Author Question: How would the loss of acetylcholinesterase from the motor end plate affect skeletal muscle? A) It ... (Read 41 times)

LaDunn · **on:** Feb 28, 2019

How would the loss of acetylcholinesteras e from the motor end plate affect skeletal muscle?
A) It would make the muscles less excitable.
B) It would produce muscle weakness.
C) It would cause muscles to stay contracted.
D) It would cause muscles to stay relaxed.
E) It would have little effect on skeletal muscles.

Question 2

The following is a list of the events that occur during a muscle contraction. What is the correct sequence of these events? 1. Myosin cross-bridges bind to the actin. 2. The free myosin head splits ATP. 3. Calcium ion is released from the sarcoplasmic reticulum. 4. The myosin head pivots toward the center of the sarcomere. 5. Calcium ion binds to troponin. 6. The myosin head binds an ATP molecule and detaches from the actin.
A) 1, 3, 5, 4, 6, 2
B) 5, 1, 4, 6, 2, 3
C) 3, 5, 1, 2, 4, 6
D) 3, 5, 1, 4, 6, 2
E) 1, 4, 6, 2, 3, 5