Which of the following statements regarding the sliding filament model is false?
A. Actin and myosin do not shorten during contraction.
B. Both actin and myosin myofilaments shorten during contraction.
C. The sarcomere shortens.
D. The I band and H zones become narrower during contraction.
E. The A band remains constant in length.
B
You might also like to view...
Light rays travel faster through water or glass than through air
Indicate whether the statement is true or false
Oppositely charged ions in solution are prevented from combining by
A) heat capacity of water. B) hydration spheres. C) water's nonpolar nature. D) free radicals. E) hydrogen bonding.
The white matter of the spinal cord is surrounded by its grey matter.
Answer the following statement true (T) or false (F)
The plateau portion of the action potential in contractile cardiac muscle cells is due to:
A. an increased potassium permeability. B. an influx of calcium ions. C. an influx of sodium ions. D. exit of calcium ions from the sarcoplasmic reticulum.