Flashcards in Ch 10 Deck (37)
The parasympathetic division of the autonomic nervous system stimulates the body's vegetative activities such as digestion, urination, and defecation
Over 60% of all brain cells are neurons
The first nerve cell receiving an impulse directly from a receptor is called a motor or efferent neuron
The action potential moves in both directions down a nerve fiber
An unmyelinated nerve fiber conducts an impulse over its entire length with a slower rate of conduction than that of a myelinated fiber.
The ____ system is the body's control center and communication network.
The _____ nervous system consists of the brain and spinal cord.
Neurons that convey information from the brain and spinal cord to muscles and glands are called ___ neurons.
Efferent or Motor
The parasympathetic division of the autonomic nervous system uses the neurotransmitter ____ at nerve endings
A bundle of nerve cells or fibers is called a ____
Star-shaped cells that form a supporting network in the brain and spinal cord are called ____.
Cells that line the fluid-filled ventricles of the brain, some of which produce cerebrospinal fluid, are called____
Myelin sheaths surrounding nerve fibers in the peripheral nervous system are produced by _____
Neurons that have several dendrites and one axon are called ____ neurons
Most sensory neurons are ____ neurons
The final nerve cell that receives the impulse an brings about the reaction to the original stimulus is called the motor or ____ neuron.
Sodium-Potassium pumps restore the resting membrane potential following an action potential, a process known as ____.
Terminal branches of an axon are anchored close to the ends of the dendrites of another neuron at regions called ____
The chemicals that transmit signals across the synapse are called
Most synapses in our bodies use the ____ neurotransmitter
Areas of the nervous system known as ____ consist of nerve cells bodies and dendrites
A bundle of fibers located outside the central nervous system is called a
Descending tracts of the central nervous system that conduct impulses down the spinal cord are concerned with ____ functions
The spinal cord is a continuation of the ____
Nerve cell bodies found outside the central nervous system are called____
A bundle of fibers inside the central nervous system is called a
The outermost spinal meinx is called the
The space that seperates the mininges from the vertebrae is called the ___ space
Valium is an example of a