___________ are non-self molecules that trigger a response by B and T lymphocytes.

Following ovulation, the ruptured follicle in the ovary undergoes changes to become the __________ and secretes hormones. 

Matching: Match each term with its description. 

_________ is a coiled tube where sperm mature. 

__________ helps nerve impulses travel faster on long axons. 

Cells in the _______ divide to form sperm. 

Describe the events that take place during a single respiratory cycle (inhalation and exhalation). Include information regarding changes in air pressure and the muscles involved.  

True or False: The urethra is part of the male urinary and reproductive systems. 

___________ are molecules that trigger a fever.

Which statement regarding antibodies is correct?