Nervous System - MCAT with verified answers

Nervous System - MCATSoma - correct answer neuron cell body Oligodendrocytes - correct answer cells that produce MYELIN in CENTRAL NERVOUS SYSTEM Schwann Cells - correct answer cells that produce MYELIN in the PERIPHERY Resting Membrane Potential - correct answer about -70mV inside of neuron is negative relative to outside Discuss ion concentrations inside neuron. - correct answer [K+] is high inside neuron [Na+] is low inside neuron Discuss ion concentrations outside neuron - correct answer [K+] is low inside neuron [Na+] is high inside neuron K/Na ATPase - correct answer important for restoring chemical gradient after action potential has been fired transports 3 Na+ out of cell for every 2 K+ into the cell at the expense of 1 ATP both Na and K are moved again their gradients thus ATP must be consumed to restore resting potential