Nerve & Muscle- Flow of Information Flashcards
What are the two types of information transmitted in the nervous system?
Somatic and autonomic
What is somatic information?
The stuff we are aware of and have control over
What is the two types of somatic information?
Somatic efferent (motor) and somatic afferent (sensory)
What is somatic efferent information?
Voluntary muscle control
What is somatic afferent information?
Sensory information we are aware of
What is autonomic information?
The stuff we aren’t aware of and have no control over
What is the two types of autonomic information?
Autonomic efferent (motor) and autonomic afferent (sensory)
What is autonomic efferent information?
Involuntary muscle control
What is autonomic afferent information?
Sensory information that we don’t know about
How many neurons are between the brain and effector in the somatic efferent division?
2
What are the two neurons called in the somatic efferent division?
Upper motor neuron and lower motor neuron
Where is the cell body of the upper motor neuron?
In the brain (CNS)
Where is the axon of the upper motor neuron?
In the spinal cord (CNS)
What is the myelination status of the upper motor neurons axon?
Myelinated
Where is the cell body of the lower motor neuron?
In the spinal cord (CNS)
Where is the axon of the lower motor neuron?
In the spinal nerve (PNS)
What are effectors?
Things the nerve goes to and controls
What is the effector of the somatic efferent division?
Skeletal muscle fibres
What is the neurotransmitter of the somatic efferent division?
Acetylcholine
Where is acetylcholine released in the somatic efferent division?
At the synaptic cleft of the lower motor neuron
What is the pre-synaptic cell?
The lower motor neuron
What is the post-synaptic cell?
The effector/muscle
Where do the pre and post synaptic cells meet?
At the neuromuscular junction
What control is the autonomic efferent nervous system under?
Involuntary
What are the divisions of the autonomic efferent nervous system?
Sympathetic and Parasympathetic
What are the effectors of the autonomic efferent nervous system?
Smooth muscle, cardiac muscle, glands, adipose (fat) tissue
How many neurons are between the brain and the effector in the autonomic efferent nervous system?
3
Where is the cell body of neuron #1?
In the brain (CNS)