Reflex Actions Quiz

What is the name of the actions that you perform without even thinking?

• Intentional actions

• Voluntary actions

• Conscious actions

• Reflex actions

What is a well-known reflex action?

• Scratching

• Knee jerk

• Sneezing

• Blinking

What do the stretch sensors in the muscle detect during a reflex action?

• Temperature change

• Pressure change

• length change

• Slow movement

What is the speed of the nervous impulse during a reflex action?

• A thirtieth of a second

• One second

• One-tenth of a second

• One-hundredth of a second

What is the pathway taken by a nervous impulse during a reflex action called?

• Nerve route

• Spinal journey

• Brain path

• Reflex arc

What does the nervous impulse bypass during a reflex action?

• Muscles

• Spinal cord

• Brain

• Nerves

Why do reflex actions happen so quickly?

• They travel by the fastest route

• They involve the brain

• They travel by the longest route

• They involve conscious thinking

What do scientists use to work out the speed of the response during a reflex action?

• Stopwatch

• Ruler

• Thermometer

• Oscilloscope

What is the name of the impulse travels in an arc through the spinal cord during a reflex action?

• Nerve impulse

• Spinal impulse

• Reflex impulse

• Brain impulse

What causes the muscle to contract during a reflex action?

• Electrical activity

• Physical pressure

• Chemical reaction

• Temperature change