Plexus Sentence Examples
Nephridia always paired and without plexus of blood capillaries.
In the polyp the nervous tissue is always in the form of a scattered plexus, never concentrated to form a definite nervous system as in the medusa.
The nervous system of the medusa consists of sub-epithelial ganglion-cells, which form, in the first place, a diffuse plexus of nervous tissue, as in the polyp, but developed chiefly on the subumbral surface; and which are concentrated, in the second place, to form a definite central nervous system, never found in the polyp. In Hydromedusae the central nervous system forms two concentric nerverings at the margin of the umbrella, near the base of the velum.
In the case of many Oligochaeta where there is no vascular network surrounding the nephridium, this function must be the chief one of those glands, the more elaborate process of excretion taking place in the case of nephridia surrounded by a rich plexus of blood capillaries.
A definite plexus can here no longer be traced.Advertisement
There are only two or three vertebrae which are equivalent to those of the reptiles; these true sacrals are situated in a level just behind the acetabulum; as a rule between these two primary sacral vertebrae issues the last of the spinal nerves which contributes to the composition of the sciadic plexus.
The Crural Plexus is divided into a crural, ischiadic and pubic portion.
The last nerve which contributes to the ischiadic plexus leaves the spinal column in most birds either between the two primary sacral vertebrae, or just below the hindmost of them, and sends a branch to the pubic portion which is composed of post-ischiadic nerves, partly imbedded in the kidneys, and innervates the ventral muscles between the tail and pubis, together with those of the cloaca and copulatory organs.
In the pelvic region, from about the level of the posterior end of the ischiadic plexus, the strand of each side becomes single again, passing ventrally over the transverse processes.
In Carinella, where the longitudinal nerve-stems are situated exteriorly to the muscular layers, this plexus, although present, is much less dense, and can more fitly be compared to a network with wide meshes.Advertisement
It stretches forward as far as the brain, and in Carinella is again continued in front of it, whereas in the Heteronemertines the innervation of the anterior extremity of the head, in front of the brain, takes the form of more definite and less numerous branching stems. The presence of this plexus in connexion with the central stems, sending out nervous filaments amongst the muscles, explains the absence, in Pro-, Mesoand Heteronemertines, of separate and distinct peripheral nerve stems springing from the central stems innervating the different organs and body-regions, the only exceptions being the L.N.
The plexus of nerve-fibrils which underlie the ectoderm and are in places gathered up into nerves, and the great development of connective tissue, are worthy of notice.
From these tracts a plexus of nerve-fibres is developed in connexion with the musculature and cuticle.
It is enclosed in a fibrous capsule from which it is separated by the prostatic plexus of veins anteriorly.
As in other animals there is a minute but extensive nervous plexus, which permeates the whole body and takes its origin from the chief ganglia.Advertisement
The nervous system consists as in Hydromedusae of a diffuse plexus beneath the ectoderm, concentrated in certain places to form a central nervous system.
Between the mucous membrane and the bone of the hard palate is a dense vascular and nervous plexus.
The initial phase III studies involved patients with Multiple Sclerosis, neuropathic pain, brachial plexus avulsion and cancer pain.
The solar plexus chakra is at the point where the rear of the saddle would go.
Parts of the body controlled by the lumbar plexus include the reproductive system and the abdomen, and the lumbar region of the back.Advertisement
The CSF is made in a part of the brain called the choroid plexus.
The pulmonary vessels form the rich plexus of capillaries around the alveoli.
Question 17 A. false B. false C. true D. true E. true There are 3 common approaches to blocking the brachial plexus.
This causes tension on the brachial plexus which may stretch or rupture the nerves.
An ideal prokinetic drug should either enhance the contraction of a damaged muscle or normalize the coordination of a damaged myenteric plexus.Advertisement
Transient paraesthesia, numbness and anesthesia of the leg can occur due to spread of anesthetic solution to the sacral plexus 27.
Her left arm is held over solar plexus to show the seat of the life energy.
All three nerves are derived from the lumbar plexus.
The same may be said in regard to the development of the axon plexus of the hippocampus.
Air work with the breath to increase respiration and mobilize the shoulder girdle with brachial plexus work and trapezius release.
The brachial plexus is formed by four or five of the lowest cervical nerves; the last nerve of this plexus often marks the boundary of the cervical and thoracic vertebrae.
There is great probability that the central stems, together with the brain, must be looked upon as local longitudinal accumulations of ner vous tissue in what was in more primitive ancestors a less highly differentiated nervous plexus, situated in the body-wall in a similar way to that which still is found in the less highly o rga n ized C oelenterates.
These nerves are derived from the coeliac plexus and the thoracic splanchnic nerves.
Injury to the brachial plexus is referred to by various names.
Some names, such as obstetric Erb's palsy, refer to the specific region of the brachial plexus where the injury has occurred.
The nerves of the brachial plexus are the fifth through the eighth cervical nerves (C5, C6, C7, and C8) and the first thoracic nerve (T1).
Every brachial plexus injury is different, depending on the affected nerve or nerves and the extent and severity of the injury.
Most brachial plexus injuries in newborns are of this type.
An avulsion is the most severe form of brachial plexus injury.
A minor brachial plexus injury can be a stretched nerve that results in a short-circuit in a few of the nerve fibers, causing temporary paralysis.
Most injuries to the brachial plexus during birth involve the C5 and C6 nerve roots, affecting the movement of the shoulder, upper arm, and elbow.
Obstetric Erb's palsy is an injury in the upper brachial plexus involving C5 and C6 and sometimes C7.
Also called Erb/Klumpke palsy, total plexus palsy involves all of the nerve roots of the brachial plexus to at least some extent.
An infant's shoulder becomes stuck on the mother's pelvic bone during birth; the infant's neck may be stretched and the brachial plexus injured as the physician pulls on the baby to free it before circulatory or respiratory stress occurs.
Although brachial plexus injuries can occur during any birth, there are particular risk factors.
The highest rates of brachial plexus injury (7.8%) occur in newborns weighing over 10 lb (4.5 kg) who are born by assisted vaginal delivery to diabetic mothers.
Some 50-70 percent of brachial plexus injuries occur in larger-than-average newborns, usually those over 7.7 lb (3.5 kg).
Breech deliveries increase the risk of brachial plexopathy by 175-fold, often causing bilateral injuries to the lower nerve roots of the brachial plexus.
Therefore, stretch or praxis injuries to the brachial plexus usually heal on their own within about three months, leading to complete recovery.
About ten percent of brachial plexus injuries in infants require surgery.
In another study of 28 infants with damage to the upper brachial plexus and 38 infants with total plexus palsy, 92 percent recovered spontaneously.
Erb's palsy or paralysis-A condition caused by an injury to the upper brachial plexus, involving the cervical nerves C5, C6, and sometimes C7, affecting the upper arm and the rotation of the lower arm.
Klumpke's palsy or paralysis-A condition caused by an injury to the lower brachial plexus, involving the cervical nerves C7 and C8, and sometimes the thoracic nerve T1, causing weakness or paralysis in the hands and fingers.
Total plexus palsy-Erb/Klumpke palsy; a condition resulting from injury involving all of the brachial plexus nerves and affecting the entire upper extremity of the body.
Karaca, P., et al. "Painful paresthesiae are infrequent during brachial plexus localization using low-current peripheral nerve stimulation."
If the delay occurs mainly in one developmental area, the child may have hemiplegia, a brachial plexus injury, such as Erb's or Klumple's palsy, or a broken clavicle.
A mass of blood vessels, called Kiesselbach's plexus, lie on either side of the septum.