Neurotransmitters are released from neurons due to the opening of ____________. Select one: a. voltage gated Na channels b. voltage gated  K channels c. voltage gated Ca channles d. voltage gated Cl channels e. voltage gated proton channels

A bundle of axons in the peripheral nervous system is called a: A. Neuron B. Ganglion 1 C. Tract

Which of the following neuronal changes is associated with short term synaptic strength? O a. Changes in the size of neural spines o b. Changes in the shape of neural spines с. Increased production of neurotransmitter vesicles in the presynaptic cell o d. Increased buildup of Ca²+ in the terminal knob of the presynaptic axon О е. Increased expression of postsynaptic neurotransmitter receptors

Neurons have three main components. Describe the function of each one a. Dendrites b. Cell body c. Axon i. Myelin sheet

Use this illustration to place these events in the order they occur during synaptic communication: Column A Column B a. Voltage gated sodium channels carry the action potential to the synapse by allowing the influx of sodium ions. 1. 1 2 b. An increase in calcium levels triggers vesicle release. 3. 3 c. Sodium enters the post-synaptic cell, causing it to depolarize. 4. 4 d. Sodium influx at the synapse activates voltage gated 5. calcium channels which allow calcium ions to enter the presynaptic neuron. 6. 6. e. Neurotransmitters are released into the synaptic cleft. f. Ligand-gated ion channels are opened by the neurotransmitters. 2.

QUESTION 9 Identify the indicated functional classification of neuron in the image. Sensory receptor -Effector organ effector sensory neuron motor neuron O interneuron

Which of the following is/are found only in the PNS? a. Nerves b. Astrocytes c. Myelin d. Lipofuscin e. Unmyelinated axons

A drug is called an agonist if it ________.a. blocks a receptorb. interferes with neurotransmitter reuptakec. acts like the endogenous neurotransmitter bybinding to its receptord. blocks the voltage-gated calcium ion channel

Match each type of neuroglial cell with its correct function._____ Schwann cells                        a. Phagocytic cells of the CNS_____ Ependymal cells                   b. Surround the cell bodies of_____ Microglial cells neurons in the PNS                                                  c. Create the myelin sheath                                                      in the PNS_____ Oligodendrocytes                                                 d. Anchor neurons and blood vessels,                                                              maintain extracellular nvironment around                                                    neurons, assist in repair of damaged brain                                                      tissue_____ Satellite cells                                                e. Create the myelin sheath in                                               the CNS_____ Astrocytes                                             f. Ciliated cells in the CNS…

Predict what would happen if the calcium ion channels in the axon terminal were blocked   a. It would inhibit exocytosis of neurotransmitters into the synaptic cleft   b. It would activate exocytosis of neurotransmitters into the synaptic cleft   c. It would shut off synaptic transmission between two neurons   d. a and b   e. a and c