tract in Biological Definition

Escherichia coli

... When the bacteria get out of the intestinal tract and into the urinary tract , they can cause an infection sometimes referred ... of bacteria into the bladder. However urinary tract infection is seen in both males and females and ...

Muscle

... body hair) to the blood vessels and digestive tract (in which it controls the caliber of a lumen and ... before being relayed through the pyramidal tract to the spinal cord and from there to the ... affecting blood vessels , the respiratory tract (e.g. asthma ), the digestive system (e.g. ...

Cancer

... (in tissues such as skin or the mucous membranes of the digestive tract ). Normally the balance between proliferation and cell death is tightly ... Carcinomas originate in epithelial cells , e.g. skin , digestive tract or glands . Leukemia starts in the bone marrow stem cells . ...

Ebola

... both internal and external, commonly through the gastrointestinal tract . Death or recovery to convalescence occurs within six to ten days. ... bleeding from the mucous membranes , skin , eyes , or gastrointestinal tract . The patient may also be going into shock (has a systolic blood ...

Insulin

... insulin cannot be taken orally. It is treated in the gastrointestinal tract precisely as any other protein; that is, reduced to its amino acid ... underway to develop methods of protecting insulin from the digestive tract so that it can be taken orally, but none has yet reached clinical use. ...

Kidney

... hydronephrosis renal dysplasia Congenital obstruction of urinary tract horseshoe kidney duplicated ureter Acquired diseases of the ... of the kidneys and is frequently caused by complication of a urinary tract infection . Azotemia is a toxic condition characterized by abnormal ...

Anatomy

... Neck Scalp Skin Teeth Tongue Other anatomic terms (not classified): Artery Coelom Diaphragm Gastrointestinal tract Hair Exoskeleton Lip Nerve Peritoneum Serous membrane Skeleton Skull Spinal cord Vein See also ...

Antibody

... (7%) and IgG4 (4%). IgA IgA represent about 15 to 20% of immunoglobulins in the blood although it is primarily secreted across the mucosal tract into the stomach and intestines . It is also found in maternal milk , tears and saliva . This immunoglobulin helps to fight against pathogens ...

Biomechanics

... to a refractory period between twitches. Smooth Muscle (smooth - lacking striations) The stomach, vasculature, and most of the digestive tract are largely composed of smooth muscle. This muscle type is involuntary and is controlled by the enteric nervous system. Viscoelasticity ...

Capacitation

... move normally and look mature prior to capacitation. In vivo this final step typically occurs after ejaculation , in the female reproductive tract . In vitro , capacitation can occur in sperm that have either undergone ejaculation or have been extracted from the epididymis . Non-mammalian ...

Digestion

... 2 Digestive organs 3 Digestive hormones 4 Digestion in plants and fungi Human digestion See: Gastrointestinal tract In humans, digestion begins in the mouth where food is chewed with the teeth . The process stimulates exocrine glands in the mouth to ...

Fungus

... skin . pH of the skin, mucosal surfaces and body fluids Epithelial turnover Normal flora Transferrin Cilia of respiratory tract . When fungi do pass the resistance barriers of the human body and establish infections, the infections are classified according to the tissue ...

Liver

... of the liver (primary hepatocellular carcinoma or cholangiocarcinoma and metastatic cancers, usually from other parts of the gastrointestinal tract ) Wilson's disease , a hereditary disease which causes the body to retain copper Primary sclerosing cholangitis , an inflammatory ...

Symbiosis

... and endosymbiosis . In ectosymbiosis, the symbiont lives on the body surface of the host, including the inner surface of the digestive tract or the ducts of exocrine glands. In endosymbiosis, the symbiont lives in the intracellular space of the host. An example of mutual symbiosis is ...

Yellow fever

... In a proportion of cases there is also involvement of internal organs - liver, kidneys and the heart. There may be hemorrhage from the digestive tract (bloody vomit). Later the disease is sometimes complicated by jaundice with liver failure and/or renal insufficiency with proteinuria. If the disease ...