WorksheetsSkeletal Muscle Contraction Physiology
Total questions: 10
Worksheet time: 9mins
Which organelle in the muscle fiber will increase or decrease depending on muscle use?
golgi apparatus
myofibril
sarcolemma
ribosomes
Which characteristic of muscle tissue describes its ability to stretch without being damaged?
Extensibility
Elasticity
Excitability
Contractility
Myoglobin ______.
is a protein involved in making ADP.
breaks down glycogen.
stores oxygen in muscle fibers.
is found in the plasma membrane of muslce fibers.
What structure in skeletal muscle cells functions in calcium storage?
tropomyosin
mitochondria
sarcoplasmic reticulum
sarcolemma
During contraction coupling/sliding filament of a muscle contraction, ATP is used 3 times. Identify when ATP is used.
Energize myosin heads.
Release calcium out of the sarcoplasmic reticulum.
Move calcium ions back into sarcoplasmic reticulum.
Attach myosin tails to the troponin.
Detach myosin from the actin.
Which following statements accurately explain the phenomenon of muscle fatigue?
(Choose all that apply)
T-tubules no longer transmitting action potential.
Ionic disturbances interfering with calcium release from the sarcoplasmic reticulum (SR).
Lactic acid build up in muscles causing extreme pain.
Muscle has used most of its available energy.
Which statement describes a Motor Unit?
A motor neuron and all the muscle fibers it stimulates.
The ability of a muscle to return to its original length after being stretched.
The 3 parts of the neuromuscular junction.
This is another name for a skeletal muscle fiber.
When muscles contract, the thin filaments slide past the thick filaments. What are the names of the thin and thick filaments?
Tropomyosin and Myosin
Actin and Myosin
Troponin and Tropomyosin
Tropomyosin and Actin
Name the neurotransmitter used at the Neuromuscular Junction.
(a)
Identify the three processes where we get the energy to run our muscles?
Aerobic respiration
oxygen
Anaerobic respiration (Glycogen-Lactic Acid system)
Phosphagen System (substrate level phosphorylation)
Saltatory Conduction
