Chapter 27: The Reproductive System

From the lumen of the ________, the immotile sperm are surrounded by testicular fluid and moved to the epididymis (plural= epididymides), a coiled tube attached to the testis where newly formed sperm continue to mature.

The first menses after puberty, called ________, can occur either before or after the first ovulation.

In males, secretions from ________ trigger a degradation of the female duct, called the Müllerian duct.

The process that begins with ________ and concludes with the production of sperm is called spermatogenesis.

The ________ are referred to collectively as the vulva.

The ovaries are the ________.

is the stage of development at which individuals become sexually mature.

At the same time, testosterone secretion stimulates growth of the male tract, the

In males, secretions from sustentacular cells trigger a degradation of the female duct, called the

The first menses after puberty, called

The _ is the narrow inferior portion of the uterus that projects into the vagina.

The middle section of the uterus is called the ___ (or corpus).

The portion of the uterus superior to the opening of the uterine tubes is called the

The middle region of the tube, called the

is the narrow medial end of each uterine tube that is connected to the uterus.

(also called fallopian tubes or oviducts) serve as the conduit of the oocyte from the ovary to the uterus

Follicles in which the antrum has become large and fully formed are considered

A thick fluid, called follicular fluid, that has formed between the granulosa cells also begins to collect into one large pool, or

After puberty, a few primordial follicles will respond to a recruitment signal each day, and will join a pool of immature growing follicles called

Primordial follicles have only a single flat layer of support cells, called

are present in newborn females and are the prevailing follicle type in the adult ovary

The process begins with the ovarian stem cells, or

Gametogenesis in females is called

is a set of predictable changes in a female’s oocytes and ovarian follicles.

This grouping of an oocyte and its supporting cells is called a

Each of the two larger lateral chambers is called a __ (plural = corpora cavernosa).

The ovaries are located within the pelvic cavity, and are supported by the mesovarium, an extension of the peritoneum that connects the ovaries to the

is a thin membrane that sometimes partially covers the entrance to the vagina.

(labia = “lips”; majora = “larger”) are folds of hair-covered skin that begin just posterior to the mons pubis.

is a pad of fat that is located at the anterior, over the pubic bone. After puberty, it becomes covered in pubic hair.

Testosterone, an androgen, is a steroid hormone produced by

The skin from the shaft extends down over the glans and forms a collar called the

, has a high concentration of nerve endings, resulting in very sensitive skin that influences the likelihood of ejaculation.

which can be felt as a raised ridge on the erect penis, is a smaller chamber that surrounds the spongy, or penile, urethra.

The ductus deferens is a thick, muscular tube that is bundled together inside the scrotum with connective tissue, blood vessels, and nerves into a structure called the

During ejaculation, sperm exit the tail of the epididymis and are pushed by smooth muscle contraction to the

transforms these early spermatids, reducing the cytoplasm, and beginning the formation of the parts of a true sperm.

The process that begins with spermatogonia and concludes with the production of sperm is called

(singular = spermatogonium), line the basement membrane inside the tubule.

Surrounding all stages of the developing sperm cells are elongate, branching

is a specialized sex cell carrying 23 chromosomes one half the number in body cells.

At fertilization, the chromosomes in one male gamete, called a

The testes are located in a skin-covered, highly pigmented, muscular sack called the

A(n) ________, called follicular fluid, that has formed between the granulosa cells also begins to collect into one large pool, or antrum.

(singular = testis) are the male gonads that is, the male reproductive organs.

If no ________ occurs, the lining of the uterus is shed, resulting in a menstrual period.