If L = load, F = fulcrum, and E = effort, what type of lever system is described as LEF?

These cells in the CNS have cilia that move in order to circulate cerebrospinal fluid.

What does excess postexercise oxygen consumption represent?

79. Define motor unit, muscle twitch and tetanus.  Explain how skeetal muscles are able to produce smooth, graded contractions from a muscle twitch using summation and recruitment?

Meningitis can be caused by infection of the central nervous system by bacteria. Which cells would be most responsible for removing the infection?

When a muscle is unable to respond to stimuli temporarily, it is in which of the following periods?

When a neurotransmitter like acetylcholine is acting in an excitatory manner which of the following is likely a result of the acetylcholine acting on the postsynaptic cell?

Nerve impulses leading to the skeletal muscle carry information to direct movement. The nerve fibers sending these signals will most likely belong to which division of the nervous system?

If a postsynaptic cell is stimulated to threshold by temporal summation this implies that ________.

During the relative refractory period of an action potential, a larger than normal stimulus is needed to cause another action potential. This is due to the fact that ________.