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Check out all the Lessons and MiniLectures Below!
Lessons:
Lesson 1: Introduction to the Case & Gross Brain Anatomy
Meet Russell Johnson, a 70-year-old man whose tremors, rigidity, and balance problems tell a story about his brain. In this opening session, you’ll explore the macroscopic structures that control movement—from the motor cortex to the mysterious basal nucleiClusters of neurons in the brain that help regulate movement and coordination. deepAway from the surface of the body. within the cerebrumThe largest part of the brain, responsible for thought, memory, and voluntary movements.. You’ll discover why Parkinson’s disease specifically attacks movementA fundamental property of life involving motion of the body or its parts. while leaving other functions intact. By the end, you’ll understand the TRAP acronym and be able to trace the motor control circuit that’s failing in Russell’s brain.
Key Concepts:
- Motor control involves multiple brain regions working together
- The basal nucleiClusters of neurons in the CNS responsible for processing information. initiate and regulate movement without directly connecting to muscles
- Gray matter structures (nuclei) and their spatial relationships determine function
Minilectures:
6 minutes – Required Pre-Lecture
7 minutes – Required Pre-Lecture
6 minutes – Recommended Post-Lecture
6 minutes – Recommended Post-Lecture
Lesson 2: Microscopic Anatomy & Pathophysiology
Zoom in to see what’s really happening in Russell’s brain at the cellular level. Using virtual microscopy, you’ll examine the substantia nigra—a dark, pigmented region in the midbrainThe upper portion of the brainstem involved in visual and auditory processing. where dopamine-producing neuronsThe functional cells of the nervous system that transmit signals. are dying by the thousands. Compare normal brain tissue with Parkinson’s pathology, counting the devastating neuronal loss that causes Russell’s symptomsSubjective experiences reported by the patient (e.g., nausea, fatigue).. Then trace the nigrostriatal dopamineA catecholamine neurotransmitter involved in motor control, motivation, and reward. pathway to discover exactly how the loss of these microscopic neurons creates the tremors, rigidity, and bradykinesia that define this disease.
Key Concepts:
- The nigrostriatal pathway is the primary circuit affected in Parkinson’s
- 50-70% neuronal loss occurs before Parkinson’s symptoms appear
- The nigrostriatal pathway is the primary circuit affected in Parkinson’s
Minilectures:
6 minutes – Required Pre-Lecture
9 minutes – Required Pre-Lecture
6 minutes – Recommended Post-Lecture
Neurotransmitters and Synapses
Variable – Recommended Post-Lecture
Lesson 3: White Matter Tracts & Neural Circuits
Follow the information superhighways of the brain as you explore the white matterThe outer portion of the spinal cord made of myelinated nerve fibers that transmit signals. connections that link motor control centers together. Learn how projection tractsNerve pathways connecting the cerebrum to lower brain structures and the spinal cord. carry commands from cortex to muscles, how the corpus callosumThe large bundle of nerve fibers connecting the two cerebral hemispheres. coordinates Russell’s bilateral tremors, and how association tractsNerve pathways connecting different areas within the same hemisphere. integrate planning with execution. Through histology and 3D pathway mapping, you’ll see how Parkinson’s disrupts not just individual structures but entire neural circuits. Discover why Russell has movement problems but not paralysis, and how damaged circuits can send the wrong signals while the “wires” themselves remain intact.
Key Concepts:
- Motor circuits involve serial connections through multiple structures
- Myelin creates white matter and enables rapid signal transmission
- Three types of white matter tractsBundles of nerve fibers in the CNS that carry signals between brain regions. serve distinct functions
Lesson 4: Pharmacology & Beyond the Motor System
Unlock the molecular mystery of Russell’s medications and discover why he can’t simply take a dopamine pill. Explore the blood-brain barrierA selective barrier that prevents harmful substances from entering the brain. at the microscopic level, learning why Levodopa works when dopamine doesn’t, and how different drugs manipulate the synapseThe junction between two neurons where communication occurs. in distinct ways. Then venture beyond motor symptoms to explore Russell’s puzzling inability to feel thirsty or sweat—revealing how Parkinson’s affects the hypothalamusA small but vital brain region controlling hormones, temperature, and autonomic functions. and autonomic nervous systemThe part of the peripheral nervous system that controls involuntary functions such as heart rate, di. By session’s end, you’ll understand the elegant problem-solving behind modern Parkinson’s treatment and why these drugs eventually lose their effectiveness as the disease progresses.
Key Concepts:
- The blood-brain barrier is both protector and obstacle –
- Different Parkinson’s drugs work at different points in the dopamine system
- Circumventricular organs allow the hypothalamus to sense blood chemistry
Minilectures:
6 minutes – Required Pre-Lecture
5 minutes – Required Pre-Lecture
5 minutes – Required Pre-Lecture
6 minutes – Recommended Post-Lecture
By the End of the Module You Will be Able to:
- Name the major brain regions, vesicles, and ventricles, and describe the locations and functions of each.
- Explain how the brain is protected and supported, and discuss the formation, circulation, and function of cerebrospinal fluid(CSF) – A fluid that cushions and nourishes the brain and spinal cord..
- Describe the anatomical differences between the medulla oblongataThe lowest part of the brainstem controlling vital functions like breathing and heart rate. and the spinal cordThe central nervous system structure that relays signals between the brain and body.. Identify the main components and functions of the medulla oblongata.
- List the main components of the ponsA part of the brainstem that connects the cerebrum to the cerebellum and helps regulate breathing., and specify the functions of each.
- List the main components of the cerebellumThe brain region responsible for balance, coordination, and fine motor control., and specify the functions of each.
- List the main components of the midbrain, and specify the functions of each.
- List the main components of the diencephalonA brain region that includes the thalamus, hypothalamus, and epithalamus., and specify the functions of each.
- Identify the main components of the limbic systemA group of brain structures responsible for emotions and memory., and specify the locations and functions of each.
- Identify the major anatomical subdivisions and functions of the cerebrum. Discuss the origin and significance of the major types of brain waves seen in an electroencephalogram.
- Describe representative examples of cranial reflexesAutomatic responses to stimuli. that produce somatic responses or visceral responses to specific stimuliChanges in the environment that are detected by sensory receptors..
List of terms
- basal nuclei
- deep
- cerebrum
- movement
- nuclei
- midbrain
- neurons
- symptoms
- dopamine
- white matter
- projection tracts
- corpus callosum
- association tracts
- tracts
- blood-brain barrier
- synapse
- hypothalamus
- autonomic nervous system
- cerebrospinal fluid
- medulla oblongata
- spinal cord
- pons
- cerebellum
- diencephalon
- limbic system
- reflexes
- stimuli