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36 Cards in this Set

  • Front
  • Back
somatic nervous system
controls only 1 type of effector organ, which is skeletal muscle.
motor neurons
The somatic nervous system has only a single type of efferent neuron: ______ _______.
voluntary
The somatic nervous system is a _________ nervous system
single
A _______ motor neuron travels from the CNS to a skeletal muscle cell.
ventral horns
Motor neurons originate in the ________ _____ of the spinal cord and receive input from muliple sources, including afferents, the brainstem, and the cerebral cortex.
single
A ______ motor neuron innervates many muscle cells, but each muscle fiber is innervated by only one motor neuron.
motor unit
A motor neuron plus all the muscle fibers it innervates is a ______ _____.
nueromuscular junction
Each branch of a motor neuron synapses w/ a skeletal muscle fiber at a single highly specialized central region of the fiber called the ______________ ___________.
terminal boutons
The axon terminals of the motor neurons, called _________ _______, store and release acetylcholine, the only neurotransmitter in the somatic nervous system.
motor end plate
Opposite these terminal boutons is a specialized region of the muscle fibers plasma membrane called the ______ ___ ______, which has invaginations containg large numbers of acetylcholine receptors.
Decreases heart rate
What is the effect of the SA node in the parasympathetic nervous system?
none
What is the effect of the arterioles to most of body in parasympathetic nervous system?
none
What is the effect of the arterioles to skeletal muscle in the parasympathetic nervous system?
none
What is the effect of the arterioles in brain in the parasympathetic nervous system?
contraction
What is the effect of the bronchial muscle in the parasympathetic nervous system?
stimulates secretion
What is the effect of the bronchial glands in the parasympathetic nervous system?
stimulated
What is the effect of secretions in the parasympathetic nervous system?
stimulates secretion
What is the effect of the sweat glands of the skin in the parasympathetic nervous system?
Contraction of circular muscle (pupillary constriction)
What is the effect of the iris muscles (pupil size) in the parasympathetic nervous system?
contraction for near vision
What is the effect of the ciliary muscles (accommadation) in the parasympathetic nervous system?
increases heart rate
What is the effect of the SA node in the sympathetic nervous system?
vasoconstriction
What is the effect of the arterioles to most of the body in the sympathetic nervous system?
vasoconstriction & vasodilation (E)
What is the effect of the arterioles to skeletal muscles in the sympathetic nervous system?
none
What is the effect of the arterioles to brain in the sympathetic nervous system?
inhibited
What is the effect of the secretion in G.I. tract in the sympathetic nervous system?
stimulates secretion
What is the effect of the sweat gland in the skin in the sympathetic nervous system?
contraction of radial muscle (pupillary dilation)
What is the effect of the iris muscles (pupil size) in the sympathetic nervous system?
relaxation for far vision (small effect)
What is the effect of the ciliary muscles (accommodation) in the sympathetic nervous system?
B1
What adrenergic receptor class is the SA node of the heart?
A1
What adrenergic receptor class are the arterioles of most of body?
A1
What adrenergic receptor class is the arterioles to skeletal muscles?
B2
What adrenergic receptor class is the arterioles to brain?
a2
What adrenergic receptor class is the secretions of G.I. tract?
a1, muscarinic
What adrenergic receptor class is the sweat glands?
a1
What adrenergic receptor class is the iris muscles (pupil size)?
b2
What adrenergic receptor class is the ciliary muscles (accommodation)?