Abdominal Quadrants Organs

What are the Abdominal Quadrants Organs?

Abdominal Quadrants Organs

Abdominal Quadrants Organs

The abdominal quadrants organs are those which assist the body in life sustaining functions.  Some organs have individual functions, while others are dependent on the function of others.

The heart is the core of all functions, by regulating the circulatory system, keeping all other organs alive and working in the body.

Abdominal quadrants organs may appear in more than one quadrant, depending on the location and size of the organ.  Using the quadrants system makes it easier to pinpoint what organ could be involved in causing pain, or abnormalities.  Below is a brief description and location of the abdominal quadrants organs.

Right Upper Quadrant Organs

Liver – The liver is located below the diaphragm, and is necessary for detoxification, protein synthesis, and production of biochemicals necessary for digestion.  It plays a major role in metabolism, glycogen storage, decomposition of red blood cells, plasma protein synthesis, hormone production, and production of bile to aid in digestion.  The medical terminology relating to the liver is hepato- or hepatic, from the Greek word for liver.

Gall Bladder (cholecyst, biliary vesicle) – This small organ aids in fat digestion and concentrates the bile which is produced by the liver.  The biliary tree refers to, and describes the bile ducts.

Duodenum – This is the shortest part of the small intestine, and is where most chemical digestion of food takes place.  It comes before the jejunum, or the mid-section of the small intestine, and the ileum, which is the final section of the small intestine.  It is a main site for iron absorption.

Pancreas – A gland organ in the digestive and endocrine system, the pancreas produces hormones such as insulin, glucagon and somatostatin.  It is a digestive organ, secreting pancreatic juice which contains enzymes to assist in absorbing nutrients.  The enzymes produced by the pancreas help to break down carbohydrates, proteins, and lipids.  The head of the pancreas lies within the depression in the duodenum.

Left Upper Quadrant Organs

Stomach – The stomach is a muscular, and hollow organ which is located between the esophagus, and the small intestine.  The stomach secretes enzymes and strong acids to digest food and proteins, through muscular contractions, before sending partially digested food to the small intestines.  The Greek words gastro- and gastric, are medical terms pertaining to the stomach.

Spleen – This organ removes old red blood cells, while reserving blood, in case of hemorrhagic shock, where there is massive blood loss.  It also recycles iron, and plays an important role in the body’s immune system.

Kidney – Kidneys are essential in the urinary system.  They regulate electrolyte balance, maintain the acid to base balance in the system, and play an important role in regulating blood pressure.  They filter the blood, removing wastes, which are then sent to the urinary bladder.  Renal physiology is the study of kidney function, and nephrology specializes in kidney diseases.

Heart – The heart is the generator of all other organ functions.  The heart is a muscular organ responsible for pumping blood through blood vessels using rhythmic contractions.  It is composed of cardiac muscle and connective tissue, and is enclosed in a sac called the pericardium.  The heart consists of four chambers which are two atria, and two ventricles.  The heart is the core of the circulatory system, supplying the body with oxygen and many other important nutrients necessary to sustain life.

Right Lower Quadrant Organs

Appendix (vermiform appendix, cecal, or vermix) – The appendix is a tube connected to the cecum, a pouch like structure of the colon.  It is located near the intersection of the small and large intestines, and is considered to be a vestigial structure, or one which has lost most of its original function.  Some scientists believe however, that the appendix may store and protect bacteria which are beneficial in the function of the colon.

Right Ovary – The ovaries secrete estrogen and progesterone.  The paired ovaries are within the pelvic cavity, and are on either side of the uterus.  These reproductive organs are connected to the fallopian tubes, which lead from the ovaries into the uterus.

Ureter – The ureter is a muscular tube that propels urine from the kidneys to the urinary bladder, for later elimination.

Left Lower Quadrant Organs

Small Intestine – The small intestine is part of the gastrointestinal tract where much of the digestion and absorption of food occurs.  There are three sections to the small intestine:  the duodenum, the jejunum, and the ileum.  The small intestine digests three types of nutrients, which are proteins, lipids or fats, and carbohydrates.

Colon – The colon is the last part of the digestive system.  The colon extracts water, and salt from solid wastes, before eliminating it from the body.  Bacterial fermentation of unabsorbed materials happens here.  There are four sections of the colon, which are the ascending, transverse, descending, and sigmoid.  These sections are named by location and relationship to the other abdominal quadrants organs.

Note:  The abdominal quadrants organs listed above are only listed once, but may appear again in another quadrant.

Abdominal Quadrants


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