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nervous system
Stack #100453
Question | Answer |
---|---|
site of origin for autonomic nervous system | brain or lateral horn of spinal cord |
number of neurons from origin in CNS to effector organ | two-neuron chain preganglionic and postganglionic |
organs innervated in the autonomic nervouos system | cardiac muscle, smooth muscle, exocrine and some endocrine glands |
type of innervation of ANS | most effector organs dually innervated by the two antagonistic branches of this system (sympathetic and parasympathetic) |
neurotransmitter at effector organs for the ANS | may be acetylocholine (parasym) or NE at the sym terminals |
effects on Effector organs in the autonomic nervous system | either stimulation or inhibition (antagonistic actions of two branches) |
what type of control does the ANS have | under involuntary coontrol; may be voluntarily controlled with biofeedback techniques adn training |
what are the highere centers involved in control in the ANS | spinal cord, medulla, hypothalamus, prefrontal association cortex |
what is the Site of origin for the somatic nervous system | ventral horn of spinal cord for most; those supplying muscles in head orginate in brain |
number of neurons from origin in CNS to effector organ in the somatic nervous system | single neuron (motor neuron) |
organs the somatic nervous system innervates | skeletal muscle |
type of innervation in the somatic nervous system | effector organs innervated only by motor neurons |
neurotransmitter at effector organs in the somatic nervous system | only acetylcholine |
effects on effector organs in the somatic nervous system | stimlation only (inhibition possibly only centrally through IPSP on cell body of motor neuron |
types of control in the somatic nervous system | subject to voluntary control; much activity subconsciously coordinated |
higher centers involved in control in the somatic nervous system | spinal cord, motor cortex, basal nuclei, cerebellum, brain stem |