the innermost, light-sensitive layer of tissue of the eye of most vertebrates and some molluscs


often motile gamete which fertilizes the egg in sexual reproduction


lipid biomolecule synthesized by all animal cells; an essential component of animal cell membranes


the opening of the GI tract where solid waste is expelled


one of a set of lymphoid organs facing into the aerodigestive tract, which play an important role in the immune system


colourless, watery, coagulable bodily fluid which bathes the tissues and is carried by the lymphatic system into the bloodstream; it resembles blood plasma in containing…


neurotransmitter that plays several important roles in the brain and body, involved in motor control, hormone release, and perceived desirability or aversiveness of behaviors


a monoamine neurotransmitter with a complex function, modulating mood, cognition, reward, learning, memory, and numerous physiological processes such as vomiting and vasoconstriction

Cerebral palsy

Cerebral palsy (CP) is a group of permanent movement disorders that appear in early childhood