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Magazine Chapter 12: Problem 3
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
1C, 2D, 3E, 4B, 5A
Step by step solution
01
Identify the Sensory Receptors
Review each sensory receptor's primary function. Chemoreceptors respond to chemical changes. Pain receptors detect damage or potential harm. Thermoreceptors are sensitive to temperature changes. Mechanoreceptors respond to mechanical forces like pressure and touch. Photoreceptors detect light stimuli.
02
Match Chemoreceptor
Chemoreceptors are involved in detecting chemicals, such as odors and tastes. Thus, the chemoreceptor matches with (C) the smell of roses.
03
Match Pain Receptor
Pain receptors, or nociceptors, respond to harmful stimuli that may cause damage. Therefore, the pain receptor is associated with (D) an infected tooth.
04
Match Thermoreceptor
Thermoreceptors detect temperature changes, such as heat or cold. Hence, the thermoreceptor corresponds with (E) a cool breeze.
05
Match Mechanoreceptor
Mechanoreceptors sense mechanical changes, like pressure, touch, and vibration. Thus, the mechanoreceptor matches with (B) a change in blood pressure.
06
Match Photoreceptor
Photoreceptors respond to light stimuli, making them responsible for vision. Therefore, the photoreceptor relates to (A) approaching headlights.
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Chemoreceptors
Chemoreceptors play a vital role in our sensory system by detecting chemicals in our environment. These receptors are keenly sensitive to specific chemical substances, allowing us to perceive taste and smell. For instance, when you enjoy the aroma of a freshly bloomed rose, chemoreceptors in your nose are at work. They bind to the various molecules released by the rose and send signals to the brain that are interpreted as a specific scent.
Chemoreceptors are also crucial for internal processes.
Chemoreceptors are also crucial for internal processes.
- They monitor the chemical composition of blood.
- This helps maintain homeostasis by regulating breathing and pH levels.
Pain Receptors
Pain receptors, also known as nociceptors, are specialized to protect the body from harm. These receptors are distributed throughout the body, ready to respond to potential threats such as sharp or hot objects, and injuries like infections. When you have an infected tooth, pain receptors are signaling that something is wrong, urging you to seek help.
Pain receptors are critical for survival:
Pain receptors are critical for survival:
- They help trigger reflexes that move the body away from danger.
- Send immediate alerts about damage or inflammation.
Thermoreceptors
Thermoreceptors are sensitive to temperature changes. Found in the skin and other parts of the body, they enable you to feel such sensations as warmth from a sunny day or the chill of a cool breeze. These receptors are pivotal in helping the body maintain its internal temperature, ensuring that it operates within the optimum range.
Thermoreceptors come in two main varieties:
Thermoreceptors come in two main varieties:
- Warm receptors, which respond to temperatures above the normal range.
- Cold receptors, which are activated by temperatures below normal body temperature.
Mechanoreceptors
Mechanoreceptors are intricate receptors that respond to mechanical changes in the environment or body. These receptors are especially skilled at detecting pressure, touch, vibration, and even stretch. They are how you perceive the feeling of your clothes brushing against your skin or the pressure of a tight grip.
Mechanoreceptors have several functions:
Mechanoreceptors have several functions:
- They are essential for proprioception, which is the sense of self-movement and body position.
- Help in regulating actions such as maintaining posture or a firm hold on objects.
Photoreceptors
Photoreceptors are the specialized cells found in the retina of the eyes that allow us to perceive light. When you see approaching headlights, it's your photoreceptors that are working to interpret the light into images. They consist of rods and cones, which serve different purposes:
- The rods are more sensitive to light and are crucial for vision in low-light conditions.
- The cones are responsible for detecting color and detail in brighter light.
