Question

lack of relaxation between successive stimuli in sustained muscle contraction is known as..

1) spasm
2) fatigue
3) tetanus
4) tonus

plz explain...nd ans soon

Answer 1

Dear student

1. TETANUS: It is sustained muscle contraction

2. SPASM: Sudden muscle contraction

Answer 2

Answer:

The lack of relaxation between the successive stimuli in "sustained muscle contraction" is known as Tetanus.

Option ( 3).

Explanation:

The tetanic muscle contraction arises when the action potential emitted by the skeletal muscle is at a very high rate. The stimuli were delivered at a "high rate" and twitches will overlap resulting in tetanic muscle contraction.

There are two types of tetanic contractions:

• unfused and
• fused.

In the unfused tetanic contractions, the muscles not fully get relaxes and the next stimulus arrived at a fast rate while tetanic muscle contraction there is no relaxation of muscles between the stimuli.