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Undifferentiated spermatogenic cells are called:


Copy of Undifferentiated spermatogenic cells are called:


The hormone responsible for the development and maintenance of male secondary sexual characteristics is:


The hormone mainly responsible for the development and maintenance of female secondary sexual characteristics is:


The tubular portion of the uterus that extends downward into the upper part of the vagina is the:


Meiosis occurs during:

Both spermatogenesis and oogenesis.

In spermatogenesis, meiosis results in the formation of:

Four sperm cells with 23 chromosomes each.

In the female reproductive cycle, menstrual flow occurs when the concentrations of:

Estrogen and progesterone are low

The tightly coiled tube that leads to the vas deferens is the:


Which of the following is an egg cell that can be fertilized to produce a zygote?

Secondary oocyte

The endometrium is the inner layer of the:


A Pap smear is used to detect the presence of abnormal cells in the:


Women athletes sometimes experience disturbances in their menstrual cycles because of:

decreased synthesis of estrogens

Many women should have their breasts examined with mammography at regular intervals after the age of:


The secretions of the prostate gland function to neutralize acidic semen.


The movement of an egg down a uterine tube is aided by ciliary action.


FSH stimulates a primordial follicle to start the maturation process.


A blood PSA test is used to detect:

Abnormal cell growth in the prostate.

After a vasectomy, a male will no longer produce semen.


Sperm development is negatively affected at body temperature so the sperm develop in the scrotum which a few degrees cooler than the rest of the body.


A sudden surge in the hormone luteinizing hormone at approximately day 14 causes ovulation.


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