Reproductive System

Reproductive System

Reproductive and Endocrine System Overview

Open Ended

What do you know about the reproductive system?

How will knowing about the reproductive system improve your health?

Reproduction

• Reproduction: is the formation of new individuals

• The reproductive system produces, stores, and releases specialized sex cells called gametes

• Sexual reproductive systems allows organisms to produce offspring that receive half of their genetic information from their mother and half from their father

Multiple Choice

Based on the picture from the last slide, how many chromosomes from each parent will an offspring receive?

• 46

• 23

• 92

• 11.5

Female Reproductive System

• The primary reproductive organs in females are the ovaries.

• The main function of the female reproductive system is to produce ova

Egg Development and Release

• Each ovary has about 400,000 primary follicles (clusters of cells that surround each cell)

• Normally 1 egg is released about every 28 days

• Ovulation- is the process when an egg cell is released

Egg Development and Release Cont.

• The egg is released and enters the fallopian tube

• The egg is moved along by cilia

• After a few days the egg passes to the uterus

• If the egg is fertilized, it attaches to the lining of the uterus.

• If not fertilized the egg passes through the vagina and then out of the body

Open Ended

What is the main purpose of the female reproductive system?

Multiple Choice

The main reproductive organ in the female reproductive system is the ova.

• True

• False

Open Ended

Briefly explain what occurs once an egg becomes fertilized.

Multiple Choice

Sex cells of females that can be fertilized by sperm

• ovaries

• eggs or ovum

• uterus

Multiple Choice

Reproductive organs that produce eggs, progesterone and estrogen

• cervix

• vagina

• ovaries

Male Reproductive System

• The primary male reproductive organ is called testicles.

• The primary function of the male reproductive system is to produce and deliver sperm

• The testes are in an external sax called the scrotum The temperature in the scrotum is about 3 degrees lower than the rest of the body

• The temperature in the scrotum is about 3 degrees lower than the rest of the body

• The lower temperature is needed for sperm development

Sperm Development and Release

• Sperm are haploid cells

• Sperm are produced in the seminiferous tubules and stored in the epididymis 

• Some sperm move into the vas deferens and then to the urethra

• The sperm follow the urethra through the penis and then out of the body.

Sperm Development and Release Cont.

• Glands lining the reproductive tract produce seminal fluid:

• Provides nourishment for the sperm

• Protects the sperm from the high acidity of the female reproductive tract

• Semen- combination of sperm and seminal fluid

• 1 ml of semen has between 50-130 million sperm

• The autonomic nervous system prepares the male organs to deliver sperm

Open Ended

What is the main purpose of the male reproductive system?

Multiple Choice

The main reproductive function are the testicles.

• True

• False

Multiple Choice

Sperm are produced in the

• Bladder

• Testes

• Scrotum

• Ovaries

Multiple Choice

The meeting of a sperm and ovum.

• Intercourse
• Implantation
• Conception
• Fertilization

Endocrine System

Overview of Components of Endocrine System

Endocrine System Overview

• The endocrine system is made up of glands that release hormones into the bloodstream

• Uses these hormones to deliver messages throughout the body

• helps regulate the body in order to maintain homeostasis, or a steady balance of chemicals

Open Ended

What is the function of the endocrine system?

Endocrine System Components

• Hormones are chemicals released in one part of the body that travel through the bloodstream to affect other parts of the body

• Different hormones work on different cells-

• Hormones bind to specific chemical receptors on target cells

• The body responses to hormones are slower and last longer compared to nerve impulses

Open Ended

What roles do hormones and glands play on the health of an individual? Explain in detail.

Endocrine System Components

• A gland is an organ that produces and releases a substance (hormone)

• Pituitary Gland-

• Regulates growth

• Secretes nine hormones that regulates the actions of other glands

• Reproductive Glands-

• Ovaries: Produce eggs and secrete sex hormones

• Testes: Produce sperm and secrete sex hormones

Open Ended

Compare and contrast the difference between the pituitary, adrenal and thyroid gland. Include the purpose and location of each type of gland in your response.

Multiple Choice

The "master gland" is known as the __________________.

• thyroid gland.

• adrenal gland.

• pancreas.

• pituitary gland.

Multiple Choice

What is the endocrine system?

• A system of vessels that circulates blood around the body.

• A group of bones and tissue that provides support and structure for the body.

• A group of glands that work together with the nervous system to coordinate all body functions

• A group of organs that is responsible for eliminating wastes.

Multiple Choice

Endocrine glands secrete _

• Hormones

• Neurotransmitters

• A wide range of chemical substances

Open Ended

Compare and contrast the difference between the endocrine system and the reproductive system.

Poll

I am able to describe the function of the male and female reproductive system.

• Yes

• No

• I wasn't paying attention

• I need to review a little more

Poll

I am able to describe the function of the endocrine system.

• Yes

• No

• I wasn't paying attention

• I need to review a little more