Journal 4 This week we began to discuss hiring and promotion decisions and affirmative action. One of the topics mentioned in hiring and promotion decisions is sex stereotyping. This issue is important to me because I grew up being told that girls do this and boys do that. I have four brothers and one sister that I didn’t really get along with. This led to me spending a lot more time rough housing with my brothers. I would definitely describe myself as a tomboy for the most part. Sometime at…
19: Is Affirmative Action Necessary to Achieve Racial Equality in the United States?” Is Affirmative Action Necessary to Achieve Racial Equality in the United States? Over the years, the policy of Affirmative Action has become a controversial topic throughout the political world. A question many politicians and scholars seem to come across is “is the policy of Affirmative Action Necessary to achieve racial equality in the United States?” Many would argue, yes affirmative action is necessary,…
from the axon to the spinal cord. In the spinal cord the axon on will send signals to many neurons from other cells and then it will generate an order. The membrane potential is an electrical state of the cell membrane and it allows gradients that cause ions to move across the cell membrane. The dispersal of charge across the cell membrane is measured in (mV). The resting membrane potential is the difference between the charges inside and outside the sarcolemma. The intracellular concentration…
of the presynaptic cell and will release its content into the synaptic cleft after action potential has been reached. The relationship between a synaptic vesicle and a neurotransmitter is that the synaptic vesicle will contain neurotransmitter which are macromolecules that neurons use to communicate with each other. For worms, the synaptic vesicles release acetylcholine which will go into the synaptic cleft cause by electrical impulses that go down the axon (http://www.worm) The 5 worms that…
affirmative action programs require colleges to accept a specific percentage of a racial group. Affirmative action can be defined as a policy favoring minorities that provides them with equal opportunities for education or in the workplace.Oftentimes affirmative action is viewed as positive discrimination. Supporters of college affirmative action policies believe it is necessary to provide minorities with a chance to reach their full capabilities. However, with race based affirmative action…
The features of action potentials are: threshold, all or none, is regenerative, saltatory conduction and refractory period. The threshold is generated when the membrane of the cell is depolarize around -50mv to evoke the action to occur. Action potential is all or none because is either no action potential or a full amplitude of action potential. We say that action potential is regenerative since a new action potential is generated at each location along the cell membrane. The saltatory…
The cell is at rest at -70mV and as it gets more positive, it reaches threshold (gets more excited). This change in electrical potential also excites neighboring sodium and potassium channels to open up in a chain reaction, which is known as the action potential. Because the sodium influx at the beginning is faster than the outflux of potassium, the inside of axon at the beginning of the excitation is negative while the outside is positive. But a little after the first sodium and potassium ion…
This allows the action potential to move unidirectional. For instance, an action potential at the dendrites will move to the cell body, and then from the cell body it will be propagated in one direction along the axon until it gets to the terminal. The axons of some neurons have an extra layer called a myelin sheath (myelinated). The myelin sheath is an insulator that helps increase the velocity at which an action potential is propagated along an axon. The myelin…
I. Introduction Action potentials are generated as a result of a neuron’s membrane reaching a specific threshold. In order to reach this threshold, a cell must depolarize. Typically, cells depolarize with the opening of voltage-gated sodium channels. During the rising phase of the action potential, these channels allow positive sodium ions to flow into the cell in what is called the depolarization phase. The flow of these ions into the cell is often referred to as the sodium current. Once the…
In my opinion, the United states does not need affirmative action any longer. It was understandable to have back in the 1960s when it was first enforced, but doesn’t have a reason to be used any longer. Many of the minorities in the united states feel as if they are treated like they are less capable to succeed than White-Americans are, because of affirmative action. Giving the minorities a pass to be accepted into colleges or be employed, makes it more evident that there is still a racial…