Which of these is true of the endocrine system?

_________ prevent pathogens that cross the blood-brain barrier from infecting and killing neurons of the brain.

As you walk through the parking lot after a thunderstorm, you slip on some water and hit your head. You have a ringing in your ears for several days after. You most likely are suffering from a concussion on your __________.

Which of these will increase the oxygen availability of a muscle?

Which of these is NOT an electrolyte?

Epithelial tissue is associated with __________.

The portion of the eye that catches light to prevent it from bouncing around after it has entered the eye is the _________.

Which of these is NOT associated with a general sense?

Someone grabs you by the arm as you start to walk away and you feel a deep pressure. This is due to the stimulation of ____________.

An increase in blood glucose levels following a meal results in the pancreas secreting insulin. Insulin triggers the liver to take up glucose and convert it to glycogen. As blood glucose levels come down, the pancreas stops secreting insulin. This is an example of a _______ system.