Muscle Anaotmy and Contraction

Which is NOT a function of the muscular system? 

• Generating Heat
• Cleaning out toxins
• Maintaining Posture
• Adducting the hips

Thick filaments are also know as:

• Actin
• Myosin
• Troponin
• Tropmyosin

What is a segment of a myofibril and one contractile unit called?

• Sarcomere
• Myofilament
• Muscle Fiber
• Fasicle

The I-band consists of:

• Actin
• Myosin
• Actin + Myosin
• Nothing

What is the boundary of the sarcomere? 

• H Zone
• M Line
• I Band
• Z Line

Which neurotransmitter initiates an action potential in the sarcolemma?

• Actin
• Calcium Ions
• Serotonin
• Acetylcholine

Z represents

• Motor neuron

• Synapse

• Acetylcholine

• Sarcolemma

Tags

NGSS.HS-LS2-3

X represents

• Motor neuron

• Synapse

• Acetylcholine

• Sarcolemma

What is the name of the protein myofilament that pulls the actin towards the center of the Sarcomere?

• Fascicle
• Actin
• Myosin
• Titin

The ________ functions in storing Ca². 

• Sarcoplasmic Reticulum
• T Tubules
• Mitochondria
• Fascicle