Monday, October 21, 2013

More Advanced Anatomy Work: Roberto Almanza

I was sorting through student work from last Spring and I happened upon several anatomical pencil drawings by a former student, Roberto Almanza. They needed to be shared, so tonight's quick post is just for this purpose. 

The first piece shows the posterior torso. Notice the protruding spinous process of the C7 vertebra jutting out in the center of the trapezius muscle's tendinous floor. Also notice how Roberto renders the trapezius muscle's undulations as it wraps over the infraspinatous muscles on either side. I also like that he rendered the deltoid muscle's separate sections, and (this is my favorite part) he has included the posterior portion of the serratus anterior muscle as it shows through the latissimus dorsi muscles. Most artists forget this. We can also see teres minor, teres major, the lumbar sheath (and the bulge of the sacrospinalis muscle deep to it) and a small portion of the external oblique muscles. To read more about the posterior torso muscles, go to The Posterior Torso Muscles: Let's Go Back in Time and The Posterior Back Muscles, Part 2: Under the Radar. 

Next we have the anterior torso muscles. I like the way Roberto has shown the cut away and peeled back rectus sheath, allowing the rectus abdominis muscle, just deep to it, show clearly. Also seen here are the sternocleidomastoid muscles, the pectoralis major muscles, the serratus anterior muscles, the external obliques, and the right iliac crest. Read more about this part of the body at The Anterior Torso: Peel Away the Layers.

I only required the students to label one of these drawings, and Roberto chose to label this one of the head and anterior neck. This one is mostly bone oriented, but we also see several anterior neck muscles, including sternocleidomastoid, sternohyoid and omohyoid. We also can see the thyroid and cricoid cartilages at the proximal end of the trachea, peeking out just between the sternohyoid muscles. Read more about the anterior neck in Anterior Neck: Theme and Variations and more about the head at The Head: Part 1 of Oh My Gosh, Who Knows?

Next we have the muscles of the dorsal forearm. 

And here's a close-up, in which we can more clearly see the muscles brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor carpi ulnaris, abductor pollucis longus and extensor pollucis longus. Read more about the forearms in The Dorsal Forearm, Part 1: Compartment Search, The Dorsal Forearm, Part 2: Which Side are You On, Anyway?, and The Dorsal Forearm, Part 3: The Final Chapter. 

And finally we have Roberto's leg rendering. This shows a lateral view of the left leg, including (among others) the peroneous longus and brevis muscles on the lateral lower leg, the gastrocnemius muscle on the posterior lower leg, the vastus lateralus, gluteus medius and maximus muscles, and the iliotibial band on the lateral thigh. To read more about the lateral leg, go to The Lateral Knee, A Change of Scenery, The

Many thanks to Roberto Almanza for these images. Please do yourself a favor and check out Roberto's illustration work here.

 I think I will get caught up on the elbow joint next. Until next time!

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