Laryngeal patency and expiration reflex following focal cold block of the medulla in the cat

Title:

Laryngeal patency and expiration reflex following focal cold block of the medulla in the cat

Creator:

Jakuš, J., Stránsky, A., Poliaček, I., and Baráni, H.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:27ae3303-a74f-4aa3-942f-17a2c74e391b
uuid:27ae3303-a74f-4aa3-942f-17a2c74e391b

Subject:

respiratory control, laryngeal resistance, expiration reflex, ventral respiratory group, and focal cold block of medulla

Type:

article, model:article, and TEXT

Description:

The involvement of the intermediate area and Botzinger complex (BOT) of the rostral ventral respiratory group (r-VRG) in laryngeal control and generation of the expiration reflex were studied in anaesthetized non-paralyzed cats. Focal cooling (to 20 °C) of the nucleus paraambigualis (NPA) caused changes in the frequency and timing of breathing with the concomitant rise in laryngeal resistance. Cooling of the nucleus ambiguus resulted in a consistent drop in laryngeal resistance. Alterations in timing and intensity of breathing but no changes in laryngeal patency were found during cooling of the BOT. The expiration reflex was inhibited by cooling of either the NPA or BOT. The role of these medullary regions in the control of laryngeal patency and central integration of the expiration reflex is discussed.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 1996 Volume:45 | Number:2

Harvested from:

CDK

Metadata only:

false