Muscular System

What are the components of a skeletal muscle?

• Bones, tendons, ligaments, and cartilage

• Muscle fibers, connective tissue, blood vessels, and nerves

• Fat cells, skin, hair, and nails

• Organs, blood cells, nerves, and glands

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What are the different types of muscle fibers and their characteristics?

• Cardio-twitch (Type C) and strength-twitch (Type S) fibers

• Long-twitch (Type L) and short-twitch (Type S) fibers

• Slow-twitch (Type I) and fast-twitch (Type II) fibers

• Smooth-twitch (Type III) and rough-twitch (Type IV) fibers

How do slow-twitch and fast-twitch muscle fibers differ in terms of function?

• Slow-twitch muscle fibers are used for quick, powerful movements

• Slow-twitch and fast-twitch muscle fibers have the same function

• Functionally, slow-twitch muscle fibers are used for endurance activities and are fatigue-resistant, while fast-twitch muscle fibers are used for quick, powerful movements and fatigue more quickly.

• Fast-twitch muscle fibers are fatigue-resistant

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How do muscles work together to produce movement?

• By inflating and deflating like a balloon

• By remaining completely still

• By contracting and relaxing in a coordinated manner

• By expanding and contracting randomly

Explain the role of agonist and antagonist muscles in movement.

• Agonist muscles and antagonist muscles both work together to initiate movement.

• Agonist muscles work in opposition to control the movement, while antagonist muscles initiate movement.

• Agonist and antagonist muscles have the same role in movement.

• Agonist muscles initiate movement, while antagonist muscles work in opposition to control the movement.

What are some common muscle disorders and diseases?

• Muscular dystrophy, myasthenia gravis, fibromyalgia, muscular atrophy

• Alzheimer's disease, Parkinson's disease, Multiple sclerosis

• Hypertension, Asthma, Migraine

• Arthritis, Osteoporosis, Diabetes

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The muscular system interacts with the skeletal system by:

• smooth muscles are joined with spongy bone via cartilage

• skeletal muscles pull on joints to permit movement

• cardiac muscle is connected to the ribs

• skeletal muscles are joined to one another via ligaments

The sliding filament theory explains which of the following?

• muscle extensions

• muscle inductions

• muscle contractions

• muscle formation

Which parts of the muscular system have striations? select ALL that apply

• cardiac muscle

• skeletal muscle

• smooth muscle

• none of the above

Smooth muscle is present in your:

• heart

• digestive system

• skeletal system

• skeletal muscle