For Erection to Occur

question 29

Multiple Choice

For erection to occur

• A) there must be sufficient blood hydrostatic pressure.
• B) the sacral spinal cord must be intact.
• C) nitric oxide must be present.
• D) all of the above
• E) none of the above

---

Definitions:

Repolarization

The process by which cells, particularly nerve and muscle cells, restore their membrane potential to a resting state after depolarization.

All-Or-None Response

A principle that states that nerve or muscle fibers respond to stimuli at their threshold with a complete response or not at all.

Stimulus

Anything that can invoke a physiological response or reaction from an organism or a cell.

Voltage-Gated Channels

Protein channels in cell membranes that open or close in response to changes in electrical voltage, crucial for nerve impulse transmission.