Draw a basic animal cell (include the nucleus). Add and label the following: Dendrites Dendritic spines Axon hillock Axon Axon terminals/ synaptic boutons myelin What are the functions of each structure you added?  What direction does information travel within a single neuron?

Glial cells take care of neurons. Review the different types of glial cells by matching each description with the appropriate cell. You may use answers more than once. 1. Wrap around axons in the CNS:                                                                                              2. Wrap around axons in the PNS:   3. Regulate exchange of substances with capillaries and control interstitial space:   4. Surround, regulate, and protect cell bodies of neurons in the PNS:   5. Tiny macrophages that engulf unwanted substances and keep the CNS "clean":   6. Provide a supportive network:   7. Help produce cerebrospinal fluid at choroid plexus:

Which part of the neuron provides insulation for the neurons, to prevent the loss of charged ions from the nerve cell? glial cell cell body myelin sheath dendrite axon

Which of the following is FALSE for graded potentials? They form in dendrites and cell bodies. They can be generated by the opening of chemical or mechanically gated ion channels. They increase in amplitude as they move away from the stimulus point. Can be either inhibitory or excitatory.

Which of the following best describes structure 6? 6 3 4 7 Releases neurotransmitters Gaps that allow for nerve impulses to travel quickly Neuron's nucleus is found here Type of glial cell Receive signals from other cells Transfers signals; can range from 1 mm to 1 m in length Functions include protecting and insulating the cell

Which of the following would you NOT expect with respect to variation in neural conduction velocity? Neural conduction speed increases over developmental time as Schwann cells synthesize myelin sheaths, insulating neurons Neural conduction velocity is higher in invertebrate species with insulating sheaths functionally equivalent to vertebrate myelin Neurons and species with larger axon diameters should have greater conduction velocities Neural networks with greater serial processing (i.e., lines of connecting neurons) should have greater neural conduction velocities. The thyroid hormones (triiodothyronine and thyroxine) have a range of roles in regulating growth and metabolism. Thyroid hormones act throughout the body to regulate protein synthesis, long bone growth, and neural maturation. This represents an ______ effect of thyroid hormones. At the same time, through some unknown mechanism, application of thyroid hormones results in an immediate reduction in body temperature, which…

In a neuron, the conducting regions of the capacitor are represented by the intracellular and extracellular solutions. The non-conducting insulator of the capacitor is represented by what cell element? Receptors Lipid bilayer Axon diameter Channels

Use the terms provided below to differentiate neurons and neuroglia. Each term will only be used once.   Satellite cells Schwann cells Ependymal cells Oligodendrocytes Astrocytes Microglia Pseudounipolar Bipolar Multipolar     Matching Description Provided Term Matching Description Provided Term 1.    1 axon and 1 dendrite   2.    Immune in CNS   3.    1 axon and many dendrites   4.    Myelin in CNS   5.    Single cell process   6.    Cerebrospinal fluid   7.    Support in CNS   8.    Myelin in PNS   9.    Support in PNS

Match the description with the statement that best describes the following regions                                                             synaptic knob                                                             axon hillock                                                             dendrites                                                             axon A. elongated projection that conducts electrical signals over long distances B. receives input from other neurons C. region of high denisty of voltage-gated channels, known as the trigger zone D. contains numerous vesicles containing neurotransmitter

Put the following steps that occur at the synapse during information transfer between neurons in order. 1 [ Choose ] [Choose ] Calcium causes release of neurotransmitter from cells Channel proteins open to allow Na+ into cells and generate an action pote Neurotransmitter binds to a specific receptor on post-synaptic neuron Neurotransmitter diffuses into synaptic space Action potential arrives and causes Ca2+ to diffuse [ Choose 4 [ Choose ] [ Choose ]