Computed tomography and magnetic resonance diagnosis of variations in the anatomical location of the major salivary glands in 1680 dogs and 187 cats

During assessment of routine clinical magnetic resonance imaging (MRI) of the heads of dogs, variations in the location of mandibular and zygomatic salivary glands (SGs) were observed incidentally. The aims of this retrospective study were to describe anatomical variations of the major SGs found on MRI and computed tomography (CT) studies of the head in dogs and cats and to investigate possible clinical relevancy. No anatomical variation of the SGs was seen in cats, but in dogs, although variation of the parotid SG was not identified, that of the mandibular SG was found in 33/1680 animals (2%), either unilaterally (6/33 right-sided, 13/33 left-sided) or bilaterally (14/33). The Border terrier breed (19/33, 58%) was over-represented. Each atypically located mandibular SG was positioned medial to the digastric muscle and rostral to the retropharyngeal lymph node. The sublingual glands were difficult to delineate from the mandibular glands. Anatomical variation of one zygomatic gland (3/4 left-sided) was identified in four small-breed dogs (0.2%). Each atypically located zygomatic gland was tilted at the ventrorostral aspect of the masseter muscle underneath the skin surface. MRI and CT characteristics were not different between typically and atypically located SGs. None of the dogs had clinical signs related with SG disease. It was concluded that, with suspected breed predispositions, incidental unilateral or bilateral anatomical variations of mandibular and zygomatic SGs can be encountered in dogs and an awareness of these possible variations may be important in pre-surgical planning

Here Comes Tootsi

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Can Students Change Their Homework Behavior After The Midterm? Does It Help?

Using the Internet to administer homework allows us to determine if students change their homework habits during a semester and if this change results in an improvement in grades.&nbsp

Around The Map

https://digitalcommons.library.umaine.edu/mmb-ps/1370/thumbnail.jp

My Waltz Queen: Waltz Song

https://digitalcommons.library.umaine.edu/mmb-vp/2249/thumbnail.jp

Homework Habits Of College Physics Students

Several physics instructors at Central Michigan University have utilized Computer-Assisted Personalized Approach (CAPA) for homework in their courses.  Student activity on CAPA is automatically recorded and logged into the system’s files.  These log files have been examined and student surveys have been conducted.  An analysis of this data provides some insight into when students do homework and how this behavior relates to performance and demographic factors