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Chapter 50: Problem 1

Which sensory receptor鈥攃ategory pair is correct? (A) hair cell鈥攏ociceptor (B) snake pit organ鈥攎echanoreceptor (C) taste receptor鈥攃hemoreceptor (D) olfactory receptor鈥攅lectromagnetic receptor

Short Answer

Expert verified
The correct pair is (C) taste receptor鈥攃hemoreceptor.

Step by step solution

01

Understand the Different Types of Sensory Receptors

Sensory receptors are specialized cells or cell structures that detect environmental changes. Let's look at the categories: - Nociceptors detect pain signals. - Mechanoreceptors respond to mechanical pressure or distortion. - Chemoreceptors detect chemical stimuli. - Electromagnetic Receptors detect electromagnetic energy such as light.
02

Identify the Pair Options Given

The options presented are: (A) hair cell鈥攏ociceptor(B) snake pit organ鈥攎echanoreceptor(C) taste receptor鈥攃hemoreceptor(D) olfactory receptor鈥攅lectromagnetic receptor
03

Evaluate Each Pair

Let's evaluate each pair: (A) Hair cells are involved in hearing and balance, not pain detection. This pair is incorrect.(B) Snake pit organs detect infrared radiation, which is not a form of mechanical pressure. Therefore, this pair is incorrect.(C) Taste receptors detect chemicals in foods and are classified as chemoreceptors. This pair is correct.(D) Olfactory receptors detect airborne chemicals, not electromagnetic energy. This pair is incorrect.
04

Determine the Correct Pair

Based on the evaluation, the correct sensory receptor鈥攃ategory pair is identified.

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Key Concepts

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

Chemoreceptors
Chemoreceptors are sensory receptors that detect chemical stimuli in the environment. They play crucial roles in processes such as taste and smell. For instance, taste receptors on the tongue sense various chemicals in foods and beverages. When chemicals bind to these receptors, they trigger responses that the brain interprets as different tastes like sweet, sour, salty, and bitter. Similarly, olfactory receptors in the nose detect airborne chemicals that we perceive as different smells. These chemical signals are converted into electrical signals that travel to the brain, allowing us to identify and differentiate fragrances and flavors.
Nociceptors
Nociceptors are specialized receptors that detect signals related to pain. They are found throughout the body, including the skin, muscles, and internal organs. When they detect potentially harmful stimuli, such as extreme temperatures, mechanical damage, or certain chemicals, they send signals to the spinal cord and brain. This process helps protect the body by initiating withdrawal from harmful situations. Nociceptors play a key role in the body's defense mechanism by making us aware of injury or potential harm, prompting appropriate reactions to avoid or minimize damage.
Mechanoreceptors
Mechanoreceptors respond to mechanical forces, such as pressure, vibration, and stretch. These receptors are widespread and are vital for our sense of touch, hearing, and balance. In the skin, mechanoreceptors help us feel textures and detect pressure changes. They also contribute to proprioception, which is our sense of body position and movement. In the ear, hair cells act as mechanoreceptors to detect sound waves, converting them into electrical signals that are interpreted as sound. Additionally, mechanoreceptors in the inner ear help us maintain balance and spatial orientation by detecting changes in head movements and body position.
Electromagnetic Receptors
Electromagnetic receptors detect electromagnetic energy, such as light. The most well-known electromagnetic receptors are the photoreceptors in our eyes, which include rods and cones. Rods are highly sensitive to low light levels and help us see in dim lighting, whereas cones detect color and are responsible for our ability to see in detailed, bright conditions. Some animals possess other forms of electromagnetic receptors. For example, certain fish have electroreceptors that allow them to detect electric fields generated by other organisms. This capability aids them in navigation, hunting, and communication within their environment.

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Most popular questions from this chapter

The transduction of sound waves into action potentials occurs (A) in the tectorial membrane as it is stimulated by hair cells. (B) when hair cells are bent against the tectorial membrane, causing them to depolarize and release neurotransmitter that stimulates afferent neurons. (C) as the basilar membrane vibrates at different frequencies in response to the varying volume of sounds. (D) within the middle ear as the vibrations are amplified by the malleus, incus, and stapes.
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