nervous system 2425 for moodle pre session

What are the main cells that make up the nervous system?

Neurones and Neuroglia.

What are the main components of the central nervous system?

The brain and spinal cord.

What is the function of the myelin sheath?

To insulate the axon and speed up nerve impulse transmission.

What is the definition of pain according to the International Association for the Study of Pain?

An unpleasant sensory and emotional experience associated with actual or potential tissue damage.

What are the two main types of pain classification?

Acute and chronic pain.

What part of the brain is responsible for motor speech?

Broca's area.

What is the role of nociceptors?

To detect signals from damaged tissue or the threat of damage.

What is the function of the somatic nervous system?

To carry conscious sensations and innervate voluntary muscle movements.

What distinguishes sensory cranial nerves from others?

They often have only sensory or only motor function.

What is the autonomic nervous system responsible for?

Involuntary functions such as sympathetic and parasympathetic responses.

What structure is associated with sharp pain processing?

Myelinated A-fibres.

What is the purpose of the spinal nerves?

To relay sensory and motor information between the body and the central nervous system.

What happens at the neuromuscular junction?

Synaptic transmission occurs, allowing communication between neurons and muscles.

What type of receptors respond to noxious cold?

Thermal nociceptors.

How is pain modulation described in Gate Control Theory?

It suggests that non-painful input can close the gates to painful input, reducing the perception of pain.

What are the five bilateral plexuses formed by spinal nerves?

Cervical plexus, brachial plexus, lumbar plexus, sacral plexus, coccygeal plexus.

What areas of the brain are involved in pain perception?

Thalamus, somatosensory cortex, and limbic system.

What type of pain is often associated with inflammation of surrounding tissue?

Silent nociceptor pain.

What does the term 'neuromuscular junction' refer to?

The synapse between a motor neuron and a muscle fiber.

How does chronic pain differ from acute pain in duration?

Chronic pain may last for years, whereas acute pain usually lasts until the noxious stimulus is removed.