Middle part of the sternum

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

Which entry is in the wrong position in the table?