Muscles Test

When muscles contract they

• extend
• strech
• shorten
• both extend and strech

The dense layers of collagen-fibers (connective tissue) that surround the entire skeletal muscle is the

• the Epimysium
• the tendon
• the Perimesium
• the sarcomere

The bundle of collagen-fibers (connective tissue) that connect the skeletal muscle to bone is the

• ligament
• fasicle
• myofibril
• tendon

Muscle fiber cells (skeletal muscle) differ from "typical cells" in that they

• are multinucleated
• lack mitochondria
• are very small
• all answers are true

The thin filaments of a sarcomere consist of

• actin
• myosin
• troponin
• tropomyosin

The thick filaments of a sarcomere consist of

• actin
• myosin
• troponin
• tropomyosin

Place the steps of the sliding filament theory in order by placing a number on the line.

• 4, 1, 2, 5, 3
• 1, 2, 3, 4, 5
• 5, 4, 3, 2, 1
• 5, 3, 1, 2, 4

What muscles make up the quadriceps

• Rectus femoris
• Vastus medialis
• Vastus Intermedius
• Vastus lateralis
• Sartorius

What muscles make up the hamstring:

• Bicep femoris
• Semitendinosus
• Semimembranosus
• Gluteus maximus
• Tensor Fasciae Latae (Adductor group)

Label A

• Myofibrils

• Myofilaments

• Sarcoplasm

• Sarcolemma