Writer's cramp can occur in Anatomy and Physiology lecture class.What factor would most likely contribute to the muscles not being able to relax?
A)oxygen being delivered by myoglobin and hemoglobin
B)a deficit of ATP keeping myosin from detaching
C)calcium being pumped into the sarcoplasmic reticulum
D)ACh being degraded by AChE

Question

Quizplus · Accepted Answer

Writer's cramp is a type of dystonia, a movement disorder caused by abnormal muscle contractions. In this case, the muscles in the hand and forearm become overactive and contract involuntarily, leading to pain and difficulty with writing. The main factor contributing to this is a deficit of ATP, which keeps the myosin heads attached to actin filaments and prevents the muscles from relaxing. This can be caused by a variety of factors, including overuse, fatigue, and stress. The other options listed do not directly contribute to muscle contraction or relaxation in the same way.

Writer's Cramp Can Occur in Anatomy and Physiology Lecture Class