Muscular System

Learning Objectives

By the end of this lesson, the learner should be able to:

• Describe the actions and roles of agonists and antagonists
• Explain the structure and organization of muscle fascicles and their role in generating force
• Explain the criteria used to name skeletal muscles
• Identify the skeletal muscles and their actions on the skeleton and soft tissues of the body
• Identify the origins and insertions of skeletal muscles and the prime movements

Muscles

There are 3 types of muscle tissue in the muscular system:

Skeletal muscle:

• Attached to bones of skeleton
• Voluntary (consciously controlled)

Cardiac muscle:                                

• Makes up most of the wall of the heart
• Involuntary (non-consciously controlled)
• Responsible for pumping action of the heart

Smooth muscle:

• Found in walls of internal organs, such as those of digestive tract
• Involuntary (non-consciously controlled)

Structure of a Skeletal Muscle

• Over 600 skeletal muscles in the body
• Attached to bones, and skin of face
• Under conscious control (voluntary)
• Are organs of the muscular system

Skeletal muscles are composed of:

• Skeletal muscle tissue
• Connective tissues
• Blood
• Nervous tissue

Composition of a Skeletal Muscle

Skeletal Muscle Fiber Structure

Learning Objectives

By the end of this lesson, the learner should be able to:

• Describe the actions and roles of agonists and antagonists
• Explain the structure and organization of muscle fascicles and their role in generating force
• Explain the criteria used to name skeletal muscles
• Identify the skeletal muscles and their actions on the skeleton and soft tissues of the body
• Identify the origins and insertions of skeletal muscles and the prime movements

Muscles

There are 3 types of muscle tissue in the muscular system:

Skeletal muscle:

• Attached to bones of skeleton
• Voluntary (consciously controlled)

Cardiac muscle:                                

• Makes up most of the wall of the heart
• Involuntary (non-consciously controlled)
• Responsible for pumping action of the heart

Smooth muscle:

• Found in walls of internal organs, such as those of digestive tract
• Involuntary (non-consciously controlled)

Structure of a Skeletal Muscle

• Over 600 skeletal muscles in the body
• Attached to bones, and skin of face
• Under conscious control (voluntary)
• Are organs of the muscular system

Skeletal muscles are composed of:

• Skeletal muscle tissue
• Connective tissues
• Blood
• Nervous tissue

Composition of a Skeletal Muscle

Skeletal Muscle Fiber Structure

Learning Objectives

By the end of this lesson, the learner should be able to:

• Describe the actions and roles of agonists and antagonists
• Explain the structure and organization of muscle fascicles and their role in generating force
• Explain the criteria used to name skeletal muscles
• Identify the skeletal muscles and their actions on the skeleton and soft tissues of the body
• Identify the origins and insertions of skeletal muscles and the prime movements

Muscles

There are 3 types of muscle tissue in the muscular system:

Skeletal muscle:

• Attached to bones of skeleton
• Voluntary (consciously controlled)

Cardiac muscle:                                

• Makes up most of the wall of the heart
• Involuntary (non-consciously controlled)
• Responsible for pumping action of the heart

Smooth muscle:

• Found in walls of internal organs, such as those of digestive tract
• Involuntary (non-consciously controlled)

Structure of a Skeletal Muscle

• Over 600 skeletal muscles in the body
• Attached to bones, and skin of face
• Under conscious control (voluntary)
• Are organs of the muscular system

Skeletal muscles are composed of:

• Skeletal muscle tissue
• Connective tissues
• Blood
• Nervous tissue

Composition of a Skeletal Muscle

Skeletal Muscle Fiber Structure

Learning Objectives

By the end of this lesson, the learner should be able to:

• Describe the actions and roles of agonists and antagonists
• Explain the structure and organization of muscle fascicles and their role in generating force
• Explain the criteria used to name skeletal muscles
• Identify the skeletal muscles and their actions on the skeleton and soft tissues of the body
• Identify the origins and insertions of skeletal muscles and the prime movements

Muscles

There are 3 types of muscle tissue in the muscular system:

Skeletal muscle:

• Attached to bones of skeleton
• Voluntary (consciously controlled)

Cardiac muscle:                                

• Makes up most of the wall of the heart
• Involuntary (non-consciously controlled)
• Responsible for pumping action of the heart

Smooth muscle:

• Found in walls of internal organs, such as those of digestive tract
• Involuntary (non-consciously controlled)

Structure of a Skeletal Muscle

• Over 600 skeletal muscles in the body
• Attached to bones, and skin of face
• Under conscious control (voluntary)
• Are organs of the muscular system

Skeletal muscles are composed of:

• Skeletal muscle tissue
• Connective tissues
• Blood
• Nervous tissue

Composition of a Skeletal Muscle

Skeletal Muscle Fiber Structure