Motor Neurons 1 and 2 Start Out Innervating the Same

question 2

Multiple Choice

Motor neurons 1 and 2 start out innervating the same number of muscle fibers in a neonatal mouse. If motor neuron 1 releases more acetylcholine in the first two weeks postpartum, ultimately:

• A) motor neuron 1 will innervate more muscle fibers.
• B) motor neuron 1 will have a thicker axon.
• C) motor neuron 1 will be activated prior to motor neuron 2 during muscle contraction.
• D) a and b
• E) a, b, and c

---

Definitions:

Low Tide

The state of the tide when it is at its lowest level, resulting in the minimal reach of seawater on the shore.

Lateral Movement

The horizontal movement of Earth's crust, often associated with tectonic activities.

Slope of Beach

The incline or gradient of a beach surface, which can directly affect the waves' intensity and the speed at which water retreats back into the sea.

Sediment Movement

The process by which sediment is transported by natural forces such as water flow, wind, or ice.