Nerves and Reflex arc

What is the main component of the Central Nervous System?

• heart

• spinal cord

• liver

• brain

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

• Brain stem

• Cerebellum

• Spinal cord

• Pons

Explain the process of a reflex arc.

• The process of a reflex arc involves a sensory receptor detecting a stimulus, sending a signal via sensory neuron to the spinal cord, synapsing with an interneuron, transmitting the signal to a motor neuron, and finally causing a response in the effector organ.

• The process of a reflex arc starts in the brain instead of the spinal cord.

• The reflex arc involves only one neuron transmitting the signal from the sensory receptor to the effector organ.

• The sensory receptor directly activates the effector organ without involving any neurons.

What are the basic functional units of the nervous system?

• Neurons

• Synapses

• Axons

• Glial cells

Where do neurons communicate with each other?

• Axons

• Synapses

• Dendrites

• Cell body

Define a synapse.

• A synapse is a structure that permits a neuron to pass an electrical or chemical signal to another neuron or to the target effector cell.

• A synapse is a type of muscle in the body.

• A synapse is a type of plant cell.

• A synapse is a type of bone found in the human body.

What is the function of a nerve in the nervous system?

• Produce oxygen

• Regulate body temperature

• Transmit electrical signals

• Digest food

What is a stimulus in the context of the nervous system?

• Any event or situation that evokes a response from the nervous system.

• A chemical released by the brain

• A type of neuron

• A form of memory storage

Describe the response phase in the nervous system.

• The response phase is skipped in the nervous system

• The response phase occurs after motor responses

• The response phase in the nervous system involves the transmission of signals from sensory receptors to the central nervous system, processing of information, and generation of appropriate motor responses.

• The response phase involves only sensory receptors

Which part of the nervous system includes the brain and spinal cord?

• Peripheral nervous system

• Central nervous system

• Autonomic nervous system

• Somatic nervous system