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Rectum
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Rectum An 8-inch chamber connected to the large intestine that receives solid waste (feces) from the descending colon to be expelled from the body. The rectum connects the colon to the anus. It is the rectum's job to receive stool from the colon, to let the person know that there is stool to be evacuated, and to hold the stool until evacuation happens.
RELATED TERMS--------------------------------------
Intestine
The tube involved in digestion and extending from the stomach to the anus. Consists of the small intestine and the large intestine.
Colon
Another name for the large intestine. The section of the large intestine extending from the cecum to the rectum. An adult colon is approximately five to six feet in length and is responsible for absorbing water and forming, storing and expelling waste.
Rectum
An 8-inch chamber connected to the large intestine that receives solid waste (feces) from the descending colon to be expelled from the body. The rectum connects the colon to the anus. It is the rectum's job to receive stool from the colon, to let the person know that there is stool to be evacuated, and to hold the stool until evacuation happens.
Anus
The opening at the end of the rectum of the alimentary canal through which feces are discharged. The anus has erotosexual potential in both sexes.
Stool
The solid wastes that pass through the rectum as bowel movements. Stools are undigested foods, bacteria, mucus, and dead cells. Also called feces.
SIMILAR TERMS--------------------------------------
Rectal manometry
A test that uses a thin tube and balloon to measure pressure and movements of the rectal and anal sphincter muscles. Usually used to diagnose chronic constipation and fecal incontinence.
Rectal prolapse
A condition in which the rectum slips so that it protrudes from the anus.
Rectal ultrsound
Rectal ultrsound refers to a system produces high-frequency sound waves to provide imaging and information about the staging of cancers of the rectum.
Rectocele
Condition in which weakening of the lower vaginal wall causes the rectum to bulge into the vagina.
PREVIOUS AND NEXT TERMS--------------------------------------
RNA
Ribonucleic acid. A long-chain, usually single-stranded. The primary function of RNA is protein synthesis within a cell. However, RNA is involved in various ways in the processes of expression and repression of hereditary information. The three main functionally distinct varieties of RNA molecules are: (1) messenger RNA (mRNA) which is involved in the transmission of DNA information, (2) ribosomal RNa (rRNA) which makes up the physical machinery of the synthetic process, and (3) transfer RNA (tRNA) which also constitutes another functional part of the machinery of protein synthesis.
Ribonucleic acid
RNA. The generic term for polynucleotides, similar to DNA but containing ribose in place of deoxyribose and uracil in place of thymine. These molecules are involved in the transfer of information from DNA, programming protein synthesis and maintaining ribosome structure. The 4 main types of RNA are heterogeneous nuclear RNA (hRNA), messenger RNA (mRNA), transfer RNA (tRNA) and ribosomal RNA (rRNA).
Receptor
A molecule that recognizes a unique hormone. Once that hormone is bound to the receptor, the information carried by the hormone can now exert its biological action.
Retina
A membrane lining the inside of the back of the eye that contains light-sensitive nerve cells that convert focused light into nerve impulses, making vision possible.
Recessive gene
A gene that is inferior to another gene that controls the same trait (the dominant gene). The inferior gene does not get expressed in the presence of a dominant gene.
Rectum
Rheumatism
A general disease characterized by painful, often multiple, local inflammations, usually affecting the joints and muscles, but also extending sometimes to the deeper organs, as the heart.
Retinitis Pigmentosa (RP)
A hereditary condition resulting in degeneration of the retina; causes a narrowing of the field of vision. The visual field loss often begins as a donut like ring in mid-periphery. As it progresses both centrally and peripherally, the resultant tunnel vision begins to affect the patient’s activities, driving and mobility.
Rheumatoid arthritis
Rheumatoid arthritis is a chronic disease that is of unknown cause and is characterized by pain, stiffness, inflammation, swelling and sometimes destruction of joints.
Rigidity
Rigidity is an increased resistance to the passive movement of a limb.
