Nervous System Signal Pathways

This video explains the differences between sensory and motor terms in the nervous system. Sensory refers to signals moving towards the central nervous system, while motor refers to signals moving away. Sensory pathways and neurons are described as afferent, delivering information from sensory organs to the CNS. Motor pathways and neurons, described as efferent, carry signals from the CNS to muscles or glands. The video also uses the example of lymph nodes to explain afferent and efferent terms, highlighting their general use in biology.

What do the terms 'sensory' and 'motor' refer to in the context of the nervous system?

• Types of brain cells

• Adjectives describing signal direction

• Parts of the spinal cord

• Types of neurotransmitters

In which direction do sensory neurons transmit signals?

• Towards the central nervous system

• Towards the peripheral nervous system

• Away from the central nervous system

• Away from the peripheral nervous system

What is another term used for sensory pathways?

• Central

• Afferent

• Efferent

• Peripheral

Where do motor neurons typically transmit signals to?

• The brain

• Muscles or glands

• Sensory organs

• The spinal cord

What is another term used for motor pathways?

• Central

• Afferent

• Peripheral

• Efferent

What does the term 'afferent' mean in biological terms?

• Away from the center

• Parallel to the center

• Towards the center

• Opposite to the center

What does the term 'efferent' mean in biological terms?

• Towards the center

• Opposite to the center

• Away from the center

• Parallel to the center

In the context of lymph nodes, what is the role of an afferent vessel?

• To deliver lymph fluid to the node

• To remove lymph fluid from the node

• To circulate blood through the node

• To filter pathogens out of the lymph

In the context of lymph nodes, what is the role of an efferent vessel?

• To filter pathogens out of the lymph

• To circulate blood through the node

• To deliver lymph fluid to the node

• To remove lymph fluid from the node

How are the terms 'afferent' and 'efferent' generally used in biology?

• To indicate direction of signal or fluid flow

• To classify types of tissues

• To name different organs

• To describe types of cells