plural of nervous system

plural of immune system

A hierarchy of values that all moral beings have, reflected in their choices. Most people's value systems differ. It's an individualistic concept. One's value system is molded by one's virtues or vices, and experiences.

A pushchair with detachable carrycot or car seat.

plural of travel system

plural of circulatory system

A group of related components that are part of a larger system.

(anatomy) Part of the human brain involved in emotion, motivation, and emotional association with memory; includes amygdala, cingulate gyrus, fornicate gyrus, hippocampus, hypothalamus, mammillary body, nucleus accumbens, orbitofrontal cortex and parahippocampal gyrus.

(biology) The systematic study of the complex interactions in biological systems / (by extension) The study of the self-organizing behaviour of complex, dynamic non-biological systems

(physiology) A control system of ductless glands that secrete hormones which circulate via the bloodstream to affect cells within specific organs.