Examlex
Describe the structure of the sperm and the process of fertilization, including how polyspermy is prevented.
Pain Receptors
Specialized nerve endings that transduce pain stimuli into nerve signals that are interpreted by the brain as the sensation of pain.
Anticipation
The act of expecting or predicting something to happen based on prior knowledge or cues.
Sensations
The immediate experiences generated from the stimulation of sensory organs by external stimuli.
Substance P
A neuropeptide involved in the transmission of pain and other sensory signals to the brain, also implicated in inflammatory processes and mood regulation.
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