Nerve06/autonomic nervous system and synapses/exception to the dual innervation
The following organs do NOT receive dual-innervation from both sympathetic and parasympathetic nervous systems. They are innervated only by the one indicated.
arterial wall smooth muscle: sympathetic
pupillary constrictor: parasympathetic
pupillary dilator: sympathetic
sweat glands: sympathetic
arrector pili muscle: sympathetic
adrenal medulla: sympathetic pre-ganglionic nerve (detail in another page)
Challenge Quiz
The arterial wall smooth muscle does does not receive dual-innervation of the autonomic nerves.
The arterial wall smooth muscle receives innervation only from the sympathetic parasympathetic nervous system.
The pupillary constrictor does does not receive dual-innervation of the autonomic nerves.
The pupillary constrictor receives innervation only from the sympathetic parasympathetic nervous system.
The pupillary dilator does does not receive dual-innervation of the autonomic nerves.
The pupillary dilator receives innervation only from the sympathetic parasympathetic nervous system.
The sweat gland does does not receive dual-innervation of the autonomic nerves.
The sweat gland receives innervation only from the sympathetic parasympathetic nervous system.
The arrector pili muscle does does not receive dual-innervation of the autonomic nerves.
The arrector pili muscle receives innervation only from the sympathetic parasympathetic nervous system.
The adrenal medulla does does not receive dual-innervation of the autonomic nerves.
The adrenal medulla receives innervation from the sympathetic parasympathetic pre-ganglionic post-ganglionic nerves.