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The medullary sinuses converge at the hilum and lymph then leaves the lymph node via the efferent lymphatic vessel towards either a more central lymph node or ultimately for drainage into a central venous subclavian blood vessel, most via the postcapillary venules, and cross its wall by the process of diapedesis.
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medullary and sinuses
The cortical sinuses and that flanking the trabeculae drain into the medullary sinuses, from where the lymph flows into the efferent lymph vessel.
In the cortex, the subcapsular sinus drains to trabecular sinuses, and then the lymph flows into the medullary sinuses.
* The medullary sinuses ( or sinusoids ) are vessel-like spaces separating the medullary cords.
The Lymph flows into the medullary sinuses from cortical sinuses, and into efferent lymphatic vessels.
The Medulla contains large blood vessels, sinuses and medullary cords that contain plasma cells secreting antibody.
The subcapsular sinus drains into trabecular sinuses and finally into medullary sinuses.
medullary and at
This medullary sheath is interrupted at intervals by the nodes of Ranvier.
It may also be preferable in certain rare conditions, such as Ondine's curse, in which failure of the medullary respiratory centers at the base of the brain result in patients having no autonomic control of breathing.
At the point where the pia mater reaches the conus medullaris or medullary cone at the end of the spinal cord, the membrane extends as a thin filament called the filum terminale or terminal filum, contained within the lumbar cistern.
They unite at short intervals with one another, the resulting tubes presenting a considerable increase in caliber, so that a series of comparatively large tubes passes from the bases of the medullary rays into the renal pyramids.
In the case of a ' non-union ', a fracture that does not heal, this is often evidenced by the obliteration of the medullary cavity of a long bone at the site of the non union.
Association with the cardiovascular system is seen when the brain tumors reach the medullary cardiovascular centers, at which point the patient usually succumbs to death.
The neuronal pathway for midshipman vocalization starts at the ventral medullary nucleus and continues to a hindbrain vocal pattern generator, which contains both pre-pacemaker and pacemaker nuclei.
Contrast this with Medial medullary syndrome when the anterior spinal artery is occluded at the level of the medulla.
medullary and then
Upon leaving the medulla between the medullary pyramid and the inferior cerebellar peduncle, it extends through the jugular foramen, then passing into the carotid sheath between the internal carotid artery and the internal jugular vein down below the head, to the neck, chest and abdomen, where it contributes to the innervation of the viscera.
Directly rostral to the superior cerebellar peduncle, there is the superior medullary velum and then the two trochlear nerves.
medullary and leaves
Urine leaves the medullary collecting ducts through the renal papillae, emptying into the renal calyces, the renal pelvis, and finally into the urinary bladder via the ureter.
medullary and via
In the medullary collecting duct, the cGMP generated in response to ANP may act not only through PKG but also via direct modulation of ion channels.
These nerve fibers usually originate in the primary motor cortex, pass via the corona radiata to gather in the internal capsule before crossing over to the opposite side ( decussation ) in the medullary pyramids and proceeding down the spinal cord to meet lower motor neurons in the anterior horn.
medullary and efferent
The fastigial nucleus is the most medial efferent cerebellar nucleus, targeting the pontine and medullary reticular formation as well as the vestibular nuclei.
medullary and lymphatic
* The medullary cords are cords of lymphatic tissue, and include plasma cells, macrophages, and B cells
medullary and vessel
The vessel elements are relatively small and usually 2-4-seriate ; the medullary rays are fine and close together.
medullary and either
Lateral medullary syndrome can be caused by occlusion of either the PICA or the vertebral arteries.
Other brainstem sites, such as the parabrachial nucleus, the dorsal raphe, locus coeruleus, and the medullary reticular formation also mediate pain relief and use many different neurotransmitters to either facilitate or inhibit activity of the neurons in the dorsal horn.
medullary and central
In fact, these adrenal medullary cells are modified postganglionic neurons, and preganglionic autonomic nerve fibers lead to them directly from the central nervous system. Adrenal medulla increases available energy ; heart rate ; and metabolism.
* Central chemoreceptors of the central nervous system, located on the ventrolateral medullary surface, are sensitive to the pH of their environment .< ref name =" Cordovez "> Cordovez JM, Clausen C, Moore LC, Solomon, IC.
The medullary cavity ( medulla, innermost part ) is the central cavity of bone shafts where red bone marrow and / or yellow bone marrow ( adipose tissue ) is stored ; hence, the medullary cavity is also known as the marrow cavity.
A number of conditions that involve the central nervous system may lead to vertigo including: lesions caused by infarctions or hemorrhage, tumor, epilepsy, cervical spine disorders, degeneration, migraine headaches, lateral medullary syndrome, multiple sclerosis, parkinsonism, as well as cerebral dysfunction.
medullary and ultimately
These patients experience prolonged series of CNH before succumbing to the associated deterioration of medullary cardiovascular center, which ultimately results in death.
medullary and for
A decrease in volume or pressure is a nonosmotic stimulus for antidiuretic hormone production in the hypothalamus, which exerts its effect in the medullary collecting duct for water reabsorption.
* Another name for medial medullary syndrome
He believed that sensation is the result of a vibration of the minute particles of the medullary substance of the nerves, to account for which he postulated, with Newton, a subtle elastic ether, rare in the interstices of solid bodies and in their close neighbourhood, and denser as it recedes from them.
Common mutations in the RET oncogene may also account for medullary sponge kidney as well.
In 1885 Wilhelm Roux removed a section of the medullary plate of an embryonic chicken and maintained it in a warm saline solution for several days, establishing the basic principle of tissue culture.
It may be used diagnostically as a tumor marker for medullary thyroid cancer, in which high calcitonin levels may be present and elevated levels after surgery may indicate recurrence.
Cutoffs for calcitonin to distinguish cases with medullary thyroid cancer have been suggested to be as follows, with a higher value increasing the suspicion of medullary thyroid cancer:
The descending tract for autonomic inspiration is located laterally, and the tract for autonomic expiration is located ventrally .” Autonomic Inspiration is controlled by the pontine respiratory center and both medullary respiratory centers.
These capillaries ( called the vasa recta ; recta is from the Latin for " straight ") also have a countercurrent multiplier mechanism that prevents washout of solutes from the medulla, thereby maintaining the medullary concentration.
As a specific marker for these tissues, it can be used to identify tumours arising from them, such as neuroblastoma, phaeochromocytoma, carcinoid, and medullary thyroid carcinoma, among others.
Prognosis for someone with lateral medullary syndrome depends upon the size and location of damaged area of the brain stem.
In 1885, Wilhelm Roux removed a portion of the medullary plate of an embryonic chicken and maintained it in a warm saline solution for several days, establishing the principle of tissue culture.
This technique is known as two-dimensional ( 2D ) cell culture, and was first developed by Wilhelm Roux who, in 1885, removed a portion of the medullary plate of an embryonic chicken and maintained it in warm saline for several days on a flat glass plate.
Its lead compound, XL184, is currently in a number of clinical trials for prostate, ovarian, brain, melanoma, breast, non-small cell lung, hepatocellular, kidney, and medullary thyroid cancer.
A secondary postulated mechanism by which CNH may function is that the lesions produce lactate which consequently serves as a stimulator for the chemoreceptors of the medullary region of the brainstem.
In 1885 Roux removed a portion of the medullary plate of an embryonic chicken and maintained it in a warm saline solution for several days, establishing the principle of tissue culture which would later be taken up by Ross Granville Harrison and Paul Alfred Weiss.
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