Unit 5 Mock Exam

Allow for filling of the heart and keeps contractions separate

True or False: Cardiac cells contract like waves

• True

• False

These two structures are located in the intercalated discs

• cytoskeleton

• sarcoplasmic reticuluum

• desmosomes

• gap junctions

True or false: oxidative fibers are more fatigue resistant than glycolytic

• True

• False

damage to the femoral nerve would result in diminished

• extension the knee

• extension of the hip

• abduction of the hip

• abduction of the knee

True or false: glycolytic fibers have the same amount of blood supply and mitochondria as oxidative fibers

• True

• False

This type of cell has extra mitochondria to prevent fatigue

• Skeletal

• smooth

• cardiac

A _____ frequency leads to summation and stronger contraction

• higher

• faster

• lower

• slower

all muscle types have the same myofilaments

• true

• false

This is a cause for fatigue in muscles

• Ca2+ disruptions

• lactic acid build up

• Atp is not being recycled fast enough

• not enough ATP