BCHM 4360 EXAM 3 ACTUAL EXAM 2026
LATEST UPDATE QUESTIONS AND
CORRECT VERIFIED ANSWERS ALREADY
GRADED A+
Why would muscles need insulators? - ANS-used for energy
Myosin - ANS-thick filament, A band, dark bands
Actin - ANS-Thin filament, light bands, I band
What is an H zone? - ANS-Myosin only
T- tubules - ANS-transverse tubules : system of inward extensions
of the muscle fiber plasma membrane.
Tropomyosin - ANS-covers myosin binding sites on the actin
molecules
Sliding filament theory - ANS-theory that actin filaments slide
toward each other during muscle contraction, while the myosin
filaments are still
Why is ATP required both for contraction and relaxation? - ANS-for
binding and releasing
Latent Period - ANS-time between application of a stimulus and the
beginning of a response in a muscle fiber
, Contraction phase - ANS-Calcium ions bind
Tension builds to peak
Relaxation phase - ANS-Ca2+ levels fall
Active sites are covered and tension falls to resting levels
Tetanus is what? - ANS-Fused contraction
Why do you get exhausted quicker with heavier load? - ANS-Temporal
summation, spatial summation
Creatine Phosphate - ANS-immediate replensihment in muscle
Anaerobic Glycolysis - ANS-Lactic acid formation
aerobic respiration - ANS-mitochondria-sustained activity
what does EPOC mean? - ANS-Post exercise oxygen consumption,
increased rate of oxygen your body uses after intense exercise to return to
its resting state.
High temp= High Metabolism
What are some causes of fatigue? - ANS--ATP depletion
- Lactic acid accumulation
-Ionic imbalance
- CNS fatigue
If CO2 is high is oxygen high or low? - ANS-LOW
LATEST UPDATE QUESTIONS AND
CORRECT VERIFIED ANSWERS ALREADY
GRADED A+
Why would muscles need insulators? - ANS-used for energy
Myosin - ANS-thick filament, A band, dark bands
Actin - ANS-Thin filament, light bands, I band
What is an H zone? - ANS-Myosin only
T- tubules - ANS-transverse tubules : system of inward extensions
of the muscle fiber plasma membrane.
Tropomyosin - ANS-covers myosin binding sites on the actin
molecules
Sliding filament theory - ANS-theory that actin filaments slide
toward each other during muscle contraction, while the myosin
filaments are still
Why is ATP required both for contraction and relaxation? - ANS-for
binding and releasing
Latent Period - ANS-time between application of a stimulus and the
beginning of a response in a muscle fiber
, Contraction phase - ANS-Calcium ions bind
Tension builds to peak
Relaxation phase - ANS-Ca2+ levels fall
Active sites are covered and tension falls to resting levels
Tetanus is what? - ANS-Fused contraction
Why do you get exhausted quicker with heavier load? - ANS-Temporal
summation, spatial summation
Creatine Phosphate - ANS-immediate replensihment in muscle
Anaerobic Glycolysis - ANS-Lactic acid formation
aerobic respiration - ANS-mitochondria-sustained activity
what does EPOC mean? - ANS-Post exercise oxygen consumption,
increased rate of oxygen your body uses after intense exercise to return to
its resting state.
High temp= High Metabolism
What are some causes of fatigue? - ANS--ATP depletion
- Lactic acid accumulation
-Ionic imbalance
- CNS fatigue
If CO2 is high is oxygen high or low? - ANS-LOW
