Metabolic threshold. it’s switching from one function to the other
This would be the upper part of the intestine.
Answer:
D. A positive contraction
Explanation:
Isometric contraction occurs when muscle length remains relatively constant as tension is produced. So that is not the right answer.
A concentric contraction is a type of muscle contraction in which the muscles shorten while generating force. It is also called positive contraction.
The correct answer is B. Hope this helps you.