Rickets
A disorder of childhood characterised by defective bone and mineralisation, where characteristic lower limb bowing or bending occurs. Other outward signs of rickets can be the so-called rachitic rosary on the ribs, and thickened wrists, as well as bossing of the forehead.
RELATED TERMS--------------------------------------
Intestine
The tube involved in digestion and extending from the stomach to the anus. Consists of the small intestine and the large intestine.
Colon
Another name for the large intestine. The section of the large intestine extending from the cecum to the rectum. An adult colon is approximately five to six feet in length and is responsible for absorbing water and forming, storing and expelling waste.
Rectum
An 8-inch chamber connected to the large intestine that receives solid waste (feces) from the descending colon to be expelled from the body. The rectum connects the colon to the anus. It is the rectum's job to receive stool from the colon, to let the person know that there is stool to be evacuated, and to hold the stool until evacuation happens.
Anus
The opening at the end of the rectum of the alimentary canal through which feces are discharged. The anus has erotosexual potential in both sexes.
Stool
The solid wastes that pass through the rectum as bowel movements. Stools are undigested foods, bacteria, mucus, and dead cells. Also called feces.
SIMILAR TERMS--------------------------------------
Rectal manometry
A test that uses a thin tube and balloon to measure pressure and movements of the rectal and anal sphincter muscles. Usually used to diagnose chronic constipation and fecal incontinence.
Rectal prolapse
A condition in which the rectum slips so that it protrudes from the anus.
Rectal ultrsound
Rectal ultrsound refers to a system produces high-frequency sound waves to provide imaging and information about the staging of cancers of the rectum.
Rectocele
Condition in which weakening of the lower vaginal wall causes the rectum to bulge into the vagina.
PREVIOUS AND NEXT TERMS--------------------------------------
RNA
Ribonucleic acid. A long-chain, usually single-stranded. The primary function of RNA is protein synthesis within a cell. However, RNA is involved in various ways in the processes of expression and repression of hereditary information. The three main functionally distinct varieties of RNA molecules are: (1) messenger RNA (mRNA) which is involved in the transmission of DNA information, (2) ribosomal RNa (rRNA) which makes up the physical machinery of the synthetic process, and (3) transfer RNA (tRNA) which also constitutes another functional part of the machinery of protein synthesis.
Ribonucleic acid
RNA. The generic term for polynucleotides, similar to DNA but containing ribose in place of deoxyribose and uracil in place of thymine. These molecules are involved in the transfer of information from DNA, programming protein synthesis and maintaining ribosome structure. The 4 main types of RNA are heterogeneous nuclear RNA (hRNA), messenger RNA (mRNA), transfer RNA (tRNA) and ribosomal RNA (rRNA).
Receptor
A molecule that recognizes a unique hormone. Once that hormone is bound to the receptor, the information carried by the hormone can now exert its biological action.
Retina
A membrane lining the inside of the back of the eye that contains light-sensitive nerve cells that convert focused light into nerve impulses, making vision possible.
Recessive gene
A gene that is inferior to another gene that controls the same trait (the dominant gene). The inferior gene does not get expressed in the presence of a dominant gene.
Rectum
Rheumatism
A general disease characterized by painful, often multiple, local inflammations, usually affecting the joints and muscles, but also extending sometimes to the deeper organs, as the heart.
Retinitis Pigmentosa (RP)
A hereditary condition resulting in degeneration of the retina; causes a narrowing of the field of vision. The visual field loss often begins as a donut like ring in mid-periphery. As it progresses both centrally and peripherally, the resultant tunnel vision begins to affect the patient’s activities, driving and mobility.
Rheumatoid arthritis
Rheumatoid arthritis is a chronic disease that is of unknown cause and is characterized by pain, stiffness, inflammation, swelling and sometimes destruction of joints.
Rigidity
Rigidity is an increased resistance to the passive movement of a limb.
Rickets
A disorder of childhood characterised by defective bone and mineralisation, where characteristic lower limb bowing or bending occurs. Other outward signs of rickets can be the so-called rachitic rosary on the ribs, and thickened wrists, as well as bossing of the forehead.
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This dictionary contains 19186 terms.
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