Nervous System and Neurons

What is the main function of the Central Nervous System?

• Control muscle movement

• Process and coordinate sensory data and motor commands

• Regulate body temperature

• Digest food

Which part of the nervous system is responsible for transmitting information between the brain and the rest of the body?

• Brainstem

• Spinal cord

• Cerebellum

• Pons

Describe the structure of a neuron.

• The structure of a neuron includes a nucleus, mitochondria, and golgi apparatus.

• A neuron consists of a cell wall, chloroplasts, and endoplasmic reticulum.

• The structure of a neuron includes a cell body (soma), dendrites, and an axon.

• Neurons are made up of cytoplasm, vacuoles, and ribosomes.

What is the function of dendrites in a neuron?

• Store neurotransmitters

• Produce myelin sheath

• Receive signals from other neurons and transmit them to the cell body.

• Generate electrical impulses

Explain the process of chemical transmission at a synapse.

• The process of chemical transmission at a synapse includes neurotransmitter release, diffusion, receptor binding, and signal initiation.

• In the process of chemical transmission at a synapse, the neurotransmitter is absorbed by the presynaptic neuron.

• The process of chemical transmission at a synapse involves electrical impulses instead of neurotransmitters.

• Chemical transmission at a synapse occurs through direct cell-to-cell contact.

What are the components of a reflex arc?

• receptor, sensory neuron, motor neuron, effector

• stimulus, response, feedback loop, control center

• afferent neuron, efferent neuron, central nervous system, peripheral nervous system

• receptor, sensory neuron, integration center, motor neuron, effector

Which part of the nervous system controls voluntary movements?

• limbic system

• autonomic nervous system

• somatic nervous system

• endocrine system

What is the role of neurotransmitters in neuronal communication?

• Neurotransmitters are only found in the peripheral nervous system.

• Neurotransmitters regulate heart rate and blood pressure in the body.

• Neurotransmitters transmit signals across synapses between neurons by binding to specific receptors on the postsynaptic neuron.

• Neurotransmitters are responsible for maintaining the structural integrity of neurons.

How does the Peripheral Nervous System differ from the Central Nervous System?

• The Central Nervous System connects the body to the brain

• The Peripheral Nervous System connects the central nervous system to the body, while the Central Nervous System includes the brain and spinal cord.

• The Peripheral Nervous System includes the brain and spinal cord

• The Peripheral Nervous System is responsible for thoughts and emotions

What is the significance of the myelin sheath in neurons?

• It causes neuron degeneration

• It regulates body temperature

• It stores excess neurotransmitters

• It insulates and speeds up the transmission of electrical impulses along the neuron.