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https://www.cincinnatichildrens.org/health/e/endocrine publication #258.

https://my.clevlandclinic.org/health/body/21196-immune-system

https//medlineplus.gov//ency/imagepages/8747,htm

“Your Digestive System and How It Works”- IFFGD publication #190, from NIH Publication No. 04-2681, May 2004; and IFFGD

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Both male and female systems can make the smallest sperm and largest ovum cells in the body.

The female reproductive system includes the ovaries, vagina, uterus, vagina and vulva.

The reproductive system produces gametes or eggs secreting sex hormones.

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Female Reproductive System: Structure & Function

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The female reproductive system consists of internal and external body parts that help you reproduce, menstruate and have sex.

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The immune system is a complex network of proteins, organs, and cells that protect the body from changes and infections.

When the immune system detects a strange invader it then produces something called immunoglobulin E (LGE) antibodies.

A healthy immune system can help with sleep, and good sleep, in turn, can help the immune system.

Bone marrow is part of the immune system

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The nervous system acts like the body's command center and sends messages or electrical signals between the brain and the rest of the body.

the system regulates complex things like memory and thoughts. The system plays an important role in blinking, blushing, and even sweating.

The nervous system can send messages faster than it takes us to have a thought

There are 4 types of neurons: sensory, motor, somatic, and autonomic. sensory deliver electrical signals from the outer body to the central nervous system, and motor carry from the central system to the outer body.

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The bones of the skeletal system protect the body’s internal organs, support the weight of the body, and serve as the central storage system for calcium and phosphorus.

The human body has 206 bones and 650 muscles'.

Muscles work with the circulatory and respiratory systems as it needs lots of resources to work efficiently

The primary functions of the skeletal muscles are to produce movement, sustain posture, store nutrients

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The endocrine system is a messenger system that regulates organs by releasing hormones directly into the circulatory system.

The hypothalamus is the control center for all endocrine systems in vertebrates.

The endocrine system moves hormones through the body. They are important functions, including growth, metabolism, and reproduction, to name a few.

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*The respiratory system is what allow

us to breathe. It includes the lungs,

mouth, and airways that connect them.

There are muscles and bones that support the respiratory system; for example, our rib cage protects our organs.

The main function of the respiratory system is to pull in oxygen for the body cells and remove carbon dioxide

The respiratory system warms the air you breathe to match your body's temperature.

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The circulatory system provides the brain with a consistent supply of oxygen-rich blood while the brain regulates your heart rate and blood pressure.

The system removes waste from cells and organs

There are different blood vessels. There are arteries, capillaries, and veins.

Common conditions are heart disease, high blood pressure, stroke

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The digestive system is a group of organs working together to convert food into energy and feed the entire body.

The digestive system works with the cardiovascular system as the passage of digested molecules passes through the capillary walls to be transported by blood throughout the body.

The digestive system has several stages. they are

Ingestion, propulsion, mechanical digestion, chemical digestion, absorption and defecation.

That is the process of eating food, the movement of food, the breakdown of that food, and then the removal of the food.