Examlex
At the moment of conception, how many chromosomes does a healthy zygote contain?
Hormones
Chemical messengers produced by the endocrine glands, these compounds regulate various physiological functions and behaviors.
Neurotransmitters
Chemical messengers in the body that transmit signals from nerve cells to target cells.
Chemical Messengers
Substances in the body that transmit signals from one cell to another, often referred to as hormones or neurotransmitters.
Special Receptors
Unique sensory cells located throughout the body that respond to specific stimuli like light, sound, or pressure.
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