Here’s something that’s been in the works for a while: a popular article in Scientific American on stretch growth of axons in large, fast-growing animals: Smith, Douglas H., Rodgers, Jeffrey M., Dollé, Jean-Pierre, and Wedel, Mathew J. 2022.

This is the second in a series of posts on our new paper about the expanded neural canals in the tail vertebrae of the Snowmass Haplocanthosaurus. I’m not going to talk much about Haplo in this post, though.

New paper out today: Wedel, Mathew; Atterholt, Jessie; Dooley, Jr., Alton C.; Farooq, Saad; Macalino, Jeff; Nalley, Thierra K.; Wisser, Gary; and Yasmer, John. 2021. Expanded neural canals in the caudal vertebrae of a specimen of Haplocanthosaurus. Academia Letters, Article 911, 10pp. DOI: 10.20935/AL911 (link) The paper is new, but the findings aren’t, particularly.

Here are some blank diagrams I whipped up for drawing in spinal cord pathways.

As has been discussed here before, the recurrent laryngeal nerve (RLN) does not only innervate the larynx, but also parts of the esophagus and trachea (see this post, and in particular this comment). You can see that in this cadaver photo, in which the RLN is sending nice big visible branches into both the esophagus […]

This isn’t new to science, it’s just one of the cool little quirks of human and comparative anatomy that more people should be aware of. Quick-quick background: autonomic (unconscious, involuntary) innervation of the body comes in two flavors, sympathetic and parasympathetic. Sympathetic nerves mostly handle the fight-or-flight response, parasympathetics are feed-breed-and-read.

Here’s a skull of a wild boar. Note the loooong face, practically a straight line from the tip of the snout to the top of the back of the head. We shall now proceed through a series of pig skulls with increasingly steep foreheads.

I’ll have more to say about both of these in the near future, but for now suffice it to say that this (link): {.aligncenter .wp-image-16586 .size-large loading=“lazy” attachment-id=“16586” permalink=“http://svpow.com/2019/09/25/the-atterholt-wedel-and-plain-old-wedel-talks-from-svpca-2019-are-now-peerj-preprints/atterholt-and-wedel-2019-svpca-neural-canal-ridges-title-slide/”

Today sees the publication of a new paper, “Cutaneous branch of the obturator nerve extending to the medial ankle and foot: a report of two cadaveric cases,” by Brittany Staples, Edward Ennedy, Tae Kim, Steven Nguyen, Andrew Shore, Thomas Vu, Jonathan Labovitz, and yours truly.

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