Biology: Sexual Reproduction

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Questions and Answers

What is the scrotum?

A nerve that connects the testes to the brain

A type of hormone produced by the testes

A sac or pouch which holds the testes (correct)

A muscle that supports the testes

What is the main function of the scrotum?

To protect the testes from injury

To maintain the proper temperature of the testes (correct)

To produce hormones

To absorb nutrients from the bloodstream

What is contained within the scrotum?

The urethra

The testes (correct)

The epididymis

The prostate gland

What is the purpose of the scrotum's temperature regulation?

To aid in the production of sperm Signup and view all the answers

What is NOT a function of the scrotum?

To produce hormones Signup and view all the answers

What is the result of the fusion of ova and sperm?

A diploid zygote Signup and view all the answers

How many sets of chromosomes do gametes usually have?

One set Signup and view all the answers

What is the process by which the zygote develops into a large number of cells?

Mitotic divisions Signup and view all the answers

What is the term for the process of gamete formation?

Gamete formation Signup and view all the answers

What is the term for the fusion of ova and sperm?

Fertilization Signup and view all the answers

What is the stage of life when the reproductive system becomes active?

Puberty Signup and view all the answers

What is the term for the development of the embryo and fetus?

Development of the embryo and fetus Signup and view all the answers

What is the term for the process of producing haploid gametes?

Meiotic divisions Signup and view all the answers

What is the primary function of the ovary?

Producing female sex hormones Signup and view all the answers

Where does oogenesis take place?

In the ovary Signup and view all the answers

What is the site of female sex hormone production?

The ovary Signup and view all the answers

What is the term for the formation of egg cells?

Oogenesis Signup and view all the answers

What is produced in the ovary?

Female sex hormones Signup and view all the answers

What is the section of the urethra that passes through the prostate gland?

Prostatic urethra Signup and view all the answers

What is the function of the urethra in males?

To transport both urine and semen Signup and view all the answers

What is the urethra divided into?

Three sections: prostatic, membranous, and spongy Signup and view all the answers

What is the name of the urethra section that passes through the urogenital diaphragm?

Membranous urethra Signup and view all the answers

What is the last section of the urethra?

Spongy urethra Signup and view all the answers

Which hormone stimulates the release of an egg from the ovary?

FSH Signup and view all the answers

What happens to the follicles in the ovary each month?

One follicle matures and the others degenerate Signup and view all the answers

What is the term for the changes that occur in the ovary during the menstrual cycle?

Ovarian cycle Signup and view all the answers

Which hormones are involved in the regulation of the menstrual cycle?

Estrogen and Progesterone Signup and view all the answers

How many eggs are released from the ovary each month?

One Signup and view all the answers

Study Notes

Sexual Reproduction

Sexual reproduction involves meiotic divisions of germ cells producing haploid gametes (23 chromosomes) that fuse to form a diploid zygote (46 chromosomes).
The zygote undergoes mitotic divisions to produce a large number of cells that differentiate to form various tissues of the new individual.

Stages of Mammalian Reproduction

Gamete formation
Fertilization
Development of the embryo and fetus

The Reproductive System

Becomes active after puberty
Scrotum: a sac that holds the testes and maintains their proper temperature

The Urethra

Divided into three sections: prostatic urethra, membranous urethra, and spongy urethra

Ovary and Oogenesis

Ovary is the site of oogenesis and female sex hormone production
FSH (follicle-stimulating hormone) stimulates oocyte maturation and release of an ovum
One ovary releases an ovum each month, which is influenced by estrogen and progesterone hormones
Ovarian cycle concerns the changes in the ovary during the menstrual cycle

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Description

Learn about the processes of sexual reproduction, including meiotic divisions and the production of haploid gametes. Understand the role of chromosomes in this process.