blockade

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Related to blockades: military blockade, naval blockade

blockade

 [blok-ād´]
1. in pharmacology, the blocking of the effect of a neurotransmitter or hormone by a drug.
2. in histochemistry, a chemical reaction that modifies certain chemical groups and blocks a specific staining method.
adrenergic blockade selective inhibition of the response to sympathetic impulses transmitted by epinephrine or norepinephrine at alpha or beta receptor sites of an effector organ or postganglionic adrenergic neuron. See also adrenergic blocking agent.
cholinergic blockade selective inhibition of cholinergic nerve impulses at autonomic ganglionic synapses, postganglionic parasympathetic effectors, or neuromuscular junctions. See also cholinergic blocking agent.
ganglionic blockade inhibition by drugs of nerve impulse transmission at autonomic ganglionic synapses; see also ganglionic blocking agent.
narcotic blockade inhibition of the euphoric effects of narcotic drugs by the use of other drugs, such as methadone, in the treatment of addiction.
neuromuscular blockade a failure in neuromuscular transmission that can be induced pharmacologically or result from any of various disturbances at the myoneural junction. See also neuromuscular blocking agent.
sympathetic blockade block of nerve impulse transmission between a preganglionic sympathetic fiber and the ganglion cell.

block·ade

(blok-ād'),
1. The occupation of receptors by an antagonist so that usual agonists are relatively ineffective.
2. Receptor blockade, blocking the effect of a hormone at the cell surface.
3. Arrest of nerve impulse conduction or transmission at autonomic synaptic junctions, autonomic receptor sites, or neuromuscular junctions by various means, most often pharmacotherapy.
4. Intravenous injection of large amounts of colloidal dyes or other substances to block reticuloendothelial cells (for example, phagocytosis is temporarily prevented).

block·ade

(blok-ād')
1. Isolation of an organ, tissue, or system from communication with orinfluence by external forces or events.
2. Receptor blockade, blocking the effect of a hormone at the cell surface.
3. Arrest of peripheral nerve conduction or transmission at autonomic synaptic junctions, autonomic receptor sites, or myoneural junctions by a drug.
4. The occupation of receptors by an antagonist so that usual agonists are relatively ineffective.

blockade

The use of a drug to occupy, seal, or otherwise render inoperative, a receptor for natural hormones or neurotransmitters.

Patient discussion about blockade

Q. what does a sun block cream do? and what are a UV rays?

A. It blocks out harmful Ultra violet rays from the skin as the previous entries have related; however it can also block your ability to produce vitamin D. If you live in a northerly area or one that receives limited sunlight, its recommended to get at least 15 minutes of sun a day (this is probably best done with minimal sunblock) and according to personnal sun sensitivity. Another thing to keep in mind is that sunblock works best if applied 20 minutes before sun exposure.

Q. my son is 5 and half yrs old.he is having veezing and 75%block in one nose because of adenod.is is curable he has taken steriods for one and half yrs but with not much relief for veezing. then we switched on to ayur medicines,where he had some pigmentation at some places in his body. so again we are back to allopathy. he has one nasal steriod spray now with few other medicines. in his last test, dr, said he has adenod about 75% blcok in one nose, he has prescribed medicines for one month. he has also said that a small surgery can be done to remove adenod. i would like to know how long this surgry wil take and how much of rest he wil have to take. and if this adenod is removed, wil his other problem like veezing be cured? indira rajesh

A. it's a pretty common surgery from what i remember. most of our family has any kind of nasal problem...sinusitis..adenoids...just name it. the surgery is entering through the mouth (under full sedation) and lasering/curetting - removed. it took about a week to recover , eating soft foods..and it worked!

More discussions about blockade
References in periodicals archive ?
The conventional armed confrontation was quickly replaced by a popular strategy called blockade where, if a given aggrieved political entity has the necessary clout in the international community and is reasonably powerful over its adversary, it can bring the latter to its knees without firing a single bullet.
Blockade or forced isolation involves a diplomatic, military, and economic component.
At the same time, this blockade which is faraway from the legal justification of attacking military targets, amounts to a collective punishment of the blocked population of Gaza which is an infringement of the most fundamental obligations to guarantee freedom of movement to Gazans, ensure normal civilian life and public and social order, and uphold basic human rights, as provided in Fourth Geneva Convention 1949 and IHL.
69).Under the blockade, following measures were taken by Israel:
(b) the damage to the civilian population is, or may be expected to be, excessive in relation to the concrete and direct military advantage anticipated from the blockade.
Therefore, it is arguable whether the blockade on Yemen is still legitimate if it leads to a humanitarian crisis such as the one we are witnessing right now in Yemen.
Turkey was a loud critic of the IDF's alleged heavy-handedness and of the blockade generally.
It nonetheless concludes that the Israeli blockade was lawful as a matter of international law and that the Israeli enforcement operation was in the main similarly lawful.
Israel then called upon its small, but effective, navy to implement that blockade.
Israel formally imposed the blockade after Hamas seized power in Gaza, completely destroying Fatah's political organizations there.
States." (30) Blockades are a form of warfare and can only be
The report highlights the main Human Rights violations that are occurring as a consequence of the blockade, these are primarily: A violation on the freedom of movement, separation of families and violations on nationality and country of residence, a violation on the freedom of expression and association, a violation on the right to education, a violation on the right to health, and a violation of economic rights and the right to property.