The human abdomen (also called the belly or midriff) is the part of the body between the pelvis and the thorax. Anatomically, the abdomen stretches from the thorax at the thoracic diaphragm to the pelvis at the pelvic brim. The pelvic brim stretches from the lumbosacral angle (the intervertebral disk between L5 and S1) to the pubic symphysis and is the edge of the pelvic inlet. The space above this inlet and under the thoracic diaphragm is termed the abdominal cavity.
In mammals, the adrenal glands (also known as suprarenal glands) are the triangular-shaped endocrine glands that sit on top of the kidneys. They are chiefly responsible for releasing hormones in conjunction with stress through the synthesis of corticosteroids and catecholamines, including cortisol and adrenaline (epinephrine), respectively.
The stomach is a hollow, muscular organ of the digestive tract. It is involved in the second phase of digestion, following mastication (chewing). The stomach is located between the esophagus and the small intestine. It secretes protein-digesting enzymes and strong acids to aid in food digestion, and also churns food via peristalsis before sending partially-digested food to the small intestines.
The peritoneum is the serous membrane that forms the lining of the abdominal cavity or the coelom — it covers most of the intra-abdominal (or coelomic) organs — in higher vertebrates and some invertebrates. It is composed of a layer of mesothelium supported by a thin layer of connective tissue. The peritoneum both supports the abdominal organs and serves as a conduit for their blood and lymph vessels and nerves.
The spleen is an organ found in virtually all vertebrate animals with important roles in regard to red blood cells and the immune system. In humans, it is located in the left upper quadrant of the abdomen. It removes old red blood cells and holds a reserve in case of hemorrhagic shock, especially in animals like horses (not in humans), while recycling iron.
The abdominal cavity is the body cavity of the human body (and animal bodies) that holds the bulk of the viscera. It is located below the thoracic cavity, and above the pelvic cavity. It is a part of the abdominopelvic cavity. Organs of the abdominal cavity include the stomach, liver, gallbladder, spleen, pancreas, small intestine, kidneys, and large intestine. The abdominal cavity is lined with a protective membrane termed the peritoneum.
In anatomy, a viscus is an internal organ, and viscera is the plural form. The viscera, when removed from a butchered animal, are known collectively as offal. Internal organs are also known as "innards", or less formally, "guts" (which may also refer to the gastrointestinal tract). The adjective visceral, also splanchnic, is used for anything pertaining to the internal organs.
O aparelho digestivo ou digestório ou ainda sistema digestório é o sistema que, nos humanos, é responsável por obter dos alimentos ingeridos os nutrientes necessários às diferentes funções do organismo, como crescimento, energia para reprodução, locomoção, etc. É composto por um conjunto de órgãos que têm por função a realização da digestão.
In human anatomy, the ureters are muscular tubes that propel urine from the kidneys to the urinary bladder. In the adult, the ureters are usually 25–30 cm (10–12 in) long and ~3-4 mm in diameter. The ureters arise from the renal pelvis on the medial aspect of each kidney before descending towards the bladder on the front of the psoas major muscle. The ureters cross the pelvic brim near the bifurcation of the iliac arteries (which they run over).
The cardia is the anatomical term for the part of the stomach attached to the esophagus. The cardia begins immediately distal to the z-line of the gastroeosphageal junction, where the squamous epithelium of the esophagus gives way to the columnar epithelium of the gastrointestinal tract.. Just proximal to the cardia at the gastroesophageal (GE) junction is the anatomically indistinct but physiologically demonstrable "lower esophageal sphincter".
The navel (clinically known as the umbilicus, also known as the belly button) is a scar on the abdomen, caused when the umbilical cord is removed from a newborn baby. All placental mammals have a navel. It is fairly conspicuous in humans. In humans, the scar can appear as a depression (often referred to colloquially as an innie) or as a protrusion (outie).
Gastric cancer can develop in any part of the stomach and may spread throughout the stomach and to other organs; particularly the esophagus, lungs, lymph nodes, and the liver. Stomach cancer causes about 800,000 deaths worldwide per year.
Situated along the perimeter of the adrenal gland, the adrenal cortex mediates the stress response through the production of mineralocorticoids and glucocorticoids, including aldosterone and cortisol respectively. It is also a secondary site of androgen synthesis.
The inguinal canal is a passage in the anterior (toward the front of the body) abdominal wall which in men conveys the spermatic cord and in women the round ligament. The inguinal canal is larger and more prominent in men.
Navel lint, or more commonly belly button lint, belly button fluff, button lint or navel fluff, is an accumulation of fluffy fibres in one's navel. Many people find that, at the beginning and end of the day, a small lump of fluff has appeared in the navel cavity. The reasons for this have been the subject of idle speculation for many years but in 2001, Dr. Karl Kruszelnicki of the University of Sydney, Australia, undertook a systematic survey to determine the ins and outs of navel lint.
In anatomy, the mesentery is the double layer of peritoneum that suspends the jejunum and ileum from the posterior wall of the abdomen. Its meaning, however, is frequently extended to include membranous folds connecting various components of the abdominal cavity.
The waist is the part of the abdomen between the rib cage and hips. On proportionate people, the waist is the narrowest part of the torso. Waistline refers to the horizontal line where the waist is narrowest, or to the general appearance of the waist. People who diet are often said to be trying to "improve" their waistline. Women tend to have narrower waists than men. In Arabic waist وسط which means the middle of body
The peritoneal cavity is a potential space between the parietal peritoneum and visceral peritoneum, that is, the two membranes that separate the organs in the abdominal cavity from the abdominal wall. It is one of the spaces derived from the coelomic cavity of the embryo, the others being the pleural cavities around the lungs and the pericardial cavity around the heart. The peritoneal cavity is the largest serosal sac in the body and secretes approximately 50 ml of fluid per day.
The epigastrium (or epigastric region) is the upper central region of the abdomen. It is located between the costal margins and the subcostal plane. The epigastrium is one of the nine anatomical regions of the abdomen, along with the right and left hypochondria, right and left lateral regions (or flanks), right and left inguinal regions (or fossae), and the umbilical and pubic regions.