Muscular strength is defined as the: O a) ability of a muscle to contract with maximal force b) ability to move the joints through a full range of motion c) ability to sustain a given level of muscular tension over time d) amount of force a muscle can produce repeatedly over 60 seconds

Which is true for striated muscles? a) may have spontaneous activity b) is not under the control of the will c) many cell nuclei, located below the membrane, in each muscle fiber.

When a muscle fiber is stimulated with repeated stimuli, the contraction force is summed due to: a) an increasing number of engine units recruit b) the number of actin / myosin bonds decreases c) increased strength of the action potential in the plasma membrane d) The Ca2 + concentration around and in the myofibrils increases

What is the role of calcium in muscle contractions? Multiple Choice   a) To spread the action potential through the T-tubules   b) To bind with troponin, changing its shape so that binding sites on the actin filament are exposed   c) To transmit the action potential across the neuromuscular junction   d) To re-establish the polarization of the plasma's membrane following an action potential   e) To break the cross-bridges as a cofactor in the hydrolysis of ATP

If you completely stopped working out for 6 months, the following would occur: O a) a decrease in muscle fiber type O b) an increase in muscle fiber size O c) an increase in muscle fiber number O d) a decrease in muscle fiber size

Which part of a skeletal muscle does shorten during muscular contraction? A) Thick filaments B) Thin filaments C) Z disks D) Sarcomeres

26) muscle tone is .... a) the ability of a muscle to efficiently cause skeletal movements  b) the feeling of well being following exercise  c) the condition of athletes after intensive training  d) a state of sustained partial contraction

Muscular endurance is defined as the: O a) ability of a muscle to contract repeatedly over an extended period of time b) amount of force a muscle can produce with a single maximal effort O c) ability to move the joints through a full range of motion O d) amount of time required to contract a muscle completely

14) after a muscle fiber has contracted, the calcium a) is secreted by the Golgi apparatus  b) is chemically bound to the myofilaments  c) renters the sarcoplasmic reticulum  d) is destroyed

If an individual does training with only the right knee extensor muscles, it is common to see increase in strength in knee extension force for the right leg and an increase in strength in the knee extension force of the left leg (although the increase in force is typically not to the same extent as the force increase in the right leg) a.) True b.) False