When voltage-gated sodium channels are open, sodium flows _____________ the neuron, making the inside of the cell more _______________.

The least movable joints are _____________ joints, which occur when two bones fuse together.

Nerves are __________ of the nervous system.

In an ECG pattern, the T wave is caused by

Interleukin-1 secretion causes

Which of the following is most life threatening?

T lymphocytes are responsible for

In an ECG pattern, the T wave is caused by

Choose the item that would provoke a cell to produce interferons.

Interleukin-1 secretion causes