Nt1310 Unit 3

Words: 830
Pages: 4
Open Document
1. Describe how the resting potential is created by the distribution of sodium and potassium ions.

 In the resting state, a sodium concentration gradient and electric field would influx (the entry of ions from the outside to the inside) whereas a potassium concentration gradient would efflux (the entry of ions from the inside to the outside)

 A resting neuron has more negative ions on the inside of the cell relative to the extracellular space around it, which has more positive ions. This phenomenon is known as the neuron’s resting membrane potential which sits at -70mv. One may question, “where does this charge come from?” To answer, on the outside of the resting neuron, there is a bunch of positively charged Na+ ions floating around …show more content…
However, on the inside of the resting neuron, there are many positively charged K+ ions. The Na+ sodium ions in the extracellular space outnumbers the K+ sodium ions in the intracellular space (K+ ions are also mixed with anion molecules that are present inside) which makes the intracellular space more negative on the inside than the outside. Also, since there are more positively charged Na+ ions outside the neurons than positively charged K+ ions inside, the cells interior has an overall negative charge. When a neuron has a negative membrane potential like this, it is said to be polarized. Overall, there is a dynamic equilibrium between the inside and the outside, which results in a resting membrane potential which is set at -70 mv for most neurons. There is an equilibrium because there is an uneven distribution of ions, or charged particles, between the inside and the outside of the cell and by the different permeability of the membrane to different …show more content…
It is a membrane associated protein where two K+ ions are pushed out of the membrane for every three Na+ ions that are pushed in . This creates a difference in the concentration of Na+ and K+ ions and a difference in charges which makes it more positive outside the neurons. In other words, as both electrical and a concentration gradients are created, the Na+ sodium ions in the extracellular space outnumbers the K+ sodium ions in the intracellular space (inside of the neuron is negative relative to the outside based on the number of anions present inside). A sodium-potassium pump is necessary for the inside of the neuron to become more negative relative to the outside of the neuron.

3. Describe how an action potential is started (how is the threshold of excitation reached at the axon
Show More

Related Documents: Nt1310 Unit 3

Nt1310 Unit 3

Discuss the case when the load is low or high in a Bit Map Protocol. What will be the wait slot for a low numbered station and high numbered station? Collision occurs when two frames are transmitted simultaneously and they overlap in time, resulting in a distorted signal. It affects the overall performance of the system. This can be observed especially when the distance between stations is large and the packet length is short. There are some protocols which can resolve this problem of collision…

Words 833 - Pages 4

Nt1310 Unit 3

instructional voice at a good pace. PowerPoint and written instructions on the whiteboards and handouts reinforces learning. Also, the use of many visual components allows for student to gain mastery over the content c. IEP – the level of difficult of the “3-2-1” Note Taking activity can be adjusted to the level of the learner. Reading can be done in pairs with stronger readers assisting the weaker readers. 2.…

Words 379 - Pages 2

Nt1310 Unit 3

In this report, I explain the impacts of galvanised steel capping, propane for torches, plasterboard, copper pipes, electric cables, bricks. The objective of COSHH is to prevent, or to adequately control, exposure to substances hazardous to health, so as to prevent ill health. With COSHH being a required regulation for all elements that could cause damage to the body or environment at CPL is a regulation that will apply to storage as knowledge of what the substances are and how to use/handle them…

Words 631 - Pages 3

Nt1310 Unit 3

i. Government should have proper security infrastructure in place in order to secure their confidential data. Government should take appropriate security measure by procuring the required security tools in order to safeguard their critical infrastructure from various malicious activities on the network. Government should hire competitive staff in order to safeguard the confidential information on their staff. Government should take necessary steps in hiring the competitive and qualified staff in…

Words 2029 - Pages 9

Nt1310 Unit 3

Complete Name: Unit 3 Student Name: Wright, Eboni ********************************************************************************************************** 1. Case Study 1: Taxes (p. 153) ********************************************************************************************************** 2. Given her current situation, list some suggestion on what Shelby should do with a tax refund of $800. Student Answer: With a 800 discount, Shelby should utilize it to pay Mastercard charge. Less…

Words 1064 - Pages 5

Nt1310 Unit 3

that people know about work hazards and how to protect themselves. 2. OSHA is Occupational Safety and Health Administration which provides a workplace free from serious recognized hazards. OSHA standards are design to protect workers from hazards. 3. Exposure Control Plan that includes the requirements of the OSHA Bloodborne Pathogens Standard. 4. The Chain of Infection is when the transmission occurs, and the agent leaves its reservoir or host through a portal of exit, is conveyed by…

Words 232 - Pages 1

Nt1310 Unit 3

Explain that the discussions will be anonymized and used solely to improve the system's effectiveness. 3. What is the difference between a'smart' and a'smart'? Data Security and Access Control: Implement robust data security measures to protect sensitive call data and M&E findings. Restrict access to authorized personnel only and ensure proper data storage…

Words 458 - Pages 2

Nt1310 Unit 3

Question 3 Compare and contrast the types of research methods used in scholarly studies on your proposed (or School-approved) dissertation topic. Synthesize your findings and propose a best-fit method for your dissertation research. Within the context of such a study, identify and analyze the issues associated with each of the following: ethics, sampling, validity, reliability, and bias. Research Methods Research methods are the strategies used to study something or phenomenon…

Words 4466 - Pages 18

Nt1310 Unit 3

poster that is need in A3, they would have to set the paper size to A3 which could be time consuming for the user. Device Drivers To be able to change the device drivers, you will have to click START > DEVICE AND PRINTERS. When the screen comes on it will come up with sections where you can click the settings. The strength of having a device drivers, is that you are able to install the device if it does not automatically install, which will then benefit the user so they are able to use the device…

Words 663 - Pages 3

Nt1310 Unit 3

Standard 3.1 Task 1 The evidence provided was overall EPP data, but was not disaggregated by specialty licensure area or compared to the student population of the university. Teacher candidates’ socioeconomic status (SES) and disaggregated demographic data on admitted candidates was not provided in the evidence. What are the demographic data of the EPP candidates disaggregated by specialty licensure area or across the university? Standard 3.1 Task 2 The EPP did not address how they will record…

Words 627 - Pages 3