A person can have ________________________ taste buds in their mouth.

Freud believed that dreams ________________________. 

The four stages of sexual activity include excitement, plateau, orgasm and ____________________________. 

Sex organs and traits that develop at puberty and are only indirectly involved in human reproduction are called ____________________________ sex characteristics. 

The nervous system is defined as ________________________. 

The brain and spinal cord are two components of the ________________________. 

A biological cycle, or rhythm, that is approximately 24 hours long is called a(n) ________________________ cycle.

The bone that is situated next to the eardrum is called the ________________________; the bone that sits next to the oval window is called the ________________________. 

The ________________________ is a structure in the brain stem responsible for life-sustaining functions, such as breathing and heart rate.

Which of the following is the BEST description of proprioception?