EC space
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space
(spas) [L. spatium, space]1. An area, region, or segment.
2. A cavity of the body. Synonym: spatium
3. A period or length of time; duration.
alveolar dead space
The volume of gas in alveoli that are ventilated but not perfused, or ventilated but not fully perfused.
anatomical dead space
In pulmonary physiology, the area in the trachea, bronchi, and air passages containing air that does not reach the alveoli during inspiration and is not involved in gas exchange. This is termed dead space because the air does not reach the alveoli and is not involved in gas exchange. Normal anatomical dead space is 2.2 ml/kg or 1 ml/lb. Synonym: dead space (1)
See: physiological dead spacecircumlental space
The space between the equator of the lens and the ciliary body.
closest speaking space
The space between the teeth during casual repetition of the sound “s.” It is considered the closest relationship of the occlusal surfaces and incisal edges of the mandibular teeth to the maxillary teeth during function and rapid speech.
dead space
1. Anatomical dead space.
2. The unobliterated space remaining after closure of a surgical wound. This space favors the accumulation of blood and eventually infection.
epidural space
The space outside the dura mater of the brain and spinal cord.
extracellular space
Abbreviation: EC spaceThe space between cells. It contains tissue fluid, the water derived from plasma in the adjacent capillaries. The water flows among capillaries, tissue spaces, and cells.
See: extracellular fluidFontanaspaces
See: Fontana spacesintercostal space
The interval between ribs, filled by the intercostal muscles.
interfascial space
Tenon space. See: Tenon, Jacques R.interglobular spaces
Czermak spaces.interpleural space
Mediastinum.interproximal space
The space between the surfaces of adjacent teeth in the dental arch. It is divided into the septal space, gingival to the contact point of the teeth and occupied normally by the interdental papillae of the gingiva, and the embrasure, the space occlusal to the contact point of the teeth.
interradicular space
The area between the roots of a multirooted tooth, which contains an alveolar bony septum and the periodontal ligament.
intervillous space
Any area of the maternal side of the placenta where transfer of maternal oxygen, nutrients, and fetal wastes occurs.
joint space
Joint cavity.loose space
A distensible lung interstitial tissue surrounding the acinus and terminal bronchioles.
mechanical dead space
The volume of gas exhaled into a tubing system and rebreathed on the subsequent breath.
Meckel space
Cavum trigeminale.mediastinal space
Mediastinum.medullary space
The marrow-containing area of cancellous bone.
palmar space
The midpalmar and thenar spaces of the hand.
parasinoidal spaces
Lateral spaces in the dura mater adjacent to the superior sagittal sinus that receive meningeal and diploic veins.
perforated space
The space pierced by blood vessels at the base of the brain.
periodontal ligament space
Abbreviation: PDL spaceA radiolucent space that appears on a dental radiograph between the tooth and the adjacent lamina dura. The space is occupied by the periodontal ligament, which lacks the density to be radiopaque.
periportal space of Mall
See: periportal space of Mallperivascular spaces
The spaces within adventitia of larger blood vessels of the brain. They communicate with the subarachnoid space.
personal space
In psychiatry, an individual's personal area and the surrounding space. This space is important in interpersonal relations and in personal feelings of security and privacy.
physiological dead space
In the respiratory tract, any nonfunctional alveoli that do not receive air that participates in gas exchange. Possible causes include emphysema, pneumothorax, pneumonia, pulmonary edema, and constriction of bronchioles.
See: anatomical dead spaceplantar space
One of four spaces between the fascial layers of the foot. When the foot is infected, pus may be found there.
pleural space
The potential space between the visceral and parietal pleura. In some diseases and conditions the space fills with air, blood, lymph, or malignant tumors. Air in the pleural space is called pneumothorax. Blood in the space is called hemothorax. Lymph accumulations in the pleural space are called chylothorax. Malignant tumors that may fill the pleural space include mesothelioma or metastatic lung or breast cancers, among others.
pneumatic space
Any of the spaces in bone that contain air, esp. those in the paranasal sinuses.
popliteal space
The space behind the knee joint, containing the popliteal artery and vein and small sciatic and popliteal nerves.
potential space
A region of the body in which two surface membranes adjoin, separated in health only by a small amount of fluid lubrication. Examples of potential spaces include joint bursae and synovium, and the pericardial, peritoneal, and pleural cavities. These spaces may fill with bacteria, crystals, extracellular fluid, or inflammatory or malignant cells in disease.
prezonular space
The anterior portion of the posterior chamber of the eye.
Prussak space
See: Prussak, Alexanderretroperitoneal space
The potential space outside the parietal peritoneum of the abdominal cavity.
retropharyngeal space
The space behind the pharynx separating prevertebral from visceral fascia. Important as a possible path for the spread of infection from oral cavity trauma downward to visceral organs of the mediastinum.
space of Retzius
See: Retzius, Anders Adolfsubarachnoid space
The space between the pia mater and the arachnoid, containing the cerebrospinal fluid.
subdural space
Narrow space between the dura and the arachnoid.
subphrenic space
Space between the diaphragm and the abdominal organs.
subumbilical space
The triangular space within the body cavity below the navel.
suprasternal space
Triangular space immediately above the sternum between layers of deep cervical fascia.
Tenon space
See: Tenon, Jacques R.thenar space
A deep fascial space in the hand lying anterior to the adductor pollicis muscle.
tissue space
Any space within tissues not lined with epithelium and containing tissue fluid.
zonular space
A space within the zonule (suspensory ligament of lens).
See: dead spaceextracellular space
Abbreviation: EC spaceThe space between cells. It contains tissue fluid, the water derived from plasma in the adjacent capillaries. The water flows among capillaries, tissue spaces, and cells.
See: extracellular fluidSee also: space