Neuroscience Students are celebrating the end of the year and have gotten together for a few ice-old Pepsi’s. Sarvesh holds out his mug for a refill and when Nicole starts to pour soda in, the mug slips down slightly but Sarvesh quickly recovers to prevent his mug from spilling. Which of the following does NOT occur in this reflex circuit? Group of answer choices The added load of the soda stretches the intrafusal muscle fibers of the bicep Sensory neurons from the muscle spindle synapse onto α motor neurons and interneurons The rate of action potential firing increases in the muscle spindle fiber Excitation of motor neurons innervating the bicep muscle All of the above *do* occur

Neuroscience

Students are celebrating the end of the year and have gotten together for a few ice-old Pepsi’s. Sarvesh holds out his mug for a refill and when Nicole starts to pour soda in, the mug slips down slightly but Sarvesh quickly recovers to prevent his mug from spilling. Which of the following does NOT occur in this reflex circuit?
Group of answer choices
The added load of the soda stretches the intrafusal muscle fibers of the bicep
Sensory neurons from the muscle spindle synapse onto α motor neurons and interneurons
The rate of action potential firing increases in the muscle spindle fiber
Excitation of motor neurons innervating the bicep muscle
All of the above *do* occur