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Circulatory SystemTransport BloodEndocrineProduce HormonesDigestive SystemBreak down FoodsLymphatic SystemProtect Against InfectionsNervous SystemRespond to Emotional StressRespiratory SystemSupply Blood with OxygenSkeletal SystemSupports the Body

Your heart and blood vessels make up thecirculatory system. The main function of thecirculatory system is to provide oxygen, nutrientsand hormones to muscles, tissues and organsthroughout your body. Another part of thecirculatory system is to remove waste from cells andorgans so your body can dispose of it. Your heart pumps blood to the body through anetwork of arteries and veins (blood vessels). Yourcirculatory system can also be defined as yourcardiovascular system. Cardio means heart, andvascular refers to blood vessels.The circulatory system provides blood to all the body's tissues so they canfunction. The circulatory system (cardiovascular system) pumps blood from theheart to the lungs to get oxygen. The heart then sends oxygenated bloodthrough arteries to the rest of the body. The veins carry oxygen-poor bloodback to the heart to start the circulation process over. Your circulatorysystem is critical to healthy organs, muscles and tissues.OverviewWhat is the circulatory system?FunctionWhat does the circulatory system do?The circulatory system’s function is to move blood throughout the body. Thisblood circulation keeps organs, muscles and tissues healthy and working to keepyou alive.The circulatory system also helps your body get rid of waste products. This wasteincludes:Carbon dioxide from respiration (breathing).Other chemical byproducts from your organs.Waste from things you eat and drink.

How does the circulatory system work?Your circulatory system functions with the help of blood vessels thatinclude arteries, veins and capillaries. These blood vessels work with yourheart and lungs to continuously circulate blood through your body. Here’show:1.The heart’s bottom right pumping chamber (right ventricle) sends bloodthat’s low in oxygen (oxygen-poor blood) to the lungs. Blood travels throughthe pulmonary trunk (the main pulmonary artery).2.Blood cells pick up oxygen in the lungs.3.Pulmonary veins carry the oxygenated blood from the lungs to the heart’sleft atrium (upper heart chamber).4.The left atrium sends the oxygenated blood into the left ventricle (lowerchamber). This muscular part of the heart pumps blood out to the bodythrough the arteries.5.As it moves through your body and organs, blood collects and drops offnutrients, hormones and waste products.6.The veins carry deoxygenated blood and carbon dioxide back to the heart,which sends the blood to the lungs.Your lungs get rid of the carbon dioxide when you exhale.AnatomyWhat are the circulatory system parts?The parts of your circulatory system are your:Heart, a muscular organ that pumps blood throughout your body.Blood vessels, which include your arteries, veins and capillaries.Blood, made up of red and white blood cells, plasma and platelets.What are the circulatory system circuits?Your circulatory system has three circuits. Blood circulates through your heart and throughthese circuits in a continuous pattern:The pulmonary circuit: This circuit carries blood without oxygen from the heart to thelungs. The pulmonary veins return oxygenated blood to the heart.The systemic circuit: In this circuit, blood with oxygen, nutrients and hormonestravels from the heart to the rest of the body. In the veins, the blood picks up wasteproducts as the body uses up the oxygen, nutrients and hormones.The coronary circuit: Coronary refers to your heart’s arteries. This circuit providesthe heart muscle with oxygenated blood. The coronary circuit then returns oxygen-poorblood to the heart’s right upper chamber (atrium) to send to the lungs for oxygen.

What are the types of blood vessels?There are three main types of blood vessels:Arteries: Arteries are thin, muscular tubes that carry oxygenated blood awayfrom the heart and to every part of your body. The aorta is the body’s largestartery. It starts at the heart and travels up the chest (ascending aorta) and thendown into the stomach (descending aorta). The coronary arteries branch off theaorta, which then branch into smaller arteries (arterioles) as they get fartherfrom your heart.Veins: These blood vessels return oxygen-depleted blood to the heart. Veinsstart small (venules) and get larger as they approach your heart. Two centralveins deliver blood to your heart. The superior vena cava carries blood from theupper body (head and arms) to the heart. The inferior vena cava brings blood upfrom the lower body (stomach, pelvis and legs) to the heart. Veins in the legshave valves to keep blood from flowing backward.Capillaries: These blood vessels connect very small arteries (arterioles) andveins (venules). Capillaries have thin walls that allow oxygen, carbon dioxide,nutrients and waste products to pass into and out of cells.What are the circulatory system organs?Your heart is the only circulatory system organ. Blood goes from the heart to thelungs to get oxygen. The lungs are part of the respiratory system. Your heart thenpumps oxygenated blood through arteries to the rest of the body.Supplements:- Tissues Salt Number 1 >>Vitamins and Minerals Vitamin B3SeaweedHerbsMistletoeComfreyCayenne PepperGingko

