MCCOLLUM TEST

How does the brain interpret a pain signal from a broken arm?

• Neurons send a signal directly to the arm, causing it to hurt more.

• Special cells called neurons send a signal through the spinal cord to the brain, which interprets it as pain.

• The spinal cord directly interprets the signal as pain and sends a message to the brain.

• The brain sends a signal to the spinal cord, which then sends it to the arm to cause pain.

What is the primary function of opioid receptors when activated by the body's natural painkillers (endorphins)?

• They increase the speed of pain signals to the brain.

• They act like a brake to slow down the neuron's ability to send pain signals.

• They release more dopamine, causing a feeling of pleasure.

• They cause the body to panic in response to injury.

Are you enjoying the video lesson?

• Yes

• No

How do prescribed opioid painkillers affect the brain's dopamine system?

• They directly produce dopamine in the VTA.

• They activate inhibitory neurons, reducing dopamine release.

• They turn off inhibitory neurons, releasing the brake on dopamine neurons and causing a rush of dopamine.

• They block opioid receptors, preventing any dopamine release.

What is tolerance in the context of opioid use?

• The body's ability to completely stop feeling pain after taking opioids.

• The brain's response to regain balance by making it harder for dopamine neurons to release dopamine, requiring increased dosage for the same effect.

• The feeling of euphoria experienced after taking a high dose of opioids.

• The process by which the body naturally produces more endorphins to combat pain.

What happens to the brain's dopamine system during opioid withdrawal?

• Dopamine neurons release an excessive amount of dopamine, leading to euphoria.

• Inhibitory neurons become less active, allowing for normal dopamine release.

• Inhibitory neurons clamp down on dopamine neurons, shutting them off almost completely.

• The brain produces more opioid receptors to compensate for the lack of opioids.