The speed of thinking in response to urgent situations depends on the transmission of nerve impulses. If thinking involves the creation of such impulses, the rapid transmission of these impulses among neurons facilitates quick and instinctive reactions, allowing the body ...
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Touching a flame is urgent and dangerous because it poses a threat of burning, causing harm to the body. It triggers a rapid and instinctive response to withdraw from the source of potential injury.
In everyday situations, the term ‘reflex’ implies responding to environmental changes without conscious thought or control. Actions like jumping away from a bus, pulling back from a flame, or salivating when hungry occur spontaneously as a quick, automatic response to ...
Yes, having a cold can lead to a similar situation where a blocked nose affects the sense of taste. The impairment in the sense of smell, which contributes significantly to taste, results in altered perceptions of food flavors.
(i) Information is acquired at the dendrites of a neuron. (ii) Information travels as an electrical impulse along the axon. (iii) The impulse is converted into a chemical signal at the synapse, where chemicals are released.
Nervous impulses are delivered to other cells through synapses. The chemicals released at the end of the axon cross the synapse and trigger similar impulses in the dendrites of the next neuron, allowing the transmission of signals to muscles or ...
The electrical impulse travels from the dendrite to the cell body and then along the axon. At the end of the axon, the impulse triggers the release of chemicals, which cross the synapse and initiate a similar electrical impulse in ...
Detection of touching a hot object occurs through specialized tips of nerve cells called receptors. These receptors, located in sense organs, initiate a chemical reaction at the dendritic tip of a nerve cell in response to environmental stimuli.
If progeny inherited a single whole gene set from each parent, the characteristics, such as ‘R’ and ‘y’, would be linked to each other and could not be independently inherited. This linkage would prevent the segregation and recombination of different ...
Germ cells undergo a process called meiosis, where they divide to produce cells with only one set of genes. This reduction in genetic material is essential for sexual reproduction, ensuring that the progeny receive a combination of genes from both ...