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What is an acrosome?

The prepuce of the penis is removed during this procedure:

The site of final sperm maturation (activation of the flagellum) occurs here:

Sperm production in the male begins _______________________ and continues ____________________.

Sustentacular cells (Sustentocytes) protect sperm from a male’s own immune system.

Chromosomes begin to separate during this step of mitosis:

____________________________ is the expulsion of sperm from the male penis caused by the rhythmic contraction of smooth muscle within the walls of ducts.

Prior to birth, the testes migrate through an opening in the abdominal wall called the inguinal canal.  This leaves a weakness in the abdominal wall that may result in an inguinal hernia.

Progesterone increases the likelihood of pregnancy by causing cervical mucus to become thin and watery.

Prior to birth, there is an opening between the right and left atrium called ____________________.  After birth it becomes the ____________________________.