Leukocytes that respond to nonspecific foreign invaders are called while respond to specific invaders.

Leukocytes that respond to nonspecific foreign invaders are called Phagocytosis while Lymphocytes respond to specific invaders.

Explanation:

Phagocytosis: It is process where phagocytes are engulfed or ingest foreign particles. Phagocytes are may be body cells like white blood cell or may be free living single celled organism.

Leukocytes, they are involved in the process of ingestion of particles, pathogen recognition, pathogen distraction and antigen presentation.

Lymphocytes are also white blood cells which is main type of immune cell in body. They are synthesized in bone marrow and present in the lymph and blood tissues. Lymphocyte main function is, they are the part of immune defense, and they are producing antibodies by recognition of the antigen.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )