Download Upper Body Muscle Actions

Name:_________________________________
Anatomical Kinesiology
Lab Assignment #5
“Upper Body Muscle Actions”
Part I. Upper Body Motion
Look at the movement assigned and then answer the questions below.
Movement: tricep extension (the extension phase)
1. What are all the muscles being shortened (concentrically) and list their origin and insertions?
2. What are all the muscles are being stretched (eccentrically) and list their origin and insertions?
3. What plane and axis of rotation is the motion being performed?
Movement: the up phase of lateral arm raises (include shoulder & scapula muscles)
4. What are all the muscles being shortened (concentrically) and list their origin and insertions?
5. What are all the muscles are being stretched (eccentrically) and list their origin and insertions?
6. What plane and axis of rotation is the motion being performed?
Part II. Origin, Insertion, & Action
Answer the following questions regarding the origin, insertion, and action of the muscle.
1. What is the origin, insertion, and action of the external obliques?
2. What is the origin, insertion, and action of the pectoralis major?
3. What are the origins, insertion, and action of the deltoid (all of them)?
4.
What is the origin, insertion, and action of the sternocleidomastoid?
Part III. Muscle Landmarks
For each landmark listed, identify a muscle that originates or inserts on the landmark.
1.
Greater Tuberosity
2.
Lesser Tuberosity
3. Ribs
4. Acromion Process