Biology 2121 Chapter 10

Introduction to Muscles Introduction to Muscles

Opposition Opposition

Agonists

Antagonists

Naming of Skeletal Muscles Naming of Skeletal Muscles

Fasicle Arrangement Fasicle Arrangement

Fasicle Arrangement Fasicle Arrangement Range of motion and PowerRange of motion and Power

Convergent and Multipennate

Parallel

Circular

Biceps-Fusiform

Bipennate

Bones and Muscles Bones and Muscles

Examples of Lever Systems

You Are Responsible for: You Are Responsible for:

All of the muscles listed on the next couple of pages. Origin and Insertions Action(s)

Identification or general description of any muscle you are responsible for in the lab. M/C questions Diagram identification

Origins and Insertions/Action(s)

Sternocleidomastoid; SternohyoidSternocleidomastoid; Sternohyoid

Neck

Abdominals

Trapezius and Latissimus Dorsi Trapezius and Latissimus Dorsi

Muscles of the Back

External Thorax – Upper arms; Shoulder

Shoulder Muscles

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Upper Arms

Levator Ani and Coccygeus Levator Ani and Coccygeus

Pelvic Muscles

Upper Leg

Biceps Femoris Biceps Femoris

Hamstring Group

Long HeadLong Head Short HeadShort Head

Lower Leg