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Neuron Structure and Axonal Transport

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Questions and Answers

What is the function of dendrites in a neuron?

To store neurotransmitters

To provide structure and stability

To carry outgoing signals to target cells

To receive incoming information (correct)

Which protein is responsible for the anterograde transport of secretory vesicles along the axon?

DYNEIN

KINESIN (correct)

Microtubules

Ribosomes

Where are afferent neurons located and what is their function?

In the CNS, involved in signal integration and reflexes

Transmit information into CNS from sensory receptors at peripheral endings (correct)

Transmit information out of CNS to effector cells

Only located in the axon terminals, releasing neurotransmitters

What is the role of axon terminals in a neuron?

Release neurotransmitters and branch out at the axon end (D) Signup and view all the answers

What is the function of astrocytes in the central nervous system (CNS)?

Regulate the composition of the extracellular fluid and form the blood-brain barrier (C) Signup and view all the answers

What is the role of microglia in the brain?

Act as immune system cells, eating up cell debris or bacteria (C) Signup and view all the answers

What is the function of oligodendrocytes in the central nervous system (CNS)?

Form myelin sheaths around CNS neuron axons (B) Signup and view all the answers

What distinguishes Schwann cells from other glial cells?

They form myelin sheaths around neuronal axons of the peripheral nervous system (PNS) (C) Signup and view all the answers

What is the primary function of ependymal cells in the central nervous system (CNS)?

Regulate the production and flow of cerebrospinal fluid (CSF) (B) Signup and view all the answers

What characterizes plasticity in neurons?

Ability of neurons to remodel their synaptic connections, declining with age (C) Signup and view all the answers