Domanda del libro di testo
Merkel cell fibers, tactile corpuscles, Ruffini endings, and lamellated corpuscles are all types of:
a. Nociceptors
b. Mechanoreceptors
c. Photoreceptors
d. Chemoreceptors
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13. The Peripheral Nervous System
Introduction to Sensory Receptors
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Which of the following statements about receptor potentials is false?
A
Receptor potentials are all-or-none responses.
B
Receptor potentials occur in sensory receptor cells.
C
Receptor potentials are graded responses to stimuli.
D
Receptor potentials can lead to the generation of action potentials.
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Understand the concept of receptor potentials: Receptor potentials are changes in the membrane potential of sensory receptor cells in response to stimuli.
Recognize that receptor potentials are graded responses: Unlike action potentials, receptor potentials vary in magnitude depending on the strength of the stimulus.
Identify the role of receptor potentials in sensory receptor cells: These potentials occur in sensory receptor cells and are crucial for converting external stimuli into electrical signals.
Learn how receptor potentials can lead to action potentials: If the receptor potential is strong enough, it can trigger an action potential in the sensory neuron, leading to signal transmission.
Evaluate the statement 'Receptor potentials are all-or-none responses': This statement is false because receptor potentials are graded, not all-or-none like action potentials.
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