Functions and Structures of the Nervous System

The video tutorial provides an in-depth look at nervous tissues, focusing on neuron structure and function, ganglia, and the peripheral nervous system. It explains the roles of Schwann cells and connective tissue sheaths in nerve support and myelination. The tutorial concludes with a summary of key concepts and contact information for further inquiries.

What is the primary function of neurons in the nervous tissue?

• To provide structural support

• To send and receive signals

• To store energy

• To produce hormones

Which part of the neuron is responsible for increasing the surface area to receive signals?

• Dendrites

• Cell body

• Nucleus

• Axon

Where are the cranial spinal ganglia primarily located?

• Within the brain

• Lateral to the spinal cord

• In the digestive system

• Near the heart

What distinguishes parasympathetic ganglia from sympathetic ganglia?

• Location within the central nervous system

• Presence in the digestive system walls

• Color of the ganglia

• Size of the neurons

What is the primary role of Schwann cells in the peripheral nervous system?

• To generate electrical impulses

• To myelinate axons

• To produce neurotransmitters

• To store calcium

What is the appearance of a peripheral nerve due to its structure?

• Wavy and twisted

• Flat and broad

• Smooth and straight

• Circular and compact

What is the main component of myelin that gives it a pale appearance in histological preparations?

• Carbohydrates

• Proteins

• Phospholipids

• Nucleic acids

What is the function of the epineurium in a peripheral nerve?

• To produce myelin

• To protect and support

• To transmit signals

• To store nutrients

Which cells are responsible for producing the connective tissue sheaths in peripheral nerves?

• Oligodendrocytes

• Fibroblasts

• Schwann cells

• Neurons

What is the significance of the nodes of Ranvier in a myelinated axon?

• They connect neurons to muscles

• They produce myelin

• They store neurotransmitters

• They allow for faster signal transmission