Indeed, the TNF receptors, namely, TNF-r1 and TNF-r2, are expressed, respectively, in the typeI glomus cell
and endothelial cell of the cat carotid body .
The hypoxia response element within the carotid body is the glomus cell
. [K.sup.+] channels on the plasmatic membrane of the glomus cells
are inhibited during hypoxia, promoting cell depolarisation, [Ca.sup.2+] influx, and transmitter release.
There is increase in intracapsular pressure due to contraction of myofilaments of glomus cell
and this increase in pressure causes pain, which is carried by unmyelinated nerve fibres.
Benign tumors consisting of glomus cells
may be subdivided into two types: glomus tumors and glomuvenous malformations or glomangiomas.
Histologically, this is a well-circumscribed lesion, characterised by solid aggregates of glomus cells
around small capillary sized vessels in a myxoid or hyalinised stroma.
Glomus tumor is a mesenchymal tumor comprising smooth muscle cells known as glomus cells
; it is responsible for thermoregulation (1).
of the carotid body, such as chromaffin cells of fetal adrenal medulla, are specialized in sensing local oxygen tension in mammals  and can undergo anatomical changes if exposed to chronic hypoxia .