Nervous Tissue Flashcards
What makes up the central nervous system?
brain, spinal cord
What makes up the peripheral nervous system?
cranial nerves, spinal nerves, ganglia
What are the two components of the functional nervous system?
sensory, motor
What part of the functional nervous system contains receptors and transmits info from receptors to the CNS?
sensory nervous system
What part of the functional nervous system transmits info from the CNS to the rest of the body and sends motor info to effectors?
motor nervous system
What type of sensory receives sensory info from skin and special senses (i.e. touch, vision, taste, hearing, etc.) and is what you are aware of?
somatic
What type of sensory receives sensory info from viscera (i.e. blood vessels, organs) and is what you are not aware of?
visceral
What type of motor is voluntary and innervates the skeletal muscles?
somatic
What type of motor is involuntary and innervates cardiac muscle, smooth muscle, and glands?
autonomic
What is the term for the functional cells of nervous tissue?
neurons
Neurons have a _____ metabolic rate
high
Neurons rely on a constant supply of _____ and _____
glucose, oxygen
Neurons have ____ longevity
extreme
Neurons can ____ but cannot _____
change, divide
Neuron change is neurons _____ themselves
repairing
A ______ neuron carries sensation from the skin
unipolar
The parts of a unipolar neuron are _____, _______, _______, and ___ _____
dendrites, peripheral process, central process, cell body
Dendrites of a unipolar neuron are embedded in the _____
skin
The ____ process of the unipolar neuron transfers the impulses from the skin to the cell body
peripheral
The _____ process of the unipolar neuron carries the impulses from the cell body to the CNS
central
The ______ neurons contain an axon
multipolar
The parts of a multipolar neuron are _____, ___ ____, and _____
dendrites, cell body, axons
_____ neurons carry impulses from neurons to other neurons
multipolar
The axon of the multipolar neurons carries _____ away from the cell body
impulses
A ____ sheath covers the axon
myelin
The cross section of the ____ _____ contains gray and white matter
spinal cord
Gray matter is in the shape of a _____
butterfly
____ matter contains the axons of myelinated interneurons and does not contain cell bodies
white
The ____ horn is on the anterior side of the spinal cord
ventral
The ____ horn is on the posterior side of the spinal cord
dorsal
____ neurons have receptors in the skin
unipolar
Impulses traveling from the unipolar receptors in skin is called _____/_____ transmission
afferent, input
A collection of cell bodies from unipolar neurons that create a bump is called ___ ____ _____
posterior root ganglion