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Class Notes for Physiology at Indiana University - Bloomington

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PHSL-P 416 Lecture Notes - Lecture 34: Gastric Inhibitory Polypeptide, Bile Acid, Pancreatic Juice
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** 4 functions: digestion, secretion, absorption, motility chyme: mass of stuff being broken down & churned up in stomach size of small intestine: About size of tennis court: there are also capillaries, lacteals,...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture Notes - Lecture 33: Gastrointestinal Tract, Precancerous Condition, Gastric Glands
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Why do we have a digestive system: Like all living things we have fundamental chemical needs: o Fuels, vitamins, minerals, water: building blocks for big molecules In the end, we must look ...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture 32: immune system
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Immune system regulates itself Cells that may bind with self antigens: Go thru process called apoptosis: cell suicide Neutralized or stimulated to kill themselves Autoimmune diseases: : Ex: lupus, rheumatoid arthritis, Chr...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture Notes - Lecture 31: Dysplasia, Lymphatic System, Endothelium
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Bacteria, toxins, viruses, fungi, parasites Old blood cells, cancerous cells, precancerous cells Leukocyte: : white blood cells Hematopoietic Roles: Phagocytosis: cells eating other things Endo...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture Notes - Lecture 30: Heart Failure, Cerebral Edema, Partial Pressure
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what produces carbon dioxide? (final)diffusion from 46 to 40 out of tissus and out of interstitial fluid and out of stomach capillaries when its in blue blood, will have 46 pressure out of tissues and pu...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture Notes - Lecture 29: Endoplasmic Reticulum, Myocyte, Skeletal Muscle
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Receptory signaling characteristics How much it stimulus it takes to trigger the receptor(how sensitive it is) Receptor threshold: low=highly sensitive Potentials: (electric signals) Always de...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture Notes - Lecture 27: Receptive Aphasia, Anterograde Amnesia, Expressive Aphasia
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Wernickes area: Functions: language comprehension/understanding Understanding of words Usage of words Clinical application Expressive vs. receptive aphasia: Aphasia: language/speech disorder based on...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture Notes - Lecture 26: Postcentral Gyrus, Primary Motor Cortex, Visual Cortex
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Primary motor cortex: "somatotrophic organization": body map Motor function: initiates voluntary movement What happens when there is damage here? You will have paralysis in muscle that the nerve damage correspon...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture Notes - Lecture 25: Substantia Nigra, Basal Ganglia, Frontal Lobe
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parkinsons disease: a functional application Specific part of basal ganglia(substantia nigra: produces dopamine) begins to die So one of basal ganglia roles wont work Symptoms: Tremor: loss of inhi...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture Notes - Lecture 24: Medulla Oblongata, Myelin, Neuroglia
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Basic neuron types: Sensory: Goes towards CNS(afferent) Motor: Sends info away from CNS(efferent) Interneuron: Completely housed within CNS Glial cells: Outnumber neurons 10: 1 Support cells for neurons...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture Notes - Lecture 23: Active Transport, Electrical Synapse, Botulinum Toxin
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Synapse: : joining of 2 neurons, With action potential, communication occurs Presynaptic neuron: Prior to synapse, sends info from potential to Neuron 1 Post synaptic: Neuron after synapse, Recieves info from pre-synapti...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture Notes - Lecture 22: Muscle Contraction, Motor Neuron, Myocyte
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Recruitment: motor neuron activation Always 1st strategy used & always used in muscle contraction Voluntary sensory stimulation When recruited, Ca+ is released: crossbridge cycling occurs Orderly moto...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture Notes - Lecture 21: Rigor Mortis, Myocyte, Axon
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Muscle fiber types: Slow oxidative- slow twitch Fast oxidative- intermediate twitch Glycolytic twitch- fast twitch Fiber types are spread out evenly Rigor mortis: At death, channels are triggered: ...

Physiology
PHSL-P 416
Ronan Mark
PHSL-P 416 Lecture Notes - Lecture 18: Alpha Motor Neuron, Muscle Spindle, Proprioception
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Motor unit recruitment/ Frequency of firing: Henneman's Size principle, that motor units are recruited from small diameter to large diameter fibers. Frequency of firing is just how fast the muscle fires. This is our primar...

Physiology
PHSL-P 416
Ronan Mark

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