Quizizz Ch 10

The general functions of muscle tissue include:

• production of body movement.

• all of the choices are correct.

• storage and movement of substances through the body.

• stabilization of body positions.

• eat generation.

The properties of muscle tissue include:

• electrical excitability, contractility, extensibility and elasticity.

• extensibility and elasticity only.

• contractility and electrical excitability only.

• contractility, elasticity and extensibility only.

Write True or False: Fascia is a sheet or band of irregular connective tissue.

The motor end plate differs from the rest of the sarcolemma in that it contains large numbers of ________.

• calcium

• synaptic vesicles

• ATP

• acetylcholine receptors

Thick filaments differ from thin filaments in that thin filaments possess:

• a titin binding site located on the myosin head.

• an actin binding site located on the myosin head.

• thin filaments contain actin and thick filaments contain myosin.

• thin filaments are composed of z discs and troponin.

Which of the following will increase muscle tension?

• Decreasing sarcomere length so that the actin and myosin completely overlap from one end to end.

• Adjusting sarcomere length so that the actin and myosin partially overlap.

• Increasing sarcomere length so that the actin and myosin do not touch.

• None of the above, muscle tension is always constant, so there no way to increase it.

Muscle fibers produce ATP using:

• all of the choices are correct.

• anaerobic cellular respiration.

• aerobic cellular respiration.

• creatine phosphate.

A runner nearing the end of a marathon race would produce most ATP by:

• creatine phosphate.

• amino acid breakdown.

• aerobic respiration.

• anaerobic respiration.

Write True or False: Muscle tone keeps muscles firm but does not produce enough force to cause movement.

Which of the following statements is INCORRECT?

• Concentric isotonic contractions result in muscle shortening.

• In isometric contractions, the tension generated is not great enough to move the load

• Eccentric isotonic contractions result in controlled lengthening of the muscle.

• Isometric contractions result in lengthening or shortening of the muscle and moving a load E large motor unit.