1) Uterine contractions that are irregular and brief that occur toward the end of gestation are called ________.

2) The hollow cavity within the blastocyst is the ________.

3) The process by which a viable embryo is formed is called ________.

4) Eighty percent of nephrons in the human kidney are located in the ________ and have short nephron loops.

5) The amount of ?ltrate produced by the kidneys each minute is called the ________.

6) The ________ is a capillary plexus that parallels the nephron loop (loop of Henle).

7) A ________ consists of a combination of a weak acid and its associated anion.

8) A ________ acid is an acid that can leave solution and enter the atmosphere.

9) Spermatids mature into spermatozoa by the process of ________.

10) The portion of the urethra that passes through the prostate is called the ________.

11) The organs of milk production are ________.

12) Events in the ?rst 12 weeks of gestation establish the basis for ________, the process of organ formation.

13) The ________ stage is the stage of labor during which the placenta is expelled from the uterus.

14) The ________ provides mechanical protection, nutritional support, and waste removal for the developing embryo.

15) The original 46 chromosomes and their component genes constitute an individual's ________.

16) The painful condition that develops because endometrial tissue is present in the peritoneal cavity is ________.

17) The cell that results from the fusion of a secondary oocyte and a spermatozoon is called a ________.

18) The subsidence of an erection after ejaculation is known as ________.

19) A zygote whose genotype is XY will develop as a ________.

20) The shallow recess that surrounds the cervical protrusion into the vagina is called the ________.