Your endocrine system consists of the tissues(mainly glands) that create and release hormones.Hormones are chemicals that coordinate differentfunctions in your body by carrying messagesthrough your blood to your organs, skin, musclesand other tissues. These signals tell your body whatto do and when to do it. Hormones are essential forlife and your health.Your endocrine system consists of the tissues(mainly glands) that create and release hormones. Your endocrine system is in charge of creating and releasing hormonesto maintain countless bodily functions. Endocrine tissues include yourpituitary gland, thyroid, pancreas and others. There are several conditionsrelated to endocrine system issues — usually due to a hormone imbalance orproblems directly affecting the tissue.OverviewWhat is the endocrine system?FunctionWhat is the function of the endocrine system?The main function of your endocrine system is to release hormones into yourblood while continuously monitoring the levels. Hormones deliver their messagesby locking into the cells they target so they can relay the message. You have morethan 50 different hormones, and they affect nearly all aspects of your health —directly or indirectly. Some examples include:Metabolism.Homeostasis (constant internal balance), such as blood pressure and bloodsugar regulation, fluid (water) and electrolyte balance and body temperature.Growth and development.Sexual function.Reproduction.Sleep-wake cycle.Mood.Very small amounts of hormones can trigger significant responses and changes inyour body. If your body has too little or too much of a hormone, it affects yourhealth. This often causes noticeable symptoms.

AnatomyWhat are the endocrine system organs?Your endocrine system consists of three types of tissues:Endocrine glands.Organs.Endocrine-related tissues.Endocrine system glandsGlands are special tissues in your body that create and release substances.Endocrine glands make and release hormones directly into your bloodstream. Theendocrine glands in your body from head to toe include:Pineal gland: This is a tiny gland in your brain that’s beneath the back part ofyour corpus callosum. It makes and releases the hormone melatonin.Pituitary gland: This is a small, pea-sized gland at the base of your brainbelow your hypothalamus. It releases eight hormones, some of which triggerother endocrine glands to release hormones.Thyroid gland: This is a small, butterfly-shaped gland at the front of your neckunder your skin. It releases hormones that help control your metabolism.Parathyroid glands: These are four pea-sized glands that are typically behindyour thyroid. Sometimes they exist along your esophagus or in your chest(ectopic parathyroid glands). They release parathyroid hormone (PTH), whichcontrols the level of calcium in your blood.Adrenal glands: These are small, triangle-shaped glands on top of each ofyour two kidneys. They release several hormones that manage bodilyprocesses, like metabolism, blood pressure and your stress response.You have other glands in your body that aren’t endocrine glands, such as sweatglands (a type of exocrine gland).Endocrine system organsCertain organs in your body also make and release hormones. An organ is a groupof tissues that form a structure that performs specific important functions in yourbody. The organs that are part of your endocrine system include:

Hypothalamus: This is a structure deep within your brain (which is an organ).It’s the main link between your endocrine system and your nervous system. Itmakes two hormones that your pituitary gland stores and releases (oxytocinand vasopressin) and makes and releases two hormones (dopamine andsomatostatin).Pancreas: This organ is in the back of your abdomen (belly). It’s both an organand a gland and is also part of your digestive system. It releases two hormonesthat are essential to maintaining healthy blood sugar levels: insulin andglucagon.Adipose tissue (body fat): This is a connective tissue that extends throughoutyour body. It’s found under your skin (subcutaneous fat), between your internalorgans (visceral fat) and in the inner cavities of bones (bone marrow adiposetissue). Adipose tissue releases many different hormones, including leptin,angiotensin and adiponectin.Ovaries: These are small, oval-shaped glands located on either side of youruterus. They produce and store your eggs (also called ova) and make sexhormones that control your menstrual cycle and pregnancy.Testicles (testes): These are small, round organs underneath your penis inyour scrotum. They make sperm and sex hormones, particularly testosterone.Other tissues that release hormonesOther tissues in your body release hormones. But we don’t typically think of themas endocrine system tissues because they have other, more significant functions orroles. They include:Digestive tract (stomach and small intestine): Your digestive tract is the largestendocrine-related organ system. It makes and releases several hormones thatplay a role in your metabolism. Examples include gastrin and ghrelin.Kidneys: Your kidneys are two bean-shaped organs that filter your blood.They’re part of your urinary system, but they also produce hormones, likeerythropoietin and renin.Liver: Your liver is part of your digestive system, but it also produceshormones, including insulin-like growth factor 1 (IGF-1) and angiotensinogen.Heart: When your blood pressure rises, your heart releases two hormonescalled A-type natriuretic peptide and B-type natriuretic peptide.Placenta: The placenta is a temporary endocrine organ that forms duringpregnancy. It produces hormones that are important for maintaining a healthypregnancy and preparing your body for labor and breastfeeding (chestfeeding).

