The threshold stimulus is defined as the Maximum stimulus re

The threshold stimulus is defined as the: Maximum stimulus required to cause muscle contraction. Minimal amount of Acetylcholine needed to cause muscle contraction. Minimal amount of Ca^2+ needed to cause muscle contraction. Maximum concentration of ATP needed for the muscle contraction. Minimum concentration of ATP needed for the muscle contraction. Minimal stimulus needed to cause muscle contraction. The striations of skeletal muscle cell results of: Pattern of distribution of transverse tubules in cytoplasm. Special pattern of sarcoplasmic reticulum network. Arrangement of sarcomeres in the cell. Regular position of cisternae in cytoplasm. Regular deposition of substances, such as creatine phosphate. The rhythmic, wavelike motion produced by smooth muscled in tubular organs is called Summation. Recruitment. Sustained contraction. Peristalsis. Eccentric contraction. Summation is a: Maximum force that may be developed by muscle cell during contraction. Series of contraction, when muscle cells contract and relax completely. Process of combining for of individual twitches into one sustained contraction. Contraction of muscle cell, when its tonus increased, but length remains the same. Slow muscle cell contraction without changing its tonus. The motor unit recruitment is: Gradual contraction of muscle fibers when motor neuron fired. State of preparedness of muscle cells to new contraction. The minimal force of nerve impulse needed for motor unit activation. An increase of the number of activated motor units. A maximum force that may be developed by a motor unit. The Na^+/K^+ pump helps a muscle cell maintain a state of: Resting membrane potential. Action potential. Propagation of membrane potential. Depolarization of sarcolemma. Repolarization of sarcolemma.

Solution

17 : E

The threshold stimulus is defined as the minimal stimulus needed to cause muscle contraction

18 : C

the striations of skeletal muscle cell results of arrangement of sarcomeres in cell

19 : D

the rhythmic, wavelike motion produced by smooth muscled in tubular organs is Peristalsis

20 : C

summation is a process of combining forces of individual twitches ito one sustained contraction

21 : D

the motor unit recruitment is an increase of the number of activated motor units

22 : A

The Na/K pump helps a muscle cell maintain a state of resting membrane potential