subarachnoid space


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Related to subarachnoid space: Subarachnoid hemorrhage

space

 [spās]
1. a delimited area.
2. an actual or potential cavity of the body.
3. the areas of the universe beyond the earth and its atmosphere. adj., adj spa´tial.
danger space a subdivision of the retropharyngeal space, extending from the base of the skull to the level of the diaphragm; so called because it provides a route by which infection of the pharynx can spread to the mediastinum.
dead space see dead space.
epidural space the space between the dura mater and the lining of the spinal canal.
intercostal space the space between two adjacent ribs.
interpleural space mediastinum.
interproximal space (interproximate space) the space between the proximal surfaces of adjoining teeth; called also proximal or proximate space.
intervillous space the space of the placenta into which the chorionic villi project and through which the maternal blood circulates.
lymph s's open spaces filled with lymph in connective or other tissue, especially in the brain and meninges.
Meckel's space a recess in the dura mater that lodges the trigeminal ganglion.
mediastinal space mediastinum.
medullary space the central cavity and the intervals between the trabeculae of bone that contain the marrow.
palmar space a large fascial space in the hand, divided by a fibrous septum into a midpalmar and a thenar space.
parasinoidal s's spaces in the dura mater along the superior sagittal sinus which receive the venous blood.
perivascular space a lymph space within the walls of an artery.
plantar space a fascial space on the sole of the foot, divided by septa into the lateral, middle, and median plantar spaces.
pneumatic space a portion of bone occupied by air-containing cells, especially the spaces constituting the paranasal sinuses.
proximal space (proximate space) interproximal space.
retroperitoneal space the space between the peritoneum and the posterior abdominal wall.
retropharyngeal space the space behind the pharynx, containing areolar tissue.
subarachnoid space the space between the arachnoid and the pia mater, containing cerebrospinal fluid.
subdural space a narrow fluid-containing space, often only a potential space, between the dura mater and the arachnoid.
subphrenic space the space between the diaphragm and underlying organs.
subumbilical space somewhat triangular space in the body cavity beneath the umbilicus.
Tenon's space a lymph space between the sclera and Tenon's capsule.

sub·a·rach·noid space

[TA]
the space between the arachnoidea and pia mater, traversed by delicate fibrous trabeculae and filled with cerebrospinal fluid. Because the pia mater immediately adheres to the surface of the brain and spinal cord, the space is greatly widened wherever the brain surface exhibits a deep depression (for example, between the cerebellum and medulla); such widenings are called cisternae. The large blood vessels supplying the brain and spinal cord lie in the subarachnoid space.

subarachnoid space

n.
The space between the arachnoid membrane and pia mater that is filled with cerebrospinal fluid and contains the large blood vessels that supply the brain and spinal cord.

subarachnoid space

the space between the arachnoid membranes and pia mater membranes. It contains cerebrospinal fluid.
enlarge picture
Location of subarachnoid space in relation to receiving a spinal block

sub·a·rach·noid space

(sŭb'ă-rak'noyd spās) [TA]
The area between the arachnoidea and pia mater, traversed by delicate, fibrous trabeculae and filled with cerebrospinal fluid. Because the pia mater immediately adheres to the surface of the brain and spinal cord, the space is greatly widened wherever the brain surface exhibits a deep depression (for example, between the cerebellum and medulla); such widenings are called cisterns. The large blood vessels supplying the brain and spinal cord lie in the subarachnoid space.

subarachnoid space

The space between the PIA MATER and the arachnoid mater, occasioned by the fact that the pia, the innermost layer of the meninges, closely invests the surface of the brain while the arachnoid, external to it, bridges over the grooves. The subarachnoid space contains blood vessels.

