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Chemoreceptor nerve and type a glomus cell activity following hypoxia, hypercapnia, or anoxia: A morphological study in the rat carotid body

1981; Academic Press; Volume: 77; Issue: 2 Linguagem: Inglês

10.1016/s0022-5320(81)80040-8

1878-2345

John T. Hansen,

Sleep and Wakefulness Research

In the rat carotid body, afferent (sensory) axons account for about 95% of the nerve endings on glomus cells. Many of these sensory nerve endings, whose nerve cell bodies are in the petrosal ganglion, are presynaptic as well as postsynaptic to glomus cells. Typical of presynaptic endings, these carotid body sensory nerve endings possess 60-nm synaptic vesicles and synaptic active zones. Upon stimulation by hypoxia (10% O 2 -90% N 2 ), hypercapnia (10% CO 2 in air), or anoxia (100% N 2 ), these nerve endings showed a significant decrease ( P P