Nerves and Synapses

The diagram shows a cell.

What type of cell is shown?

• ciliated cell

• motor neurone

• relay neurone

• sensory neurone

When a bright light is shone into the eye, the diameter of the pupil decreases.

What is this an example of?

• accommodation

• a simple reflex

• photosynthesis

• voluntary response

Tags

NGSS.HS-LS1-3

The diagram shows a neurone carrying an impulse.

Which row describes the type of neurone and the direction of impulse?

Which choice describes the type of neurone and the direction of impulse?

• type of neurone = motor; direction of impulse = towards the spinal cord

• type of neurone = motor; direction of impulse = away from the spinal cord

• type of neurone = sensory; direction of impulse = towards the spinal cord

• type of neurone = sensory; direction of impulse = away from the spinal cord

The diagram shows some of the muscles and bones of the human arm.

When muscle X contracts, what happens to the arm and what happens to muscle Y?

• arm bends; muscle Y contracts

• arm bends; muscle Y relaxes

• arm straightens; muscle Y contracts

• arm straightens; muscle Y relaxes

Tags

NGSS.MS-LS1-3

When a person is frightened, adrenalin is released by the adrenal glands.

What are the effects of the adrenalin?

• breathing rate decreased; heart beat rate decreased

• breathing rate decreased; heart beat rate increased

• breathing rate increased; heart beat rate decreased

• breathing rate increased; heart beat rate increased

Tags

NGSS.HS-LS1-3

The diagram shows the human nervous system.

Which letter indicates a part of the central nervous system?

• A

• B

• C

• D

Which list describes the correct sequence of a simple reflex arc?

• A receptor, relay neurone, motor neurone, sensory neurone, effector

• B receptor, relay neurone, sensory neurone, motor neurone, effector

• C receptor, sensory neurone, motor neurone, relay neurone, effector

• D receptor, sensory neurone, relay neurone, motor neurone, effector

The diagram shows a simple reflex arc.

Which labelled part is the sensory neurone?

• A

• B

• C

• D

Which statement about light receptors in the retina of a normal human eye is correct?

• The cones only work in dim light

• The rods are found in the fovea.

• There are three types of cone.

• There are three types of rod.

How can we best describe a nerve impulse?

• An electrical signal that passes along nerve cells called neurones

• A chemical signal that is transferred to an electrical signal

• An electrical charge that travels in nerve endings

• Brain's response to an unfavourable change