Nervous System

Includes lecture videos describing action potentials, graded potential, the neuromuscular junction, autonomic nervous system, the brain, and reflexes.


Neuromuscular junction and muscle contraction

This video describes the events that occur from an action potential in a motor neuron to an action potential and contraction in a muscle cell. Time stamps Overview Neuron action potential to muscle action potential (animations) 0:14  Quick review of muscle structures 1:07  Details of a muscle cell 1:40  Neuromuscular junction 3:51  Breakdown of …

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touch and pain

Touch, Temperature, Pain

How touch, temperature and pain information is sent to the CNS and includes pain medications and referred pain. Time stamps Sensory pathway 0:20 Tactile receptors 0:52 Sensory neurons and receptor cells  4:20 Slowly and rapidly adapting receptors 8:06 Receptive fields 10:44 Sensory cortex 12:14 Anterolateral and dorsal-medial tracts 14:50 Pain 18:18 Analgesics 20:45 Referred …

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autonomic nervous system

Autonomic Nervous System

Structure of the autonomic nervous system neurons, functions of the sympathetic and parasympathetic systems and the neurotransmitters released from each. Time Stamps ANS divisions 0:09  Types of stress 0:40  Somatic neurons and ANS neurons 2:54  Chart comparing somatic and ANS 9:23  Origin of sympathetic and parasympathetic neurons in spinal cord 9:30  Comparison of effects of …

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the brain

The Brain

This video describes the main function of various parts of the brain including the thalamus, brainstem, subcortical regions, limbic system, and cerebral cortex. Time Stamps The Brain  Protective mechanisms – blood-brain barrier and meninges 0:09  Outline of brain structures covered 5:55  Thalamus, hypothalamus, pineal gland 6:32  Brainstem – midbrain, pons, medulla oblongata 10:12  Subcortical …

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spinal cord

The Spinal Cord and Reflexes

Time Stamps Sending signals to and from the brain through the spinal cord 0:09  Structure of the spinal cord 1:49  Grey matter and white matter 4:16  Detailed spinal cord cross section 5:26  Reflexes 12:41  Monosynaptic 13:12  Polysynaptic 15:43  Download Worksheet Worksheet Answers Images from my Textbook: Human Biology, Anatomy and Physiology for the health Sciences  …

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neurotransmitters and drugs


How various neurotransmitters have a stimulating or inhibitory effect, how they impact pain, or mood, stress response, pain, mental energy, as well as how various drugs affect different neurotransmitters or their receptors. Time Stamps Neurotransmitters and Drugs  Review of neurotransmitters released from the synapse 0:13  Acetylcholine, dopamine, endorphins 3:10  Glutamate, Epinephrine/ norepinephrine, GABA/ glycine, …

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action potentials graded potentials

Action Potentials/ Synapse/ Graded Potentials

This video describes the steps of an action potential, refractory periods, and how they compare with graded potentials, as well as events at the synapse. Time Stamps Action Potentials, the synapse, graded potentials  Ion concentrations around cells 0:15  Polarization 4:07  Voltage-gated and chemically-gated ion channels 4:40  Pre and postsynaptic neurons 6:14  Action potentials 8:05  …

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Nervous System Overview

This video describes the divisions of the nervous system types of neurons and glial cells in the central and peripheral nervous system. Time Stamps Overview of the Nervous System 0:09   Key terms 0:25   Divisions of the nervous system 2:03   Neuron structure of somatic vs autonomic nervous system 5:57   Functions of the nervous system 10:04   …

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