Topic 14 MCQs

Which row of the table best summarises the parts of the nervous system?

• A

• B

• C

• D

Which of the following statements are reasons for the evolution of reflex arcs in the mammalian nervous system?

1. 1. To prevent harm or damage to an organism.

2. To provide a rapid response to dangerous situations.

3. To allow a degree of choice to an organism about response.

4. To allow certain stimuli to be ignored/eliminated.

• 1 and 3 only

• 1 and 2 only

• 1, 2 and 3

• 2, 3 and 4

Tags

NGSS.HS-LS4-4

Which row of the table best describes receptor organs and their respective stimuli in the human body?

• A

• B

• C

• D

The image shows a simple reflex arc.
Which of the following sequences correctly shows the order of cells that an impulse passes through during a reflex action (first → last)?

• Z → X → Y

• X → Y → Z

• Y → X → Z

• Z → Y → X

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-3

The image below shows a cell from the nervous system. The cell forms part of a reflex arc.

An impulse moves along the neurone from Q to P.

What structures would be found at P and Q?

• P: receptor

  Q: relay neurone

• P: relay neurone

  Q: receptor

• P: motor neurone

  Q: relay neurone

• P: gland

  Q: relay neurone

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-3

The image shows the structures involved in a simple reflex arc.

Which of the following sequences correctly shows the order that an impulse passes through during a reflex action?

• S → U → V → T

• S → T → U → V

• S → V → U → T

• T → V → U → S

Four statements are given below.

1. 1. Neurotransmitters are released from vesicles.

2. An impulse is generated in the postsynaptic neurone.

3. An impulse arrives at the end of a neurone.

4. Neurotransmitters diff use across the synaptic cleft.

Which of the following options correctly describes the sequence of events that occurs at a synapse?

• 1 → 2 → 3 → 4

• 2 → 4 → 1 → 3

• 2 → 1 → 4 → 3

• 3 → 1 → 4 → 2

In which pathway do nerve impulses travel in a spinal reflex?

• effector →

  sensory neurone →

  relay neurone →

  receptor →

  motor neurone

• motor neurone →

  relay neurone →

  sensory neurone →

  effector

• receptor →

  sensory neurone →

  effector →

  relay neurone →

  motor neurone

• receptor →

  sensory neurone → relay

  neurone →

  motor neurone → effector

Where are relay neurones situated?

• effector

• spinal cord

• spinal nerve

• receptor

A nerve impulse travels from a fingertip to the spinal cord in 0.02 s. This is a distance of 1.4 meters. The speed of the impulse is:

• 0.7 m.s^-1

• 7 m.s^-1

• 70 m.s^-1

• 170 m.s^-1