open access

Vol 78, No 2 (2019)
ORIGINAL ARTICLES
Published online: 2018-10-16
Submitted: 2018-07-10
Accepted: 2018-09-23
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Blind mole rat (Spalax leucodon) masseter muscle: structure, homology, diversification and nomenclature

A. Yoldas, M. Demir, R. İlgun, M.O. Dayan
DOI: 10.5603/FM.a2018.0097
·
Pubmed: 30371935
·
Folia Morphol 2019;78(2):419-424.

open access

Vol 78, No 2 (2019)
ORIGINAL ARTICLES
Published online: 2018-10-16
Submitted: 2018-07-10
Accepted: 2018-09-23

Abstract

Background: It is well known that rodents are defined by a unique masticatory apparatus. The present study describes the design and structure of the masseter muscle of the blind mole rat (Spalax leucodon). The blind mole rat, which emer- ged 5.3–3.4 million years ago during the Late Pliocene period, is a subterranean, hypoxia-tolerant and cancer-resistant rodent. Yet, despite these impressive cha- racteristics, no information exists on their masticatory musculature. 

Materials and methods: Fifteen adult blind mole rats were used in this study. Dissections were performed to investigate the anatomical characteristics of the masseter muscle.

Results: The muscle was comprised of three different parts: the superficial mas- seter, the deep masseter and the zygomaticomandibularis muscle. The superficial masseter originated from the facial fossa at the ventral side of the infraorbital foramen. The deep masseter was separated into anterior and posterior parts. The anterior part of the zygomaticomandibularis muscle arose from the snout and passed through the infraorbital foramen to connect on the mandible. 

Conclusions: The construction of the deep masseter and zygomaticomandibularis muscles were of the Myomorpha type. Further studies are needed to reveal features such as muscle biomechanics, muscle types. 

Abstract

Background: It is well known that rodents are defined by a unique masticatory apparatus. The present study describes the design and structure of the masseter muscle of the blind mole rat (Spalax leucodon). The blind mole rat, which emer- ged 5.3–3.4 million years ago during the Late Pliocene period, is a subterranean, hypoxia-tolerant and cancer-resistant rodent. Yet, despite these impressive cha- racteristics, no information exists on their masticatory musculature. 

Materials and methods: Fifteen adult blind mole rats were used in this study. Dissections were performed to investigate the anatomical characteristics of the masseter muscle.

Results: The muscle was comprised of three different parts: the superficial mas- seter, the deep masseter and the zygomaticomandibularis muscle. The superficial masseter originated from the facial fossa at the ventral side of the infraorbital foramen. The deep masseter was separated into anterior and posterior parts. The anterior part of the zygomaticomandibularis muscle arose from the snout and passed through the infraorbital foramen to connect on the mandible. 

Conclusions: The construction of the deep masseter and zygomaticomandibularis muscles were of the Myomorpha type. Further studies are needed to reveal features such as muscle biomechanics, muscle types. 

Get Citation

Keywords

anatomy; masseter muscle; Spalax leucodon

About this article
Title

Blind mole rat (Spalax leucodon) masseter muscle: structure, homology, diversification and nomenclature

Journal

Folia Morphologica

Issue

Vol 78, No 2 (2019)

Pages

419-424

Published online

2018-10-16

DOI

10.5603/FM.a2018.0097

Pubmed

30371935

Bibliographic record

Folia Morphol 2019;78(2):419-424.

Keywords

anatomy
masseter muscle
Spalax leucodon

Authors

A. Yoldas
M. Demir
R. İlgun
M.O. Dayan

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