Which one of the following statements about sense receptors is true?
A)Chemicals, light and pressure
convert stimuli into electrical
implses.
B) Electrical impulses within the nerve pathways trigger an awareness of stimuli in the sensory receptors
C)Sensory receptors are located in the body's "command center" (the brain)
D) Sensory receptors are the primary cause of the common condition called synesthesia.
I am confused between A and B
Think of what stimuli are - external factors that have an effect on the body. The receptors 'feel' the stimuli. Read A again - what are chemicals, light, and pressure? Can they convert stimuli? Read B again - can receptors become aware of stimuli?
Receptors are responsible for transduction, converting stimuli to electrical impulses, e.g., rods and cones in the eye.
The correct statement is A) Chemicals, light, and pressure convert stimuli into electrical impulses.
Sense receptors, also known as sensory receptors, are specialized cells or organs that respond to various types of stimuli, such as chemicals, light, pressure, temperature, etc. When these receptors are activated by the stimuli, they convert the sensory information into electrical impulses that can be transmitted to the brain or central nervous system. This process is essential for the perception and awareness of stimuli in our environment.
To determine which statement is true between A and B, let's break them down and analyze them individually:
A) "Chemicals, light, and pressure convert stimuli into electrical impulses."
This statement is true. When a stimulus, such as chemicals, light, or pressure, interacts with sensory receptors (like taste buds, photoreceptors in the eyes, or mechanoreceptors in the skin), it triggers a series of events that ultimately result in the generation of electrical impulses. These impulses are then transmitted along nerve pathways.
B) "Electrical impulses within the nerve pathways trigger an awareness of stimuli in the sensory receptors."
This statement is also true. Once the electrical impulses are generated in response to a stimulus, they travel through nerve pathways to reach the brain. In the brain, these electrical signals are processed, interpreted, and ultimately lead to an awareness or perception of the original stimulus.
Now, to determine which statement is true between A and B, we can compare their components. Statement A describes the conversion of stimuli into electrical impulses, which is indeed a fundamental process in sensory receptor function. Statement B follows this process and describes how the electrical impulses trigger an awareness of stimuli in the sensory receptors.
Therefore, both statements A and B are true.