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| This glossary contains: 19186 medical terms |
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Dorsum
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DorsumThe back or posterior side of a structure. "Dorsum" is the Latin word for the back. Something pertaining to the dorsum is dorsal. The dorsal surface of the hand is the back of the hand, the side opposite the palm. The dorsal surface of the foot is the back of the foot, the side opposite the sole. The dorsal vertebrae are the thoracic vertebrae; they form part of the back. The dorsal roots of the spinal nerves are the back roots, the posterior roots.
RELATED TERMS--------------------------------------
Posterior
At or toward the back.
Dorsum
The back or posterior side of a structure. "Dorsum" is the Latin word for the back. Something pertaining to the dorsum is dorsal. The dorsal surface of the hand is the back of the hand, the side opposite the palm. The dorsal surface of the foot is the back of the foot, the side opposite the sole. The dorsal vertebrae are the thoracic vertebrae; they form part of the back. The dorsal roots of the spinal nerves are the back roots, the posterior roots.
Dorsal
Toward the back.
Foot
The distal portion of the leg, upon which an individual stands and walks. It consists, in man, of the tarsus, metatarsus, and phalanges and the tissues encompassing them.
Vertebrae
The bones that make up the spine.
Thoracic
Pertaining to or affecting the chest.
SIMILAR TERMS--------------------------------------
Dorsal
Toward the back.
Dorsal pathway
One of two theorized systems of visual information processing. Information thought to progress toward the parietal cortex V1-> V2 -> MT -> MST -> STP. Functions in comprehension of spatial arrangement.
PREVIOUS AND NEXT TERMS--------------------------------------
Donor lymphocyte infusion
(DLI) A cancer treatment in which lymphocytes from a bone marrow donor are infused into the person who received the original bone marrow transplant. The goal of donor lymphocyte infusion is to induce a remission of the cancer by a process called the graft-versus-tumor (GVT) effect. Donor lymphocyte infusion is basically meant to boost the GVT effect. The donor lymphocytes, which are T cells, attack and kill residual cancer cells. That is the strategy. Donor lymphocyte infusion has mainly been used to treat relapsed chronic myelogenous leukemia (CML). Patients with relapsed acute leukemia, chronic lymphocytic leukemia (CLL), myelodysplasia (MDS), Hodgkin disease, non-Hodgkin lymphoma (NHL), and multiple myeloma have also been treated by donor leukocyte infusion.
Donor, universal
A person who is type O in the ABO blood group system and can donate blood to all recipients.
Dopa
A precursor (forerunner) of dopamine, a key neurotransmitter (messenger) in the brain. Dopa is used in the treatment of Parkinson disease. Parkinson disease is believed to be related to low levels of dopamine in certain parts of the brain. When dopa is taken by mouth, it crosses through the blood-brain barrier. Once it has crossed from the bloodstream into the brain, it is converted to dopamine. The resulting increase in dopamine concentrations in the brain is thought to improve nerve conduction and to assist in lessening the movement disorders in Parkinson disease.
Dopa-responsive dystonia (DRD)
A condition that typically begins in childhood or adolescence with progressive difficulty in walking and, in some cases, spasticity and can be successfully treated with drugs. Segawa dystonia is an important variant of DRD. In Segawa dystonia, the symptoms fluctuate during the day from relative mobility in the morning to increasing disability in the afternoon and evening and after exercise. DRD may not only be rare but also rarely diagnosed since it mimics some forms of cerebral palsy.
Dorian Gray effect
Sudden aging, an abrupt change from seeming youthfulness to the reality and ravages of age, as can occur naturally or when the effects of plastic surgery and Botox treatments wear off.
Dorsum
Dose, absorbed
In radiology, the absorbed dose is the amount of energy that is deposited in any material by ionizing radiation. The unit of absorbed dose, the rad, is a measure of energy absorbed per gram of material. An alternative unit of absorbed dose is the gray. One gray equals 100 rads.
Double contrast barium enema
A series of x-rays of the colon and rectum taken after the patient is given an enema, followed by an injection of air. The barium outlines the intestines on the x-rays, allowing many abnormal growths to be visible
Double helix
The structure of DNA with the two strands of DNA spiraling about one other. The double helix looks something like an immensely long ladder twisted into a helix, or coil. The sides of the "ladder" are formed by a backbone of sugar and phosphate molecules, and the "rungs" consist of nucleotide bases joined weakly in the middle by hydrogen bonds.
Double pneumonia
Inflammation of both lungs. Medically called bilateral pneumonia.
