Muscular System

Which of these is NOT a major task of the muscular system?

• Movement for your body

• Heat production for the body

Which of the following words means 'the ability to recoil or bounce back to the original shape'?

• excitability

• extensibility

• contractability

Which type of muscle(s) is/are nonstriated?

Which type of channel on the axon terminal is stimulated by an incoming action potential and allows Calcium to enter the axon?

What attaches muscle to bone?

The ________ is involuntary and makes up many of your internal organs?

• gastrointestinal

• cardiac

Which two structures block the active site on an actin filament?

When myosin heads make a cross bridge and bend pulling the actin myofilament toward the center of the sarcomere, it is called the

The deltoid is attached to the clavicle and the humerus. Which one of these points is the insertion?

• clavicle

• humerus

• neither, the deltoid doesn't have an insertion

When you do sit-ups, your rectus abdominus is the