Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites.
Many organisms live in and on our bodies. They're normally harmless or even helpful. But under
certain conditions, some organisms may cause disease. Some infectious diseases can be passed from
person to person. Some are transmitted by insects or other animals. And you may get others by
consuming contaminated food or water or being exposed to organisms in the environment. Signs and
symptoms vary depending on the organism causing the infection, but often include fever and fatigue.
Mild infections may respond to rest and home remedies, while some life-threatening infections may
need hospitalization.
Nutrition
The seven major classes of nutrients are carbohydrates, fats, fiber, minerals, proteins, vitamins, and
water. Nutrients can be grouped as either macronutrients or micronutrients (needed in small
quantities). Carbohydrates, fats, and proteins are macronutrients, and provide energy.
What are the 8 types of protein?
• Hormonal Protein. Hormones are protein-based chemicals secreted by the cells of the endocrine
glands.
Regular exercise and physical activity promote strong muscles and bones. It improves respiratory,
cardiovascular health, and overall health. Staying active can also help you maintain a healthy weight,
reduce your risk for type 2 diabetes, heart disease, and reduce your risk for some cancers.
Some fitness benefits are: • It Can Make You Feel Happier. • It Can Help with Weight Loss. • It Is Good for
Your Muscles and Bones. • It Can Increase Your Energy Levels. • It Can Reduce Your Risk of Chronic
Disease. • It Can Help Skin Health. • It Can Help Your Brain Health and Memory. • It Can Help with
Relaxation and Sleep Quality.
Some exercise that you can do are:
• Jogging • Walk • Play sports There are a lot of more exercise.
Reproductive system
The reproductive system or genital system is a system of sex organs within an organism which work
together for the purpose of sexual reproduction.
Male Reproductive system
The organs of the male reproductive system are specialized for three primary functions: To produce,
maintain, transport, and nourish sperm, and protective fluid. To discharge sperm within the female
reproductive tract. To produce and secrete male sex hormones.
Female Reproductive system:
The female reproductive system is designed to carry out several functions. It produces the female egg
cells necessary for reproduction, called the ova or oocytes. The system is designed to transport the ova
to the site of fertilization
immune system:
Is the bodily system that protects the body from foreign substances, cells, and tissues by producing the
immune response and that includes especially the thymus, spleen, lymph nodes, special deposits of
lymphoid, macrophages, lymphocytes including the B cells and T cells, and antibodies.
Ovarian cancer - Cancer of the ovary. Penile cancer - Cancer of the penis. Uterine cancer - Cancer of the
uterus.
Digestive system
The body system that converts food into energy and nutrients to fuel the body.
How does digestive system and excretory system maintain homeostasis?
After nutrients are absorbed during digestion, the excretory system removes solid waste products, or
feces, through the rectum. ... These three systems work together and maintain oxygen homeostasis by
making sure that CO2 is removed. The excretory system also maintains fluid homeostasis.
Nervous system:
The body system that collects, processes, and responds to information using electrical signals.
How does the nervous system and the endocrine system interact?
For one, the endocrine system uses chemical signaling (hormones, produced by glands) while the
nervous system uses electrical signaling (neural impulses). The signal transmission of the nervous
system is fast because neurons are interconnected, but the functions are more short-lived.
What is difference between nervous system and endocrine system?
Difference Between Nervous System and Endocrine System. One of the significant difference between
the nervous system and endocrine system is that the nervous system uses electrical impulses to send
messages through neurons while endocrine glands use hormones to send messages to the target cells
through the bloodstream.
Endocrine system:
The body system that regulates cells and organs using chemical substances called hormones.
Endocrine systemmain organs
The major glands of the endocrine system are the hypothalamus, pituitary, thyroid, parathyroids,
adrenals, pineal body, and the reproductive organs (ovaries and testes). The pancreas is also a part of
this system; it has a role in hormone production as well as in digestion.
Nervous system main organs
The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that
connect these organs with the rest of the body. Together, these organs are responsible for the control
of the body and communication among its parts.
Excretory system
The body system that removes metabolic wastes from the body.
Excretory System Organs.
The primary excretory organs in the human body are the kidneys, ureters and urinary bladder,
involved with the creation and expulsion of urine. Through these organs, much of the nitrogenous
waste of the body, especially urea, is expelled.
Digestive system main organs
The hollow organs that make up the GI tract are the mouth, esophagus, stomach, small intestine, large
intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system. The
small intestine has three parts.