Exam 23: The Reproductive Systems

An excessively prolonged or profuse menstrual period is called menorrhagia.

During early fetal development, germ cells in the ovaries differentiate into oogonia.

All of the following structures are part of the penis EXCEPT the

Enzymes used by sperm cells to penetrate an ovum during fertilization are located in the

The initial secretion of estrogens by the growing ovarian follicles is directly stimulated by

During the production of secondary oocytes by oogenesis, meiosis II is completed

Human gametes are produced using meiosis in order to reduce the number of chromosomes to half the number that the other cells have.

The hormone that works with estrogen to prepare the endometrium for implantation of a fertilized egg is

The process of spermatogenesis occurs in the

Increased secretion of the hormone labeled _____ in the diagram stimulates the onset of puberty.

All of the following are true for meiosis EXCEPT

Approximately 60 percent of the volume of semen is produced by the

The beginning of menstruation or the first menses in females is called

In which of two labeled locations on the diagram would the steroid hormone called testosterone fit?

The circular pigmented area of skin surrounding the nipple of the mammary gland is called the

Semen has a slightly alkaline pH.

Human spermatids contain ___ chromosomes.

The region of a mature sperm cell that contains large numbers of mitochondria to produce ATP for locomotion is called the

Absence of menstruation is called

Amenorrhea and dysmenorrhea are medical terms that both mean lack of menstruation.