anatomy: sarcomere structure

Function of a sarcomere

• Made up of myofilaments

• The basic contractile unit of muscle contraction

• An organelle

• An organ

The part of the sarcomere that C (Blue) refers to is the...

• Actin

• Myosin

• Troponin

• Tropomyosin

The part of the sarcomere that D (Red) refers to is the?

• Actin
• Myosin
• Troponin
• Tropomyosin

Thin filaments in a myofibril are

• Sarcomeres
• Sarcoplasm
• Actin
• Myosin

Thick filaments are in a myofibril are

• ATPase
• Sarcoplasmic reticulum
• Actin
• Myosin

Actin or mysoin containing structure.

• Tendon
• myofilament
• myofibril
• Fiber

Sarcomeres are found on

• Fascicles
• Muscle Fibers
• Myofibrils
• Actin and Myosin Filaments

Myofibrils are made up of two types of proteins known as?

• Actin and Myosin
• Troponin and Tropomyosin
• Myoglobin and hemoglobin
• none of these

List the structures of a muscle from smallest to largest

• myofibril, muscle fiber, fascicle, muscle
• fascicle, muscle, myofibril, muscle fiber
• fascicle, sarcomere, muscle, muscle fiber
• myofibril, muscle, fascicle, sarcomere

What is section 7 called?

• A Band

• Z Disc

• H Zone

• I band