Refer to the image above. 1. Name the structure at the end of “A.” 2. Name the special feature at the end of “B.”

   Refer to the image above. 1. Name the structure at the end of “A.” 2. True or False, this structure “A” is not keratinized.

Unmyelinated fibers use ________ conduction, which propagates the action potential down the axon as voltage-gated sodium channels open up next to each other.

An action potential causes calcium ions to diffuse from the __________ into the __________.

 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?