TOPIC 18-LEARNING OUTCOMES.docx

TOPIC 18-LEARNING OUTCOMES.docx - TOPIC 18-LEARNING...

This preview shows page 1 - 2 out of 4 pages.

TOPIC 18-LEARNING OUTCOMES. NEURONS, SYNAPSES, AND SIGNALING 1. How does nervous system process info? 3 stages? a. Sensory input: detect external stimuli & internal conditions and transmit info along sensory neurons b. Integration: sensory info sent to brain, where interneurons integrate and process the info c. Motor output: motor output leaves the brain/ganglia by motor neurons, which trigger muscle/gland activity (response) 2. Difference between CNS & PNS a. CNS: integration here. Includes brain & nerve cord (spinal cord) b. PNS: leaves brain & spinal cord & travel certain areas of the body… the PNS brings info into & out of CNS 3. Parts of human neuron a. Cell body: most of neurons organelles (like nucleus) are here b. Dendrites: highly branched extensions of CB that receive signals from other neurons c. Axon: typically longer extension that transmits branches to other cells at synapses d. Axon hillock: where the axon joins the CB. Responsible for collecting electric signals from dendrites… if total electric signal strong enough, AP will fire e. Synapse: where NT leave the presynaptic cell(neuron) & move to the postsynaptic cell(neuron/muscle/gland). Junction between cells 4. Glia cells a. Nourish and insulate neurons. Help with structure & function of neurons 5. Types of glia cells a. Astrocytes b. Oligodendrocytes c. Shwann cells 6. Astrocytes a. In CNS, give structural support & nutrients for neurons b. Induce formation of tight junctions between capillary cells which help form blood brain barrier (prevents large hydrophobic molecules like pathogens into cerebrospinal fluid, & allows small important stuff to pass) 7. Oligodendrocytes a. In CNS, form myelin sheaths around axcons of vertebrate neyrons b. Provide electrical insulation of axon 8. Shwann cells a. In PNS, form myelin sheaths around axons of vertebrate neyrons b. Provide electrical insulation of axon 9. MS a. Multiple sclerosis, an autoimmune disease in which myelin sheaths gradually
Image of page 1

Subscribe to view the full document.

Image of page 2
You've reached the end of this preview.
  • Spring '14
  • c. Axon, B. Axon Hillock, d. Axon

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern