1. Muscles

2. Muscle Attachment
Tendon (attaches muscle to bone)—white fibrous connective tissue made up of the protein called collagen
Muscle Origin- is the attachment site that doesn't move during contraction (proximal)
Muscle Insertions- is the attachment site that does move when the muscle contracts (distal)

3. Muscle Movement
Muscle contraction results in different types of movement. The particular movement is a direct result of the muscle attachment.
Ex. Biceps performs flexion of the forearm as the forearm is moved

4. Muscle Movement There are around 640 muscles in the human body
When movement of a body part occurs, muscles work in groups rather than individually.
During that particular movement, individual muscles will play different roles depending on their origin and insertion.
Agonist- prime mover, is the muscle that is primarily responsible for the movement (contracts)
Antagonist- its action opposes that of the agonist (relaxes)
Synergist Muscles- a muscle which acts with another.

5. Anterior Muscles

6. Posterior Muscles