Labs 3-6 Muscular System Videos


Hey Kine 2031 students, I've put up videos of labs 3-6 from anatomy this semester because about halfway through the videos I went over the muscles covered on a skeleton model, covering origin, insertion, and function of each muscle. There are more muscles covered in the course kit so study all of them for your exam but these videos may help out with the muscles that overlapped in the labs.

For the muscles that aren't covered in the videos, it may be beneficial to think about them similarly; when muscles contract they bring the structures (bones) they are attached to, closer together. Multiple functions, combined contractions, and elongations of muscles allow us to move our bodies in many ways. But if you think of where the muscle is coming from (origin) and going to (insertion), you can usually figure out the function -> example; Latissimus Dorsi (Latin translation: Widest Back Muscle)

O - Vertebrae T7-L5, Crests of sacrum, and inferior 4 ribs

I - Bicicptal groove of humerus

F - Shoulder extension, Adduction and medial rotation of humerus

The latissimus dorsi originates on your spine and ribs and attaches near the top of your humerus. When this muscle contracts and brings the insertion point closer to the origination point, it results in shoulder extension (bringing the shoulder and arm back behind you), and adduction and medial rotation of humerus (bringing your arm closer to your body's mid-line (your side), and rotating the arm towards your mid-line). This applies to all muscles, and when thinking about the application of muscles (aka exam questions), this thought process can be helpful.

As mentioned below the videos, the majority of the human anatomy information will be covered in the lesson with the skeleton but I may go over some details during the lesson on the cat cadaver so I'd watch the whole video first. Hope they help!