Even though the action pictured is called “lateral neck flexion,” the neck muscles aren’t the only ones acting. Muscles of the back, such as the intertransversarii and splenius muscles, are also involved.
We took 400+ views of bones, ligaments, and teeth from Human Anatomy Atlas and put them (along with definitions, quiz questions, and the app’s functionality) into an awesome free demo, Human Anatomy Atlas SP.
If you like what you see, purchase the rest of the body systems and own the full app forever!
Bone marrow fills the cylindrical cavities in the bodies of long bones (like the femur) and occupies the spaces inside spongy bone. It also extends into the larger bony canals that contain blood vessels.
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The atlas (C01) and the axis (C02) form a pivot joint that allows for the neck’s great range of motion. So the next time you find yourself nodding off at your desk, remember to thank the atlas and axis for it.
When someone is described as having “high” cheekbones (like celebrities Tom Hiddleston and Halle Berry), it simply means their zygomatic bones are more prominent than others with softer facial features.
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Despite what BBC Sherlock says, breathing is not boring! But when you think of breathing, you tend to picture just the lungs. The upper respiratory system is just as important as the lower — read our latest blog post to find out why!