Correct answer and why Which of the following statements is FALSE? A) When muscl
ID: 3477645 • Letter: C
Question
Correct answer and why Which of the following statements is FALSE? A) When muscles contract, the actin myofilaments are pulled towards the M-lines (the center), thus decreasing the overall sarcomere length. B) Normally, skeletal muscle fibers do not contract unless they are stimulated by motor neurons. A muscle cell is also called a muscle fiber. D) During muscle contraction, the actual length of the actin and myosin molecules changes. E) The sarcolemma is a specialized plasma membrane of a muscle cell. 2Which of these statements is true of negative feedback? Negative feedback is a very unusual control mechanism in the human body. ,Negative feedback makes any deviation from a normal value larger occurs when the uterus contracts during birth D) Negative feedback is important for maintaining homeostasis in the body. Negative feedback will usually result in illness or other disturbance of normal systemsExplanation / Answer
Most control system of body operated by negative feedback.If some factor become excessive or deficient in a control system initiates negative feedback ,whuch consiat of aseries of changes that return the factor towards acertain mean value thus maintaing homeastasis.
It is positive feedback that occur when the uterus contrcts during birth .si the correct ans is option (d).
Positive feedback does not lead to stability but to instability and somerime even cause death.positive feedback better known as vicious cycle in positive feedback initiating stimulus csuses more of the same and amplify that.so correct option is option(e).
Myofibrils -ia bundle of myofilaments each comprisng of thin (actin) and thick (myosin) filaments arranged longitudinally along the muscle. .so the correct ansn is option(c)