Subarachnoid space

The space between two membranes surrounding the brain, the arachnoid and pia mater.

space

1. a delimited area.
2. an actual or potential cavity of the body.
3. the areas of the universe beyond the earth and its atmosphere.

dead space
1. space remaining in tissues as a result of failure of proper closure of surgical or other wounds, permitting accumulation of blood or serum.
2. the portions of the respiratory tract (passages and space in the alveoli) occupied by gas not concurrently participating in oxygen-carbon dioxide exchange.
Enlarge picture
Types of dead-space in an anesthetic ventilation system. By permission from Cunningham JG, Textbook of Veterinary Physiology, Saunders, 2002
Disse s's
small spaces between liver sinusoids and liver cells; conduits for liver lymph. Called also perisinusoidal space.
epidural space
the space between the dura mater and the lining of the spinal canal.
s's of Fontana
fluid spaces separating solid trabeculae in the iridial angle meshwork.
interalveolar space
the part of the dental arch where there are no teeth.
intercostal space
the space between two adjacent ribs.
interpleural space
mediastinum.
intervillous space
the space of the human and some other placentae into which the chorionic villi project and through which the maternal blood circulates.
lumbosacral space
the intervertebral space between the last lumbar and the first sacral vertebrae; suitable site for epidural injection.
lymph s's
open spaces filled with lymph in connective or other tissue, especially in the brain and meninges.
Meckel's space
a recess in the dura mater that lodges the trigeminal ganglion.
mediastinal space
mediastinum.
medullary space
the central cavity and the intervals between the trabeculae of bone that contain the marrow.
parasinoidal s's
spaces in the dura mater along the superior sagittal sinus which receive the venous blood.
perisinusoidal space
see Disse spaces (above).
perivascular space
a lymph space within the walls of an artery.
plantar space
a fascial space on the sole of the foot of primates, divided by septa into the lateral, middle and median plantar spaces.
pneumatic space
a portion of bone occupied by air-containing cells, especially the spaces constituting the paranasal sinuses.
retroperitoneal space
the space between the peritoneum and the dorsal abdominal wall.
retropharyngeal space
the space behind the pharynx, containing areolar tissue.
subarachnoid space
the space between the arachnoid and the pia mater, containing cerebrospinal fluid.
subdural space
the space between the dura mater and the arachnoid.
subphrenic space
the space between the diaphragm and subjacent organs of bipeds.
subumbilical space
somewhat triangular space in the body cavity cranial to the umbilicus.
Tenon's space
a lymph space between the sclera and Tenon's capsule.
References in periodicals archive ?
Lateral and anterior meningoceles commonly occur in patients with NF1 due to pressure differences between the thorax and subarachnoid space superimposed on bone vertebral defects.
The subarachnoid spaces of the cerebral convexity are the preferred site for C.
Researchers also noted inflammation was present in the meninges, the protective membranes that cover the surface of the brain and demarcate the subarachnoid space.
It has also been suggested that discarding a few drops of cerebrospinal fluid (CSF) from the spinal needle before injecting the local anaesthetic into the subarachnoid space may help in clearing the needle of tissue cores (1).
15) However, this hypothesis neglects the fact that the subarachnoid space and cystic fluid have been demonstrated to be osmotically similar.
Typically, they extend over a long segment of the spinal canal, obliterating the subarachnoid space around the cord.
The subarachnoid space was identified and confirmed by return of clear CSF freely to the hub of the spinal needle and a positive aspiration of CSF with a syringe.
Intrathecal therapy involves placing a small catheter into the subarachnoid space for direct delivery of analgesic substances to the cerebrospinal fluid.
Evidence of blood in the subarachnoid space on computed tomography (CT) scan can often predict the occurrence of vasospasm.
In either case, the needle tip needs to be maintained in the proper position and the larger the possible free movement of the needle tip within the subarachnoid space, the less likely is it that malplacement will occur.
Closer examination of the CT revealed a large infracochlear connection between the left middle ear cavity and the intracranial subarachnoid space.
Smaller cysts in the subarachnoid space have been shown to respond to antihelminthic therapy (12) and even dramatic remission has been described for giant (>50 mm) cysts.