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Chapter 12: Problem 2

Match each sensory receptor to the type of stimulus to which it is likely to respond: (p. 444) (1) chemoreceptor A. approaching headlights (2) pain receptor B. a change in blood pressure (3) thermoreceptor C. the smell of roses (4) mechanoreceptor D. an infected tooth (5) photoreceptor E. a cool breeze

Short Answer

Expert verified
(1) C, (2) D, (3) E, (4) B, (5) A

Step by step solution

01

Identify Sensory Receptors

We have a list of sensory receptors: chemoreceptor, pain receptor, thermoreceptor, mechanoreceptor, and photoreceptor. We need to match each one to the most appropriate stimulus.
02

Match Chemoreceptor

Chemoreceptors respond to chemical stimuli. The smell of roses is a scent, which is a chemical stimulus. Therefore, a chemoreceptor matches with: (1) C. the smell of roses.
03

Match Pain Receptor

Pain receptors, also known as nociceptors, are triggered by damage or harm. An infected tooth can cause pain, so it activates pain receptors. Match the pain receptor with: (2) D. an infected tooth.
04

Match Thermoreceptor

Thermoreceptors are sensitive to changes in temperature. A cool breeze is a change in temperature, matching it with thermoreceptors. Therefore, the match is: (3) E. a cool breeze.
05

Match Mechanoreceptor

Mechanoreceptors respond to physical pressure or distortion. A change in blood pressure involves pressure changes in the body, fitting mechanoreceptors. Match with: (4) B. a change in blood pressure.
06

Match Photoreceptor

Photoreceptors are responsible for detecting light. Approaching headlights are a source of light, so they match with photoreceptors. Therefore, the match is: (5) A. approaching headlights.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Chemoreceptor
Chemoreceptors are fascinating sensory receptors that respond to chemical stimuli in the environment. They are the reason we can smell and taste, playing a pivotal role in how we perceive flavors and odors. These receptors detect molecules in the air or in our food, sending signals to the brain that interpret the type of chemical and its possible implications.
  • Location: Found primarily in the nose and mouth.
  • Function: Detects chemical cues such as the smell of flowers, like roses.
  • Importance: Helps in finding food, detecting dangers like smoke, and experiencing the world through taste and smell.
Next time you smell a freshly baked cookie or a blooming rose, you can thank your chemoreceptors!
Pain Receptor
Pain receptors, scientifically known as nociceptors, are critical for our survival. They alert us to potential harm by sending signals when they detect injury or inflammation. When you experience pain from an infected tooth or a sprain, it's these receptors at work.
  • Location: Distributed throughout the body, including skin, bones, and organs.
  • Function: Respond to extreme stimuli that might cause injury, such as heat, pressure, or chemical damage.
  • Importance: Provides protective reflexes and modifications in behavior to avoid injury.
Pain is an essential feedback mechanism that tells us something is wrong or needs our attention.
Thermoreceptor
Thermoreceptors are sensory receptors that detect changes in temperature, enabling us to feel warmth, cold, and sudden temperature shifts. They play a crucial role in maintaining body homeostasis and allowing us to adjust to different environments.
  • Location: Found in the skin and other tissues.
  • Function: Detects temperature changes, such as a cool breeze on a hot day.
  • Importance: Helps in regulating internal body temperature and initiating appropriate behavioral responses like seeking shade or warmth.
Next time you step outside and feel a change in weather, your thermoreceptors are actively telling your brain what to do.
Mechanoreceptor
Mechanoreceptors are sensitive to mechanical forces such as pressure, vibration, and touch. They help us interact with our environment by providing sensory information about physical interactions.
  • Location: Located in the skin, muscles, ear (for hearing), and other parts of the body.
  • Function: Detects mechanical changes, like those in blood pressure.
  • Importance: Allows us to feel textures, hear sounds, and maintain balance.
Without mechanoreceptors, our ability to perceive physical sensations and respond to our environment would be greatly impaired.
Photoreceptor
Photoreceptors are specialized sensory receptors found in the retina of the eyes, responsible for detecting and responding to light. They play a key role in our ability to see the world around us.
  • Location: Exclusively in the retina of the eyes.
  • Function: Responds to light changes, such as those from approaching headlights.
  • Importance: Contributes to vision by converting light into signals that can be interpreted by the brain.
Every time you catch sight of a sunset or a bright car headlight, it's your photoreceptors translating light into visual information for your brain.

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Most popular questions from this chapter

Explain the basis of fading senses of smell and taste with aging. (p. 482)

Match each sensory receptor to the type of stimulus to which it is likely to respond: (p. 444) (1) chemoreceptor A. approaching headlights (2) pain receptor B. a change in blood pressure (3) thermoreceptor C. the smell of roses (4) mechanoreceptor D. an infected tooth (5) photoreceptor E. a cool breeze

Define referred pain, and provide an example. (pp. 447 and 449)

Trace each step in the pathway from an olfactory receptor to the interpreting center of the cerebrum. (pp. 453-454)

Match the visual accessory organ with its function: (p. 468) (1) eyelid A. moves the eye (2) conjunctiva B. covers the eye (3) lacrimal gland C. lines the eyelids (4) extrinsic muscle D. produces tears
See all solutions

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