Nervous system pt 1

Multiple Choice

Which of the following best describes the purpose of optogenetics in neuroscience research?

• To use light to control neurons in living tissue

• To record electrical activity from muscles

• To measure blood flow in the brain

• To stimulate muscle contraction with electricity

Multiple Choice

How do fluorescent proteins help visualize neural activity?

• They change the shape of neurons

• They glow when a specific frequency of light shines on them

• They block neural signals

• They destroy neurons

Multiple Choice

Which type of channel used in optogenetics causes a neuron to become hyperpolarized when light is turned on?

• Channelrhodopsin (ChR2)

• Halorhodopsin (Halo)

• Fluorescent protein

• Voltage-gated sodium channel

Multiple Choice

Which of the following best describes the main function of the nervous system?

• It coordinates actions and senses by sending electrical signals throughout the body.

• It only controls voluntary muscle movements.

• It is responsible for producing hormones.

• It stores fat and energy for the body.

Multiple Choice

What are the two main divisions of the nervous system?

• Central and Peripheral

• Autonomic and Somatic

• Sympathetic and Parasympathetic

• Sensory and Motor

Multiple Choice

Which type of neuron acts as a connecting bridge between sensory and motor neurons?

• Sensory neuron

• Motor neuron

• Interneuron

• Glial cell

Open Ended

Explain the difference between afferent and efferent nerves in the nervous system.

Open Ended

Describe how sensory information is processed and responded to by the nervous system, using the roles of different types of neurons and the central nervous system.

Multiple Choice

What is the primary difference between white matter and gray matter in the nervous system?

• Gray matter is mainly neuron somas, white matter is mostly axons.

• White matter is mainly neuron somas, gray matter is mostly axons.

• Both are composed of neuron somas.

• Both are composed of axons.

Multiple Choice

Which of the following are the three main regions of the brain as shown in the diagram?

• Cerebrum, Cerebellum, Brainstem

• Cerebrum, Cortex, Medulla

• Cerebellum, Cortex, Spinal cord

• Cerebrum, Medulla, Brainstem

Open Ended

Explain the importance of the folds in the cerebrum and how they contribute to brain function.

Multiple Choice

Which of the following lobes is responsible for controlling eyesight?

• Frontal lobe

• Parietal lobe

• Occipital lobe

• Temporal lobe

Multiple Select

Select all the functions associated with the cerebellum.

• Controls balance and coordination

• Regulates heartbeat and breathing

• Involved in thought, emotions, and social behavior

• Provides motor and sensory function to facial muscles