HBS 4.2 Muscles

Inside a muscle cell that is at rest, the internal charge is _______.

• Negative
• Positive
• Neutral

The ions that are responsible for removing Troponin from Tropomyosin.

• Sodium
• Calcium
• Potassium
• Magnesium

What is the name of the Thick filaments?

• Actin
• Myosin
• Myoglobin
• Titan

What two chemicals are necessary for muscle contraction to occur?

• Niacin and Potassium
• Calcium and ATP
• Sodium and Potassium
• Ach and Potassium

___ and ___ are regulatory proteins bound to actin. 

• Troponin and tropomyosin
• Myosin and actin
• Calcium and Oxygen
• Glycogen and hemoglobin

Skeletal Muscle contraction is initiated when the ________ sends a message to the muscle cell.  

• Muscle cell
• Neuron
• Gland
• None of the above

Because muscle cells have a charge difference inside and outside the cell, it's said to have _______________.  

• Action Potential
• A positive charge
• membrane potential
• A negative Charge

What is the name of the thin filaments in the muscle cell?

• Actin
• Myosin
• Myoglobin
• Titan

What is the structure that stores the Calcium in the muscle cell.  

• Sarcoplasm
• Sarcolemma
• Sarcoplasmic Reticulum
• Myoglobin

When all of the sodium channels open in the muscle cell, a ________ is created.  

• Negative Charge
• Resting potential
• Muscle relaxtion
• Action Potential

Tags

NGSS.HS-PS3-5