Question 1

What is an effector?

Accepted Answer

A muscle or gland that responds to a stimulus

Answer

A coordinator that receives and processes information

Answer

A cell that detects changes in the environment

Answer

A change in the environment

Question 2

How do nervous impulses cross a synapse?

Accepted Answer

By chemicals diffusing

Answer

They leap the gap

Answer

Along a relay neurone

Answer

Via a reflex arc

Question 3

What is the central nervous system (CNS) composed of?

Accepted Answer

Both the brain and spinal cord

Answer

Brain only

Answer

Spinal cord, brain and skin

Answer

Spinal cord and skin

Question 4

Which pathway shows how nerve impulses travel in a reflex action?

Accepted Answer

stimulus → receptor → sensory neurone → spinal cord → motor neurone → effector → response

Answer

stimulus → receptor → motor neurone → spinal cord → sensory neurone → effector → response

Answer

receptor → stimulus → sensory neurone → spinal cord → motor neurone → effector → response

Answer

receptor → stimulus → sensory neurone → motor neurone → spinal cord → effector → response

Question 5

Which of the following is an example of a voluntary action?

Accepted Answer

Speaking

Answer

Swallowing

Answer

Coughing

Answer

Breathing

Question 6

Which is not controlled by homeostasis in the human body?

Accepted Answer

External body temperature

Answer

Blood salt concentration

Answer

Water content of the body

Answer

Internal body temperature

Question 7

Which sense organ will have the highest concentration of chemical receptors?

Accepted Answer

Nose

Answer

Skin

Answer

Ear

Answer

Eye

Question 8

Charlotte sits in a dark room. Suddenly, a light is turned on. Which is a response to this stimulus?

Accepted Answer

Muscles in the eye contract to change the shape of the iris

Answer

Nervous impulses are sent along neurones

Answer

Her brain detects the increase in light

Answer

Light receptors in her eye are stimulated

Question 9

A person damages the motor nerves in their arm. What symptoms might they experience?

Accepted Answer

They can feel pain but are unable to move their arm.

Answer

They can feel pain and move their arm.

Answer

They cannot feel pain or move their arm.

Answer

They cannot feel pain but can move their arm.

Question 10

Heroin is a powerful painkiller. Suggest how heroin affects the transmission across the synapses to reduce the feeling of pain.

Accepted Answer

Heroin reduces the release of neurotransmitters.

Answer

The heroin neurotransmitter causes more electrical impulses to be stimulated.

Answer

Heroin increases the release of neurotransmitters.

Answer

Heroin causes more receptors to be available for the neurotransmitter.

Related quizzes

Related quizzes