Double-blind
Term used to described a study in which both the investigator or the participant are blind to (unaware of) the nature of the treatment the participant is receiving. Double-blind trials are thought to produce objective results, since the expectations of the researcher and the participant about the experimental treatment such as a drug do not affect the outcome. Also called double-masked.
RELATED TERMS--------------------------------------
Posterior
At or toward the back.
Dorsum
The back or posterior side of a structure. "Dorsum" is the Latin word for the back. Something pertaining to the dorsum is dorsal. The dorsal surface of the hand is the back of the hand, the side opposite the palm. The dorsal surface of the foot is the back of the foot, the side opposite the sole. The dorsal vertebrae are the thoracic vertebrae; they form part of the back. The dorsal roots of the spinal nerves are the back roots, the posterior roots.
Dorsal
Toward the back.
Foot
The distal portion of the leg, upon which an individual stands and walks. It consists, in man, of the tarsus, metatarsus, and phalanges and the tissues encompassing them.
Vertebrae
The bones that make up the spine.
Thoracic
Pertaining to or affecting the chest.
SIMILAR TERMS--------------------------------------
Dorsal
Toward the back.
Dorsal pathway
One of two theorized systems of visual information processing. Information thought to progress toward the parietal cortex V1-> V2 -> MT -> MST -> STP. Functions in comprehension of spatial arrangement.
PREVIOUS AND NEXT TERMS--------------------------------------
Donor lymphocyte infusion
(DLI) A cancer treatment in which lymphocytes from a bone marrow donor are infused into the person who received the original bone marrow transplant. The goal of donor lymphocyte infusion is to induce a remission of the cancer by a process called the graft-versus-tumor (GVT) effect. Donor lymphocyte infusion is basically meant to boost the GVT effect. The donor lymphocytes, which are T cells, attack and kill residual cancer cells. That is the strategy. Donor lymphocyte infusion has mainly been used to treat relapsed chronic myelogenous leukemia (CML). Patients with relapsed acute leukemia, chronic lymphocytic leukemia (CLL), myelodysplasia (MDS), Hodgkin disease, non-Hodgkin lymphoma (NHL), and multiple myeloma have also been treated by donor leukocyte infusion.
Donor, universal
A person who is type O in the ABO blood group system and can donate blood to all recipients.
Dopa
A precursor (forerunner) of dopamine, a key neurotransmitter (messenger) in the brain. Dopa is used in the treatment of Parkinson disease. Parkinson disease is believed to be related to low levels of dopamine in certain parts of the brain. When dopa is taken by mouth, it crosses through the blood-brain barrier. Once it has crossed from the bloodstream into the brain, it is converted to dopamine. The resulting increase in dopamine concentrations in the brain is thought to improve nerve conduction and to assist in lessening the movement disorders in Parkinson disease.
Dopa-responsive dystonia (DRD)
A condition that typically begins in childhood or adolescence with progressive difficulty in walking and, in some cases, spasticity and can be successfully treated with drugs. Segawa dystonia is an important variant of DRD. In Segawa dystonia, the symptoms fluctuate during the day from relative mobility in the morning to increasing disability in the afternoon and evening and after exercise. DRD may not only be rare but also rarely diagnosed since it mimics some forms of cerebral palsy.
Dorian Gray effect
Sudden aging, an abrupt change from seeming youthfulness to the reality and ravages of age, as can occur naturally or when the effects of plastic surgery and Botox treatments wear off.
Dorsum
Dose, absorbed
In radiology, the absorbed dose is the amount of energy that is deposited in any material by ionizing radiation. The unit of absorbed dose, the rad, is a measure of energy absorbed per gram of material. An alternative unit of absorbed dose is the gray. One gray equals 100 rads.
Double contrast barium enema
A series of x-rays of the colon and rectum taken after the patient is given an enema, followed by an injection of air. The barium outlines the intestines on the x-rays, allowing many abnormal growths to be visible
Double helix
The structure of DNA with the two strands of DNA spiraling about one other. The double helix looks something like an immensely long ladder twisted into a helix, or coil. The sides of the "ladder" are formed by a backbone of sugar and phosphate molecules, and the "rungs" consist of nucleotide bases joined weakly in the middle by hydrogen bonds.
Double pneumonia
Inflammation of both lungs. Medically called bilateral pneumonia.
Double-blind
Term used to described a study in which both the investigator or the participant are blind to (unaware of) the nature of the treatment the participant is receiving. Double-blind trials are thought to produce objective results, since the expectations of the researcher and the participant about the experimental treatment such as a drug do not affect the outcome. Also called double-masked.
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This dictionary contains 19186 terms.
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