Your digestive system is a network of organs thathelp you digest and absorb nutrition from your food.It includes your gastrointestinal (GI) tract and yourbiliary system. Your GI tract is a series of holloworgans that are all connected to each other, leadingfrom your mouth to your anus. Your biliary system isa network of three organs that deliver bile andenzymes through to your GI tract your bile ducts.Your digestive system involves many organs. Someprocess food, and others process digestivesubstances, like bile. The food you eat takes an incredible journey through your body, from top(your mouth) to bottom (your anus). Along the way the beneficial parts of yourfood are absorbed, giving you energy and nutrients. Here’s a step-by-stepaccount of the digestive system’s workings.OverviewWhat is the digestive system?FunctionGastrointestinal (GI) tractThe organs that make up your GI tract, in the order that they are connected,include your mouth, esophagus, stomach, small intestine, large intestine and anus.Biliary systemYour biliary system includes your liver, gallbladder, pancreas and bile ducts.What does the digestive system do?Your digestive system is uniquely constructed to do its job of turning your food intothe nutrients and energy you need to survive. And when it’s done with that, ithandily packages your solid waste, or stool, for disposal when you have a bowelmovement.Why is digestion important?Digestion is important because your body needs nutrients from the food you eatand the liquids you drink in order to stay healthy and function properly. Nutrientsinclude carbohydrates, proteins, fats, vitamins, minerals and water. Your digestivesystem breaks down and absorbs nutrients from the food and liquids you consumeto use for important things like energy, growth and repairing cells.

AnatomyWhat organs make up the digestive system?The main organs that make up your digestive system are the organs known asyour gastrointestinal tract. They are: your mouth, esophagus, stomach, smallintestine, large intestine and anus. Assisting your GI organs along the way are yourpancreas, gallbladder and liver.Here’s how these organs work together in your digestive system.Mouth The mouth is the beginning of the digestive tract. In fact, digestion starts beforeyou even take a bite. Your salivary glands get active as you see and smell that pastadish or warm bread. After you start eating, you chew your food into pieces that aremore easily digested. Your saliva mixes with the food to begin to break it downinto a form your body can absorb and use. When you swallow, your tongue passesthe food into your throat and into your esophagus.Esophagus Located in your throat near your trachea (windpipe), the esophagus receivesfood from your mouth when you swallow. The epiglottis is a small flap that foldsover your windpipe as you swallow to prevent you from choking (when food goesinto your windpipe). A series of muscular contractions within the esophagus calledperistalsis delivers food to your stomach.But first a ring-like muscle at the bottom of your esophagus called the loweresophageal sphincter has to relax to let the food in. The sphincter then contractsand prevents the contents of the stomach from flowing back into the esophagus.(When it doesn’t and these contents flow back into the esophagus, you mayexperience acid reflux or heartburn.)Stomach The stomach is a hollow organ, or "container," that holds food while it is beingmixed with stomach enzymes. These enzymes continue the process of breakingdown food into a usable form. Cells in the lining of your stomach secrete a strongacid and powerful enzymes that are responsible for the breakdown process. Whenthe contents of the stomach are processed enough, they’re released into the smallintestine.

Small intestine Made up of three segments — the duodenum, jejunum, and ileum — the smallintestine is a 22-foot long muscular tube that breaks down food using enzymesreleased by the pancreas and bile from the liver. Peristalsis also works in thisorgan, moving food through and mixing it with digestive juices from the pancreasand liver. The duodenum is the first segment of the small intestine. It’s largely responsiblefor the continuous breaking-down process. The jejunum and ileum lower in theintestine are mainly responsible for the absorption of nutrients into thebloodstream. Contents of the small intestine start out semi-solid and end in a liquid form afterpassing through the organ. Water, bile, enzymes and mucus contribute to thechange in consistency. Once the nutrients have been absorbed and the leftover-food residue liquid has passed through the small intestine, it then moves on to thelarge intestine (colon).Pancreas The pancreas secretes digestive enzymes into the duodenum that break downprotein, fats and carbohydrates. The pancreas also makes insulin, passing itdirectly into the bloodstream. Insulin is the chief hormone in your body formetabolizing sugar.Liver The liver has many functions, but its main job within the digestive system is toprocess the nutrients absorbed from the small intestine. Bile from the liversecreted into the small intestine also plays an important role in digesting fat andsome vitamins. The liver is your body's chemical "factory." It takes the raw materials absorbedby the intestine and makes all the various chemicals your body needs to function.The liver also detoxifies potentially harmful chemicals. It breaks down andsecretes many drugs that can be toxic to your body.Gallbladder The gallbladder stores and concentrates bile from the liver, and then releases itinto the duodenum in the small intestine to help absorb and digest fats.