Three social and psychological factors that influence how much and when people eat

How is the structure of our circulatory system and respiratory system related to the function of both these systems?

Which description best defines the nervous system and its two main branches? a: the message center of the body, split into the autonomic nervous system and the somatic nervous system b: the control panel of the body, split into the central nervous system and the exterior nervous system c: the message center of the body, split into the central nervous system and the peripheral nervous system d: the control panel of the body, split into the brain and the spinal cord

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.