# data[].attributes.body
Bailey, R. (2021). Cardiovascular System. https://www.thoughtco.com/cardiovascular-system-373577

Fowler, S., Roush, R. & Wise, J. (2021, January 12). Concepts of biology. Open Stax College.

Human Endocrine System. (n.d.). https://studylib.net/doc/10090572/human-endocrine-system

Human Reproductive System. (n.d.). https://www.dreamstime.com/human-reproductive-system-male-female-genitals-human-reproductive-system-male-female-genitals-inner-arterior-view-all-image141839237

Nanna, P. (2017). Understanding the respiratory system. https://guardian.ng/features/health/understanding-the-respiratory-system/

Rettner. R. & Dutfield, S. (2021). The Human Body: Anatomy, Facts & Functions. https://www.livescience.com/37009-human-body.html

Sendic, G. (2022). Musculoskeletal system. https://www.kenhub.com/en/library/anatomy/the-musculoskeletal-system

Tresca, A. (2021). Your Digestive System and How It Works. https://www.verywellhealth.com/your-digestive-system-and-how-it-works-1941716

Uvnäs-Moberg, K. (1989). The Gastrointestinal Tract in Growth and Reproduction. Scientific American, 261(1), 78–83. http://www.jstor.org/stable/24987325

# data[].attributes.body
The male reproductive system (MRS) is comprised of the testicles and the penis. Conversely, the female reproductive system (FRS) includes the vagina, uterus (womb), fallopian tubes, ovaries.

The systems are designed to create new life.

The testicles release testosterone, while the ovaries release progesterone and estrogen.

The reproductive system is directly connected to the endocrine system, which, during reproduction, elicits the release of testosterone (in males) and progesterone and estrogen (in women). The reproductive system is also connected to the gastrointestinal system (GIS). The proper function of the GIS is essential for reproduction and development (Uvnäs-Moberg, 1989).

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It is a defense mechanism that protects the body from diseases.

The main components of the Immune system are the " lymphatic system, white blood cells, antibodies, the complement system, the spleen, the thymus, and the bone marrow" (Campbell, 2020).

It comprises innate immunity, passive immunity, and adaptive immunity.

The immune system protects all the other systems. Failures in the immune system may cause any of the other systems to fail and consequently provoke a domino effect detrimental to life.

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Controls voluntary and involuntary sensations and motions like the visual or the motor systems (Fowler et al., 2021).

It comprises neurons and glia cells.

The brain and the spinal cord are part of the central nervous system.

The nervous system controls several body functions like the endocrine system through the hypothalamus and "the lungs, the heart, smooth muscle, and exocrine and endocrine glands" (Fowler, 2021).

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It comprises muscles, tendons, bones, joints; associated tissues (cartilage, ligaments, joint capsule, bursae) (Sendic, 2022).

It contributes to storing minerals, hematopoiesis, and carbohydrates (Sendic, 2022).

It provides body stability, support, movement, and shape. (Sendic, 2022).

The musculoskeletal system is connected to the somatic nervous system. allowing the body to move voluntarily. The musculoskeletal system is also connected to the circulatory system as muscles are part of the heart and the wall of blood vessels.

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Produces hormones essential for certain human functions.

It comprises the pancreas, pituitary gland, thyroid gland, parathyroid gland, and the adrenal glands (Fowler et al., 2021).

It mostly regulates the production and regulation of hormones through negative feedback.

The endocrine system works closely with the nervous system. They work jointly to control several organ functions.

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It is responsible for inhaling oxygen and exhaling carbon dioxide.

It regulates the amount of air that enters the lungs.

It has a defense mechanism to filter the inhaled air, preventing harmful elements from entering the body (Nanna, 2017).

According to Nanna (2017), the nose, cough, sneezing, bronchospasm are defense mechanisms the respiratory system uses to filter the material that enters the human body. This system delivers oxygen, which is then transported all over the body. There is no life (as we know it) without oxygen.

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It moves blood, oxygen, carbon dioxide, nutrients, and hormones throughout the body (Rettner & Dutfield, 2021).

It also helps remove waste (carbon dioxide) produced by cellular respiration (Bailey, 2021).

The heart, blood, and blood vessels are part of the circulatory system.

The respiratory and circulatory systems are well connected. Oxygen enters the respiratory system, which is then transferred throughout the body by the circulatory system (Fowler et al., 2021).

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Breaks down ingested food to transform it into useful material (Tresca, 2021).

It discards materials from food that are unnecessary for the body.

It contributes to 1) cells energy release, 2) the production of red blood cells, and 3) building bone, to mention a few (Tresca, 2021).

The digestive system (DS) is closely connected to the circulatory system (CS). Small molecules are transferred to "the bloodstream through the epithelial cells lining the walls of the small intestine" (Fowler, 2021). Such action is essential so those nutrients can reach other parts of the body.