATE


action potential

Excitable calls transmit information to on another

action potential

occurs in nerve and all muscle cells

Alteration in Action Potential

Neurologic disease, muscle disease or electrolyte imbalances

cell membrane

A cell structure that controls which substances can enter or leave the cell.

cell membrane

Provides structure, protection, regulates cell activity (receiving signals, transport in and

out, cell to cell interactions)

cell membrane composition

phospholipids, cholesterol, glycoprotein

Phospholipids

Repairs cell membrane by folding in on self and forming sealed compartment

Cell Membrane is highly permeable to

lipid soluble- carbon dioxide, oxygen, fatty acids, steroid hormones

Cell membrane is not permeable to

, water soluble- ions, glucose, and amino acids

Cell membrane needs

Protein for homeostasis

transmembrane proteins

span entire cell and in contact with extracellular and intracellular compartments

transmembrane proteins

Ligand-binding receptors, transport proteins

ligand-binding receptors

bind with hormones and neurotransmitters

transport proteins

Na+-K+ ATPase, pores, ion channels, cell adhesion molecules and GTP Binding

proteins (G proteins)

Na+/K+ ATPase

Main protein for EC Na+ and IC K+ (needed for cell excitation and membrane

conductivity)

Na+/K+ ATPase

Pump for action potential

Na+ concentration

greater outside cell

K+ concentration

greater inside the cell

Na+/K+ ATPase