Ch 11: organization of nervous tissues Flashcards
Receiving sensory input
Monitor internal and external stimuli
Integrating information
The brain and spinal cord processes the sensory input and initiate responses
What are the three central nervous system’s that are on the midline?
Brain, brain stem, and spinal cord
What are the three peripheral nervous system?
Cranial nerves, spinal nerves, peripheral nerves
Sensory receptors of PNS
Endings of neurons specialize cells that detect temperature pain and etc
What is another name for sensory of PNS?
Afferent
What is another name of motor for PNS?
Efferent
What does sensory of PNS do?
- sensory: afferent *
Transmit action potential from receptors to central nervous system 
What does motor of PNS do?
- motor: efferent *
Transmit action potential from central nervous system to detect muscles glands 
How many pairs are in the cranial nerves
12
How many pairs are in the spinal nerves?
31
Peripheral nerves
Sciatic and radial nerves
Somatic nervous system characteristics
Voluntary, mostly, and voluntary reflux - *- from CNS to skeletal muscles
*- Voluntary
*-Single neuron system 
What is a synapse?
Junction of Neuro sell with another cell
Autonomic nervous system characteristics
Involuntary
-From Salinas to smooth muscle, cardiac muscle, and glands
-Subconscious or involuntary
-two neuron system
What is the two neurons system and autonomic nervous system?
First motor neuron(preganglionic neuron), CNS to ganglion
-Second (postganglionic neuron), from ganglion to effector
Characteristics of sympathetic, autonomic nervous system
From thoracic and lumbar region
-Thoracolumbar
- pre G neuron is short
- post G neuron is long
Characteristic of parasympathetic, autonomic nervous system
From cranial and sacral region
-(craniosacral)
-pre G neuron is long
- post G neuron is short
What is a neuron?
Nerve cell
Sensory neuron
Action potential moves towards CNS
Motor neuron
Action potential moves away from CNS
Interneurons
With in CNS from one neuron
Multipolar
Most neurons and CNS, motor neurons
Bipolar neuron
Sensory and retina of eye and nose
Unipolar
Single process divides into two branches to periphery, has dendrite like sensory receptors
Unipolar structure
Bipolar structure
Multipolar structure
