Exam 13: B: Nervous System Cells

When current leaps across an insulating myelin sheath from node to node,the type of impulse conduction is called:

If there were lesions on a bundle of myelinated fibers,what would occur?

The parasympathetic nervous system is part of the _____ pathway of the _____ nervous system.

What type of neurons are always sensory receptors?

Match each term with its definition or description. -tiny bulge at the end of the presynaptic cell

Match each of the following cell types with its corresponding description. -have the capability of phagocytosis

A synaptic knob would be located on a(n):

Match each part of the nervous system with its corresponding description. -consists of nerves that lie in the periphery of the nervous system

Match each part of the nervous system with its corresponding description. -sometimes called the "rest-and-repair" division

Explain how a neuron can repair itself.What increases the likelihood of repair; what decreases the likelihood of repair? If repair is not possible,what other options are possible to innervate the effector organ?

The fastest nerve fibers in the body can conduct an impulse that is how much faster than the slowest fibers in the body?

Which of the following is not a factor in the velocity of nerve impulse conduction?

Along a neuron,the correct pathway for impulse conduction is:

Match each of the following cell types with its corresponding description. -produce the myelin sheath around nerve fibers in the central nervous system

Dopamine,epinephrine,and norepinephrine are classified as:

Match each part of the nervous system with its corresponding description. -subdivision that carries information from the CNS to skeletal muscle

Match each part of the nervous system with its corresponding description. -subdivision of the efferent division that transmits information to smooth muscle,cardiac muscle,and glands

Which of the following is not true of a three-neuron ipsilateral reflex?

Dendrites conduct impulses _____ cell bodies.

Match each term with its definition or description. -distal tips of these nerve fibers end in branches called telodendria