Ch 5: Nerves & the Senses
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- Test your understanding of each lesson with short quizzes.
- Verify you're ready by completing the Nerves and the Senses chapter exam.
Why It Works:
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Students Will Review:
This chapter helps students review the concepts in a nerves and the senses unit of a standard science course. Topics covered include:
- How the cranial nerves are involved in motion and sensation of the face and mouth
- The function of the vagus nerve
- Mechanisms of receptors in sensation
- How messages are transmitted from receptors to the brain to create sensations
- Types of pain and how they are transmitted and treated
- Types, functions and components of sensory nerves
- How the optic nerve takes information from the receptors of the eye to the brain to enable vision
- The tiny components of the inner ear and how they work with the auditory nerve to enable hearing
1. Cranial Nerves of the Face and Mouth: Motion and Sensation Functionality
Cranial nerves in the face and mouth control necessary functions related to facial expression & sensation, speaking, chewing, swallowing, and taste sensation. Learn about the cranial nerves of the face and mouth, the motion and sensation functions of each nerve, and how to recall the function and name of each cranial nerve.
2. Cranial Nerves: The Vagus Nerve and its Functionality
The vagus nerve is one of the 12 cranial nerves and serves an important function related to the heart, lungs, and digestive tract. Explore the functionality of the vagus nerve, or cranial nerve X, its influence on the heart rate and digestive process.
3. Receptor Processes & Sensory Mechanisms
Receptor processes and sensory mechanisms allow us to process the world around us. Learn about sensory information, explore perception and sensation, and discover how receptor processes work.
4. Sensory Coding: Getting Messages from Receptors to Your Brain
Sensory coding involves sensory receptors that get information from the world, a person's cells, and parts of the brain. Explore how messages travel from receptors to the brain and learn about sensory information, reception, coding, and transmission.
5. Pain: Types, Mechanisms, and Treatment
Pain is a sensation that the body feels when it is damaged or exposed to harmful stimuli. Learn about the mechanisms of pain and nociception, the different types of noxious stimuli, the pain's pathway in the body, and other types of pain.
6. Sensory Nerves: Types and Functions of Sensors and Receptors
Sensory nerves include different types of sensors and receptors with various functions. Explore differences in sensation, and learn about exteroceptors and mechanoreceptors, Pacinian and Meissner's corpuscles, Ruffini nerve endings, and Krause's end organs.
7. How Receptors of the Eye Conduct Information via the Optic Nerve
The receptors of the eye conduct information by catching light particles and converting the information into electrical signals that the brain can process into an image. Learn about photoreceptors, photopsin, rhodopsin, and the optic nerve.
8. The Sense of Sight: Motion, Nerves and Eye Movements
The light entering the eyes enables the body's sense of sight to perceive motion and images through the processes in the optic nerves and the brain. Learn about the concepts of the sense of sight, the different nerves involved in seeing, and how eye movements are affected by the nerves.
9. The Ear: Hair Cells, Organ of Corti & the Auditory Nerve
The ear utilizes hair cells on its surfaces to catch sounds that are then sent to the auditory nerve, which in turn sends signals to the brain for interpretation of the sound that was heard in an instant. Learn about the structures and functions of the ears, such as the Organ of Corti, the hair cells of the inner ear, and how the auditory nerves process the signals to the brain.
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