In any case our knowledge of the nature and origin of nervous plexuses is far too imperfect to found upon their character such conclusions as those of Davidoff.
The vascular elements of the two plexuses form however a continuous structure.
In the higher animals, owing to the development of the cerebrum and cerebellum, this membranous roof becomes pushed into the larger brain cavity, and thus forms the choroid plexuses of the third and lateral ventricles.
Yet, according to the old embryology both in the case of the eye and the brain, the pigment-layer and the so-called choroidplexuses are a part of the tubular nervous system.
These three outflows are separated by two gaps just where the plexuses for the anterior and posterior extremities come in.
These possess neither brain nor spinal cord; their nerve-centres, instead of being concentrated in a cranium and vertebral canal, are entirely disseminated through the cavities of the trunk, as are the visceral plexuses in vertebrated animals.
Cortex of human brain illustrating complexity of the systems andplexuses of nerve fibers 109 3.
The plexuses of the two sides anastomose freely across the median line, and through them passes the entire blood supply of the brain; in the animals which possess them these plexuses seem the terminal branches of the vertebral arteries also.
The ganglia and the plexuses stand in mutual opposition, like the branchiæ and intestine, like artery and vein, like blood and lymphatic vessels.
The plexuses suffer, digest, and are the recipient.
These ramify and form plexuses that accord with the visceral organs, which they govern.
It will be noticed above that six plexuses are mentioned other than the Sacral and the prostatic.
These nerves are found in plexuses in all parts of the body; they are abundant in the skin, fascia, muscle, lymphatics and all organs great and small.
The choroid plexuses contain the small choroidal arteries; and the blood from these is returned by small veins, which join to form the veins of Galen.
Its apex, where the two choroid plexuses blend with each other, lies just behind the anterior pillars of the fornix.
These tumours are rare, and are chiefly met with in the main cords or abdominal plexuses of the sympathetic system of children or young adults.
Under the influence of such stimuli, the venus plexuses making up the vaginal bulbs also become distended with blood.
Müller, it is believed to form part of the sympathetic plexuses of the pelvis.
There are the obvious physiological changes resulting from the gradual bursting into free activity of the hypogastric plexus and the sacral ganglion, in the lower body, and of the cervical plexuses and ganglia of the neck, in the upper body.
In the region of the throat and neck, the so-called cervicalplexuses and the cervical ganglia dawn into activity.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "plexuses" in a variety of sentences. We hope that you will now be able to make sentences using this word.
