Individual A’s 23rd pair of chromosomes is XX. Individual A is _____.

A basic nerve cell in the central nervous system is called a(n) “_____.”

Any consequence that follows a behavior and makes a person likely to repeat that behavior is called a(n) “_____.

_____ is the thick, high-calorie fluid that is secreted by a new mother’s breasts in the days immediately following birth.

The ______ is composed of the ethmoid bone and vomer.

Tissue death is called:

Body weight is stable when average daily energy intake and output are equal. 

A cation is positive.

What is the red arrow pointing at?  

Name the specific structure pointed to by the black arrow.