ArticleAnatomical record (Hoboken, N.J. : 2007)2015
Muscles involved in naris dilation and nose motion in rat.
Article in Anatomical record (Hoboken, N.J. : 2007), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 27 citations in OpenAlex.
- Describing the musculature of mystacial pads in harbour seals (Phoca vitulina) using diceCT.Journal of anatomy · 2025Article
- Behavioral correlates of fascicular organization: The confluence of muscle architectural anatomy and function.Anatomical record (Hoboken, N.J. : 2007) · 2025Review
- Article
- A brainstem circuit for the expression of defensive facial reactions in rat.Current biology : CB · 2023Article
- A change in behavioral state switches the pattern of motor output that underlies rhythmic head and orofacial movements.Current biology : CB · 2023Article
- Selective Denervation of the Facial Dermato-Muscular Complex in the Rat: Experimental Model and Anatomical Basis.Frontiers in neuroanatomy · 2021Article
- Functional brain stem circuits for control of nose motion.Journal of neurophysiology · 2019Article
- Coordination of Orofacial Motor Actions into Exploratory Behavior by Rat.Current biology : CB · 2017Article
- Whisking mechanics and active sensing.Current opinion in neurobiology · 2016Review
- Neural Control of the Upper Airway: Respiratory and State-Dependent Mechanisms.Comprehensive Physiology · 2016Review
- Article
- Circuits in the Ventral Medulla That Phase-Lock Motoneurons for Coordinated Sniffing and Whisking.Neural plasticity · 2016Review
- The Musculature That Drives Active Touch by Vibrissae and Nose in Mice.Anatomical record (Hoboken, N.J. : 2007) · 2015Article
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Authors and funding
6 authors at 3 institutions in 3 countries.
Funding
Abstract
In a number of mammals muscle dilator nasi (naris) has been described as a muscle that reduces nasal airflow resistance by dilating the nostrils. Here we show that in rats the tendon of this muscle inserts into the aponeurosis above the nasal cartilage. Electrical stimulation of this muscle raises the nose and deflects it laterally towards the side of stimulation, but does not change the size of the nares. In alert head-restrained rats, electromyographic recordings of muscle dilator nasi reveal that it is active during nose motion rather than nares dilation. Together these results suggest an alternative role for the muscle dilator nasi in directing the nares for active odor sampling rather than dilating the nares. We suggest that dilation of the nares results from contraction of muscles of the maxillary division of muscle nasolabialis profundus. This muscle group attaches to the outer wall of the nasal cartilage and to the plate of the mystacial pad. Contraction of these muscles exerts a dual action: it pulls the lateral nasal cartilage outward, thus dilating the naris, and drags the plate of the mystacial pad rostrally to produce a slight retraction of the vibrissae. On the basis of these results, we propose that muscle dilator nasi of the rat should be re-named muscle deflector nasi, and that the maxillary parts of muscle nasolabialis profundus should be referred to as muscle dilator nasi.
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