Dorsorostral snout muscles in the rat subserve coordinated movement for whisking and sniffing

Anat Rec (Hoboken). 2012 Jul;295(7):1181-91. doi: 10.1002/ar.22501. Epub 2012 May 29.

Abstract

Histochemical examination of the dorsorostral quadrant of the rat snout revealed superficial and deep muscles that are involved in whisking, sniffing, and airflow control. The part of M. nasolabialis profundus that acts as an intrinsic (follicular) muscle to facilitate protraction and translation of the vibrissae is described. An intraturbinate and selected rostral-most nasal muscles that can influence major routs of inspiratory airflow and rhinarial touch through their control of nostril configuration, atrioturbinate and rhinarium position, were revealed.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Exploratory Behavior / physiology*
  • Facial Muscles / physiology*
  • Male
  • Movement / physiology*
  • Nose / innervation*
  • Rats
  • Rats, Wistar
  • Vibrissae / physiology*