- There are more than 600 muscles in the Human Body!!
- Muscles are:
- Needed for movement
- Needed for posture
- Needed for circulation
- Needed for digestion
- Needed for respiration
- 3 Types of Muscle
- Skeletal Muscle: Striated, multinucleated
- Smooth Muscle: Non-striated, single nucleus
- Cardiac Muscle: Striated, single nucleus, branched
- Skeletal Muscle
- Move your bones.
- Voluntary (conscious control)
- Over joints
- Long fibers
- Stripes (striations)
- Cardiac Muscle
- The muscle of the heart.
- Involuntary (automatic control)
- Works continuously
- Strongest endurance
- Only found in the heart
- Some intercalated discs
- Smooth Muscle
- The muscle of internal organs
- Involuntary (automatic control)
- Contract slowly
- Can remain contracted for long periods
- Usually spindle-shaped
- A.D.A.M. Video clip: Exercise
- Weightlifting, pushups, and sprinting are forms of anaerobic exercise.
- Muscles fatigue (get tired) fastest with anaerobic exercise.
- A.D.A.M. Video clip: Exercise chart
- Type of Muscle: Smooth; Where found: Walls of body organs (stomach and intestines); Voluntary/Involuntary: Involuntary
- Type of Muscle: Cardiac; Where found: Heart; Voluntary/Involuntary: Involuntary
- Type of Muscle: Skeletal; Where found: Attached to bones; Voluntary/Involuntary: Voluntary
- Anatomy of a Muscle
- Label:
- Bone
- Tendon
- Myofibril
- Cell Nuclei
- Fascicle
- Body of Muscle
- Muscle Fiber
- Which of these (above) is the muscle cell?
- Muscle Fiber
- A.D.A.M. Video clip: Skeletal Muscle
- Which is larger, a muscle fascicle or a muscle fiber? Muscle fascicle
- Which is larger, a muscle fiber or a myofibril? Muscle fiber
Parent Tip: Review the logic above to help your child master the concept of types of muscles worksheet.
