Muscle Physiology Quiz

two twisted protein strands with globular heads; part of the thick filament

• Troponin

• Myosin

• Actin

• Sarcomere

end of a muscle attached to a moveable part

• Origin

• Insertion

• Tendon

• Summation

time between a stimulus and the beginning of a response in a muscle fiber

• Threshold Stimulus

• Isotonic Contraction

• Summation

• Latent Period

single cell that contracts (exerts a pulling force) in response to stimulation and relaxes when stimulation ends; also known as myofiber

• Fast twitch fibers

• Muscle tone

• Skeletal muscle fiber

• Sarcomere

complex of three proteins associated with tropomyosin

• Tropomyosin

• Myosin

• Actin

• Troponin

molecule in muscle that stores extra energy in phosphate bonds

• Myoglobin

• Hemoglobin

• Creatine Phosphate

• Sarcoplasmic Reticulum

inflammation of a tendon

• Tendinitis

• Sprain

• Cramp

• Strain

neurotoxin produced by the bacteria clostridium bacterium; prevents fusion of acetylcholine to the cell membrane and leads to paralysis of muscles

• Diphtheria Toxin

• Cholera Toxin

• Botulinum Toxin

• Tetanus Toxin

structural unit of a myofibril and the functional unit of muscle contraction

• Sarcoplasmic Reticulum

• Myosin

• Sarcomere

• Myofibril

the model for muscle contraction in which muscle proteins slide past each other to generate force

• Tetanus

• Isometric Contraction

• Sliding Filament Model

• Motor Unit