603 General

What are the main parts of a neuron and their functions?

• Roots, stem, leaves, flowers

• Nucleus, mitochondria, ribosomes, Golgi apparatus

• Lungs, heart, liver, kidneys

• Dendrites, cell body, axon, axon terminals

Describe the structure of a neuron and how it relates to its function.

• A neuron is made up of a cell wall, chloroplasts, and vacuoles. The cell wall provides structure, chloroplasts perform photosynthesis, and vacuoles store water and nutrients.

• The structure of a neuron includes a cell body, dendrites, and an axon. The dendrites receive signals from other neurons, the cell body processes these signals, and the axon transmits signals to other neurons.

• The structure of a neuron includes a nucleus, mitochondria, and ribosomes. The nucleus stores genetic information, mitochondria produce energy, and ribosomes synthesize proteins.

• Neurons consist of a cell body, cytoplasm, and Golgi apparatus. The cell body contains the nucleus, cytoplasm supports cellular activities, and the Golgi apparatus packages and distributes proteins.

Explain the significance of dendrites and axons in a neuron's structure and function.

• Dendrites receive signals and axons transmit signals

• Dendrites and axons have no significance in a neuron's structure and function

• Dendrites and axons are only found in non-functional neurons

• Dendrites transmit signals and axons receive signals

What are the different types of neuroglia and their roles in the nervous system?

• Astrocytes, oligodendrocytes, microglia, and ependymal cells; providing physical support, maintaining the blood-brain barrier, regulating the chemical environment, and participating in immune responses

• Cerebrospinal fluid, ventricles, meninges, and choroid plexus; regulating the chemical environment

• Myelin, Schwann cells, neurotransmitters, and synaptic vesicles; providing physical support

• Neurons, axons, dendrites, and synapses; transmitting electrical signals

Compare and contrast the functions of astrocytes, oligodendrocytes, and microglia.

• Oligodendrocytes provide structural support and regulate the extracellular environment.

• Astrocytes produce myelin to insulate axons in the central nervous system.

• Astrocytes provide structural support, regulate the extracellular environment, and contribute to the blood-brain barrier. Oligodendrocytes produce myelin to insulate axons in the central nervous system. Microglia act as the primary immune cells in the brain, removing debris and pathogens.

• Microglia contribute to the blood-brain barrier and remove debris and pathogens.

How do Schwann cells and satellite cells differ in their functions within the nervous system?

• Schwann cells support and protect cell bodies within ganglia, while satellite cells myelinate axons.

• Schwann cells myelinate dendrites, while satellite cells support and protect axons within ganglia.

• Schwann cells myelinate axons, while satellite cells myelinate dendrites within ganglia.

• Schwann cells myelinate axons, while satellite cells support and protect cell bodies within ganglia.

Discuss the role of neuroglia in maintaining the homeostasis of the nervous system.

• Neuroglia have no role in maintaining homeostasis

• Neuroglia provide support and protection to neurons, regulate the chemical environment, and repair damaged neural tissue.

• Neuroglia are responsible for transmitting nerve impulses

• Neuroglia are only found in the peripheral nervous system

Explain how neuroglia support and protect neurons in the nervous system.

• Neuroglia support and protect neurons by providing physical support, insulation, and nutrients, as well as assisting in repair and maintenance of the nervous system.

• Neuroglia support and protect neurons by attacking and destroying them

• Neuroglia support and protect neurons by causing inflammation and damage

• Neuroglia support and protect neurons by competing for nutrients and resources

Describe the involvement of neuroglia in the repair and regeneration of nervous tissue.

• Neuroglia provide structural support, regulate the chemical environment, and promote the growth of new neurons.

• Neuroglia have no role in regulating the chemical environment

• Neuroglia inhibit the growth of new neurons

• Neuroglia do not provide structural support

What is neurotransmission and how does it occur in neurons?

• Neurotransmission occurs in neurons through the release of neurotransmitters and their binding to receptors on other neurons.

• Neurotransmission occurs in neurons through the release of oxygen and its utilization by other neurons.

• Neurotransmission occurs in neurons through the release of hormones and their binding to receptors on other neurons.

• Neurotransmission occurs in neurons through the release of glucose and its absorption by other neurons.