Human Anatomy: Neurons and the Nervous System

The video tutorial provides an in-depth look at the human nervous system, focusing on neurons, the specialized cells that transmit signals throughout the body. It explains the types of neurons—sensory, motor, and interneurons—and their roles in processing and responding to stimuli. The structure of neurons, including dendrites and axons, is discussed, highlighting their function in signal transmission. The video also covers the synaptic signaling process and the importance of the myelin sheath in facilitating rapid communication between neurons.

What is the primary function of the nervous system?

• To pump blood

• To transmit signals across the body

• To digest food

• To produce hormones

What type of cell is the basic unit of the nervous system?

• Epithelial cell

• Neuron

• Muscle cell

• Red blood cell

Which structure connects neurons to each other?

• Myelin sheath

• Synapse

• Dendrite

• Axon

Which type of neuron is responsible for receiving information from the outside world?

• Motor neurons

• Sensory neurons

• Interneurons

• Glial cells

What is the function of motor neurons?

• To produce myelin

• To send impulses to muscles

• To connect neurons within the brain

• To receive sensory information

What is the central part of a neuron called?

• Synapse

• Axon

• Dendrite

• Soma

What is the role of dendrites in a neuron?

• To carry impulses away from the cell body

• To insulate the neuron

• To produce neurotransmitters

• To transmit impulses to the neuron cell body

What is the function of the myelin sheath?

• To transmit signals to other neurons

• To produce neurotransmitters

• To connect neurons to each other

• To insulate axons and speed up signal transmission

What is the nature of the synaptic signaling process?

• Purely mechanical

• Purely electrical

• Purely chemical

• Partly electrical and partly chemical

Why can't neurons undergo cell division?

• They are too large

• They lack one of the two cylindrical cellular structures

• They are too specialized

• They lack a nucleus