Nervous System

Name: Nervous System
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Human Nervous System

Created byKomal Nikumbh- Mahajan

Last updated 4/2021

English

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What you'll learn

• Describe the structure and function of the different neural systems including the autonomic, peripheral, somatosensory, motor, visual, auditory, neuro-endocrine, limbic and olfactory systems.
• Describe and give examples of neurological diseases arising from dysfunction or degeneration of brain regions and pathways studied
• In this course will learn about the brain and spinal cord, and how the peripheral nervous system consists of the nerves that extend to all the other organs in the body.

Course content

3 sections • 25 lectures • 1h 25m total length

Introduction of Nervous System1:46
Explore how the nervous system maintains homeostasis with the endocrine system, using electrical signals for fast responses and hormones for slower effects, via sensory input, integration, and motor output.
Affrent & effrent nerves2:08
Explore afferent and efferent neurons in the nervous system, detailing how afferent neurons carry sensory impulses toward the CNS and efferent neurons carry signals away from the CNS.
Organization of Nervous System0:59
Explore the organization of the nervous system, highlighting the central nervous system with brain and spinal cord, and the sympathetic and parasympathetic nervous systems.
Nerve Tissue0:59
Examine nerve tissue in the nervous system, including the central and peripheral nervous systems. Learn that neurons transmit electrical signals and study the supporting tissue surrounding them.
Neuron8:45
Explore the neuron’s structure and function, from the soma with nucleus and organelles to dendrites and axons, and how myelination and action potentials enable signaling at synapses.
Neuroglia3:58
Explore neuroglia, including astrocytes, microglia, and oligodendrocytes, and how they support neurons, regulate the chemical environment, and form the myelin sheath around CNS axons.
Classification & properties of nerve fibre1:58
The lecture classifies nerve fibers into A, B, and C by their properties and speed of conduction, detailing size (microns) and how conduction velocity varies with fiber type.
Electrophysiology0:37
Explore electrophysiology, the study of the electrical properties of biological systems, and learn how researchers measure the electrical activity of neurons during action potentials.
Action Potential5:43
Explore the action potential by examining resting membrane potential, depolarization, repolarization, and hyperpolarization, plus the roles of sodium and potassium ions and channels in neural signaling.
Nerve Impulses2:06
Explore how nerve impulses trigger depolarization and calcium influx, prompting vesicle release of neurotransmitters into the synaptic cleft. Learn how transmitter binding to receptors generates excitatory and inhibitory synaptic potentials.
Receptor1:38
Explore receptors as binding sites on membranes or inside cells that recognize signal molecules and initiate cellular responses, using the lock-and-key analogy to illustrate specificity.
Synapses2:19
Explore how synapses transmit nerve impulses through synaptic vesicles releasing neurotransmitters, signaling receptors on the second neuron and propagating neural communication.
Neurotransmitter0:50
Explore how neurotransmitters, the chemicals of neuronal communication, are classified chemically, act like a key, and drive depolarization with excitatory transmitters like glutamate while GABA causes hyperpolarization.

Meninges of Brain & Spinal cord3:29
Explore the central nervous system, including the brain and spinal cord, and the meninges dura mater, arachnoid mater, and pia mater that cushion and nourish neural tissue.
Ventricles of Brain3:00
Explore the brain's ventricular system, focusing on the lateral ventricles and their connection to the third ventricle, and how cerebrospinal fluid is produced and circulated.
Cerebrospinal Fluid6:42
Cerebrospinal fluid is a clear fluid produced by the choroid plexus, cushions the brain and spinal cord, circulates through ventricles and subarachnoid space, and supports homeostasis and cerebral blood flow.
Structure & function of Brain1:08
Explore the structure and function of the brain, from the brainstem and medulla connected to the spinal cord, to the cerebellum and cerebrum, with notes on the hypothalamus.
Cerebrum7:32
Explore the cerebrum, its cortex and white matter, and how the hemispheres communicate via the Corpus callosum. Learn about the lobes, gyri and sulci, and language areas like Broca's area.
Medulla, Pons, Cerebellum1:33
Explore how the medulla, pons, and cerebellum coordinate respiration and motor control, with the cerebellum integrating input from muscles and joints about body position to refine movements and support learning.
Spinal cord3:08
Examine the spinal cord’s structure and pathways, detailing its butterfly-shaped gray matter, white matter columns, and ascending and descending tracts that relay sensory input and motor signals.

Introduction & functions of ANS3:21
Explore autonomic nervous system within the context of the central and peripheral nervous systems, and its involuntary sympathetic and parasympathetic divisions regulating heart, respiratory system, gastrointestinal tract, bladder, and eyes.
Symparhetic & Parasympathetic Nervous System11:07
Explore the autonomic nervous system’s sympathetic and parasympathetic roles in fight-or-flight and rest-and-digest responses, including eye dilation, salivation, bronchial changes, heart rate, and GI activity.
Peripheral Nervous System1:30
Explore the peripheral nervous system, focusing on voluntary fibers connecting skin and skeletal muscle, and note nerves near the perineum and viscera.
Cranial nerves6:09
Explore the cranial nerves, including the optic nerve, trigeminal nerve with its mastication branches, the facial nerve for expression, and the vestibulocochlear nerve, covering sensory, motor, and autonomic functions.
Spinal nerves3:01
Explore how spinal nerves form regional plexuses, notably the cervical and brachial plexuses, to innervate limb muscles and skin, including the median nerve and intercostal nerves and carpal tunnel syndrome.

Requirements

Basic Biology

Description

· This module will provide a detailed understanding of the structure and function of the nervous system.

· This anatomy course teaches you about the central and peripheral human nervous systems.

· In this course will learn about the brain and spinal cord, and how the peripheral nervous system consists of the nerves that extend to all the other organs in the body.

· Starting with nervous system development and then focusing on the adult nervous system, students will learn about the gross anatomy of the human brain and spinal cord and its constituent systems including autonomic, sensory, visual, auditory, somatosensory, and olfactory and limbic systems. Lectures will also be given about the vasculature, ventricles and CSF.

Neurons (specialized cells of the nervous system ) send signals along thin fibers called axons and communicate with other cells by releasing chemicals called neurotransmitters at cell-cell junctions called synapses.
Glial cells are non-neuronal cells that provide support and nutrition in the nervous system.
In humans, the nervous system consists of both the central and peripheral nervous systems.
The human central nervous system contains the brain, spinal cord, and retina.

The peripheral nervous system consists of sensory neurons, clusters of neurons called ganglia, and nerves connecting them to each other and to the central nervous system

Who this course is for:

HSC, Pharmacy, Nursing

Nervous System

What you'll learn

Explore related topics

Course content

Nervous system13 lectures • 34min

Cental Nervous System7 lectures • 27min

Autonomic Nervous System5 lectures • 25min

Requirements

Description

Who this course is for: