Fun Fact: Iliopsoas

Anatomy def: Iliopsoas muscles are flexors of the hip joints. Flexion draws together the bones of a joint thereby reducing the angle between them. 

Outlander def: Preferring the Highland Fling dismount, Claire and Jamie contract right iliopsoas muscles to hoist their right legs and skedaddle-from-the-saddle.

Learn about iliopsoas in Anatomy Lesson #7: Jamie’s Thighs – Ode to Joy!

Each iliopsoas is a composite muscle formed of iliacus and psoas. These muscles arise in the abdomen via pelvic bone and lumbar vertebrae, respectively. They descend into the thigh, unite and insert via a common tendon into the femur. 

As they contract, the thigh is raised toward the torso, or with the thigh fixed (held steady), the torso is flexed toward the thigh. We actually have nine hip flexors for each hip joint, but iliopsoas is strongest!

Fun Fact: If one is a proper anatomist (he he), psoas is more accurately termed psoas major.  Why? Because, there is a psoas minor – albeit only 25% of people have one. When present, it’s a pretty dinky muscle. It lies anterior to psoas major and contributes little to hip flexion.

And,  just so you know, the “p” in psoas is silent, so the word is pronounced “soas.”  

Read about thighs in Diana’s first splendid tome, Outlander! Does she mention iliopsoas muscle? No, but she does mention thighs. Woot! 

Claire notices Jamie’s thighs on that wild ride through the night near Cocknammon Rock:

My companion seemed to be having little trouble, in spite of being unable to use his right hand. I could feel his thighs behind mine, shifting and pressing occasionally to guide the horse. I clutched the edge of the short saddle in order to stay seated; I had been on horses before, but was by no means the horseman this Jamie was.

And, later after marriage vows have been made, Jamie recalls his thighs and praises Claire’s bottom <G>:

But then that ride through the dark together….with that lovely broad arse wedged between my thighs…

See Claire do the Highland High Kick in Starz ep. 102, Castle Leoch.  Gentleman Jamie follows suit as he dismounts to aid deceitful Geneva in Starz, ep. 304, Of Lost Things!

The deeply grateful,

Outlander Anatomist

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Photo credits: Sony/Starz

Fun Fact: Latissimus Dorsi Redux

Anatomy def: A pair of broad, fan-shaped back muscles; each wraps around the ipsilateral (same side) of chest and inserts into the upper humerus (arm bone). 

Outlander def: Whew! An amazing muscle mass of Jamie’s left armpit (red arrow). For sure, his right armpit has its own latissimus, but Claire is in the way!  <G>

Latissimi dorsi (pl.) form the rear boundary of each armpit (pec major forms each front boundary). Claire appears to be gazing at his left latissimus – and, who isn’t???

Learn about latissimus dorsi in Anatomy Lesson #19, To Arms, Too Arms, Two Arms! 

Today’s FF is the second covering this muscle. The first Latissimus dorsi posted December 2016, used a side view of latissimus dorsi as it angles from lower thoracic and lumbar spine towards the armpit (Outlander ep 106, The Garrison Commander). This broad muscle mass passes diagonally across the side of chest. So, now we view this important muscle from two vantage points.

Each latissimus dorsi is a powerful mover of its humerus:

  • abducts (draws humerus toward the thorax)
  • extends  (draws humerus backwards)
  • internally rotates  (rolls humerus inwards, towards chest) 

Read about Jamie’s armpit ablutions aboard the Artemus in Voyager book.  This lovely passage is from Jamie’s promises to Claire, once he gets her on land, <G>:

“Well, ye might moan a bit, if ye like, to encourage me, but otherwise, ye just lie still.” 

He didn’t sound as though he needed any encouragement whatever. One of his hands was resting on my thigh as he used the other to swab his chest with the damp towel. As he finished, the hand slid behind me, and squeezed. 

“My beloved’s arm is under me,” I quoted. “And his hand behind my head. Comfort me with apples, and stay me with flagons, For I am sick of love.” 

There was a flash of white teeth in his beard. 

“More like grapefruit,” he said, one hand cupping my behind. “Or possibly gourds. Grapefruit are too small.” 

“Gourds?” I said indignantly. 

“Well, wild gourds get that big sometimes,” he said. “But aye, that’s next.” He squeezed once more, then removed the hand in order to wash the armpit on that side. “I lie upon my back and have ye stretched at length upon me, so that I can get hold of your buttocks and fondle them properly.” He stopped washing to give me a quick example of what he thought proper, and I let out an involuntary gasp.

See Jamie’s left latissimus dorsi resting in his armpit in Starz ep 306, A. Malcolm.

The deeply grateful,

Outlander Anatomist

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Photo Credit: Sony/Starz

Fun Fact: Deltopectoral Triangle

Anatomy Def:  The deltopectoral triangle is a groove between deltoid and pectoralis major muscles (above figure – blue arrow). 

Outlander def: That groovy depression between chest and shoulder masses. A fav spot for a Claire bliss-kiss! (check it out on yourself or a pal!)

Learn about the deltopectoral triangle and deltoid and pectoralis major muscles in Anatomy Lesson #19, To Arms, Too Arms, Two Arms!  

The deltopectoral triangle (again, blue arrow above) is important because it:

  • Contains the cephalic vein, pectoral nerves and pectoral artery (a branch of thoracoacromial trunk). All are important structures!
  • Provides surgical access to the genohumeral (shoulder) joint, sparing adjacent muscles.
  • Serves as a landmark for percutaneous infra-clavicular cannulation of the subclavian vein. Whew! No worries, it means placing a tube through the skin below the clavicle into the subclavian vein.  

BTW, the cephalic vein is that yummy vessel at the tip of the red arrow. In most folks, this vein ascends through the arm, entering the deltopectoral triangle before diving deeply to end in the subclavian vein – warning – a few folks don’t have one!

Read about Claire’s cephalic vein passing up her arm, through the triangle and heading for the subclavian vein in Outlander book. Yay, once again, Diana has provided!

“Your skin is so fine I can see the blood moving beneath it,” Jamie said, tracing the path of a sunbeam across my bare stomach. “I could follow the veins from your hand to your heart.” He drew his finger gently up my wrist to the bend of the elbow, up the inner side of my upper arm, and across the slope below my collarbone. “That’s the subclavian vein,” I remarked, looking down my nose at the path of his tracking finger. “Is it? Oh, aye, because it’s below your clavicle.

See Jamie’s deltopectoral triangle in Starz ep 313, Eye of the Storm. Claire has her eye on that triangle and the splendid vein leading to it- creates a storm for Claire, too! <G>

The deeply grateful,

Outlander Anatomist

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Photo creds: Starz ep 313, Eye of the Storm