Chapter 6: Vision

Chapter 6: Vision

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

Multiple-Choice Questions

6.1-1.  In the opening vignette of this chapter, Mrs. R. suffered a stroke that impaired her ability to

1. read and to write.
2. recognize objects via the sense of touch.
3. speak.
4. recognize objects via the sense of vision.
5. walk up stairs.

Difficulty: 1

Question ID: 6.1-1

Page Ref: 165

Topic:  Opening Vignette

Skill: Factual

Answer: d. recognize objects via the sense of vision.

Rationale: In the opening vignette of this chapter, Mrs. R suffered a stroke that impaired her ability to recognize objects via the sense of vision.

6.1-2.  A sensory receptor is specialized for the

1. detection of physical events.
2. coordination of movement of the hands and fingers.
3. detection of specific chemicals released from other neurons.
4. detection of neurohormones in the blood.
5. detection of electrical changes in nearby neurons.

Difficulty: 1

Question ID: 6.1-2

Page Ref: 165

Topic:  Introduction

Skill: Factual

Answer: a. detection of physical events.

Rationale: A sensory receptor is specialized for the detection of physical events.

6.1-3.  A sensory receptor is a variant of a(n)

1. axon terminal.
2. neuron.
3. motor cell.
4. muscle fiber.
5. skin cell.

Difficulty: 1

Question ID: 6.1-3

Page Ref: 165

Topic:  Introduction

Skill: Factual

Answer: b. neuron.

Rationale: Sensory receptors are specialized neurons.

6.1-4.  The human visual system is specialized to detect

1. infrared radiation.
2. electromagnetic radiation between 380 and 760 nm.
3. ultraviolet radiation.
4. all wavelengths of light.
5. electrical charges associated with light particles.

Difficulty: 1

Question ID: 6.1-4

Page Ref: 166

Topic:  The Stimulus

Skill: Factual

Answer: b. electromagnetic radiation between 380 and 760 nm.

Rationale: The human visual system is specialized to detect electromagnetic radiation between 380 and 760 nm.

6.1-5. Which of the following is true of the process of sensory transduction?

1. Receptors show action potentials to external stimuli.
2. The intensity of an external stimulus is related to the firing rate of the receptor.
3. An external stimulus is converted into changes in receptor membrane potential.
4. Most receptors show an action potential when stimulated with an external stimulus.
5. Transduction refers to the speed at which a sensory message travels toward the brain.

Difficulty: 2

Question ID: 6.1-5

Page Ref: 166

Topic:  Introduction

Skill: Conceptual

Answer: c. An external stimulus is converted into changes in receptor membrane potential.

Rationale: Sensory transduction involves the conversion of an external stimulus into changes in receptor membrane potential.

6.1-6.  Visible light includes electromagnetic radiation with a wavelength of 600

1. meters.
2. decimeters.
3. millimeters.
4. micrometers.
5. nanometers.

Difficulty: 1

Question ID: 6.1-6

Page Ref: 166

Topic:  The Stimulus

Skill: Factual

Answer: e. nanometers.

Rationale: Visible light includes electromagnetic radiation with a wavelength of 600 nanometers.