Nervous and Endocrine Systems: Impulses

The video tutorial explains the concept of networks, comparing communication networks to the body's network of nerve cells. It details how nerve impulses travel through neurons, highlighting their speed of up to 120 meters per second. The tutorial also describes how impulses jump across neuron gaps with the help of chemical signals, providing a simplified view of this complex process.

What is a common feature between phone calls, internet usage, and the human body's nerve cells?

• They all involve simple, direct connections.

• They all rely on complex networks.

• They all operate at the same speed.

• They all use chemical signals.

In what order do nerve impulses travel through neurons?

• Motor neuron to sensory neuron to interneuron

• Sensory neuron to interneuron to motor neuron

• Motor neuron to interneuron to sensory neuron

• Interneuron to sensory neuron to motor neuron

How fast can nerve impulses travel?

• 60 meters per second

• 150 meters per second

• 90 meters per second

• 120 meters per second

What must a nerve impulse do as it travels from one neuron to another?

• It must slow down.

• It must stop and restart.

• It must jump across gaps.

• It must change direction.

What assists the electrical impulse in a neuron to travel across gaps?

• A thermal signal

• A physical bridge

• A magnetic signal

• A chemical signal