Types of Tissue Part 4: Nervous Tissue

The video explains the nervous system's role in the human body, focusing on neurons, their structure, and function. It covers how neurons transmit signals through electrical impulses and the organization of the nervous system into central and peripheral parts. The video also discusses neuron types and their roles in sensory and motor functions.

What is the primary function of the nervous system?

• To digest food

• To carry signals from the brain to the body

• To store energy

• To circulate blood

Which type of cell is the main component of the nervous system?

• Epithelial cell

• Connective cell

• Neuron

• Muscle cell

What is the role of the myelin sheath?

• To slow down nerve impulses

• To store neurotransmitters

• To protect the axon and speed up impulses

• To divide neurons

What are Schwann cells responsible for?

• Generating electrical impulses

• Connecting neurons to muscles

• Forming the myelin sheath in the peripheral nervous system

• Producing neurotransmitters

How are neurons classified by structure?

• By their color

• By the number of processes extending from the cell body

• By their location in the body

• By their size

Which type of neuron transmits signals from sensory receptors to the central nervous system?

• Sensory neuron

• Bipolar neuron

• Interneuron

• Motor neuron

What is membrane potential?

• The number of dendrites on a neuron

• The speed of nerve impulse transmission

• The difference in charge across a neuron's membrane

• The ability of a neuron to divide

What triggers the opening of voltage-gated ion channels?

• A change in membrane potential

• The presence of neurotransmitters

• Physical deformation of the receptor

• The release of hormones

What are the two main parts of the nervous system?

• Sensory and motor divisions

• Sympathetic and parasympathetic divisions

• Somatic and autonomic nervous systems

• Central and peripheral nervous systems

Which division of the autonomic nervous system is responsible for 'rest and digest' functions?

• Somatic division

• Central division

• Sympathetic division

• Parasympathetic division