A. transient shortage of oxygen (global ischemia) releases excess glutamate into the extracellular fluid of the brain. this causes neuronal death by hyperexcitation to a greater extent in the hippocampus than in the cortex. which reason best explains why the hippocampus is selectively vulnerable during gloabl ischemia?
a. the mag of ap is greater in hippocampal than cortical neurons
b. the expression of nmda receptors is more abundant in hippocampal than cortical neuorns
c. hippocampal neurons generate a more negative postsynaptic potential than cortical neurons
d. hippocampal synapses have faster neurotransmitter diffusion rates compared to cortical synapses

The correct option is B: the expression of NMDA receptors is more abundant in hippocampal than cortical neurons

Explanation:

Global Ischemia is known to cause damage to neurons in distinct areas of the brain. The expression of NMDA, a pattern of selective vulnerability capable of being reproduced is usually seen in the dorsal hippocampal of animals, especially rodents, where the neurons in the CA1 area is mainly affected. Thus, this explains why the hippocampal is the area well faced with a high risk of vulnerability during global ischemia.

panem is a communist totalitarian dictatorship where all the resources and how they are allocated belongs to the capitol. the districts exist only to provide goods and services for the capital and most of the citizens live in poverty. it is a police state where the "peacekeepers" use force and threats to keep the people under control. dissent is outlawed and those who disobey the law are executed, flogged, or turned into avoxes. the games are another means in which the ruling elite in the capitol exert their power over the districts. when reading the books i drew parallels between panem and the soviet union and north korea. in no way is panem capitalist. the people in the capitol are wealthy but the majority of them are involved in the government somehow. it was the same way in the former soviet union where bigwigs in the communist party and high ranking government officials were given access to goods, services, medical treatments not available to the general public. if you think panem has a capitalist economy you need to brush up on your economics.  

isb

explanation:

ahw