personal data i can use for a lifetime!! bi 121 lecture 11 ... · ls pp 506-11 d. peripheral...
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BI 121 Lecture 11
I. Announcements Blood Chem Lab today! Fun day!!Personal data!!! If you haven't already done so, please review Lab 5 in LM & in e-mail. Thanks sincerely!Lab Manual & Exam I remaining returns. Q from last t?
II. Safety & Techniques Review for Blood Chem Lab Q?
III. Endocrine ConnectionsA. Hypothalamus-Anterior pituitary intimate circulationB. Anterior pituitary hormones DC pp 105-7, LS pp 502-6C. GH: Body builder's dream? Fountain of youth?
LS pp 506-11D. Peripheral endocrine organs
DC pp 109-13, LS pp 513-361. Pancreas (insulin – glucagon see-saw!)2. Thyroid3. Adrenals
IV. Introduction to the Nervous System LS ch 5, DC Module 9
Personal data I can use for a lifetime!!
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No food, drink or gum in lab today! Thanks sincerely!
…Healthy, tasty & fresh, but not in lab!!
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WASH & DRY
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ALCOHOL
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OBTAIN μSAMPLE
BLOOD GLUCOSE
BLOOD TYPING
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Normal: 70-99Pre-Diabetes: 100-125Diabetes: ≥ 126 mg/dL
Glucose: Sugar in Blood
NB: Read
& Record!
https://doihaveprediabetes.org/
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ADD ANTISERA
MIX W/TOOTHPICKS
READ & RECORD!!
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3
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10 Q? Clumping in Any Wells?
Here?
Here?
Type AB+
Source: S Wong, BI 121 Lab, 2016
Here?
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1
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REWASH!!
3FOLD DIAPER
BLOOD PRODUCTS
2
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Blood Chem Lab Q?
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Capillary-Venule-Capillary Intimate Circulation
Krieger & Hughes 1980
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Krieger & Hughes 1980
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SI Fox 2008cf: LS 2012 fig 17-5
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LS 1991
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LS 2006, cf: LS 2012
fig 17-10
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LS 2012 fig 17-11
Progression & Development of Acromegaly
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Growth Hormone =
Somatotrophic Hormone
Body Builder’s Dream?
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GH/STH Effects: InsulinResistance/Type II Diabetes?
Amino Acid uptake & Protein synthesis
Lipolysis & Fatty Acid mobilization
Glucose uptake
(skeletal muscle & adipocytes)
Glucose production
(liver glycogenolysis)
Insulin secretion
Mismatch!!
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Increase GH naturally with exercise & sleep!!
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Endocrine Pancreas: Insulin (I) & Glucagon (G)
See-Saw Hormones in Regulating Blood Glucose
I G
I
GI
G
LS 2007
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DC 2003
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DC 2003
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DC 2003
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LS
20
12
fig
17-1
6
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LS 2012 fig 17-17
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Guyton & Hall 2000
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DC 2003
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LS 2012 fig 17-18
Adrenals/Suprarenals
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Stress Promotes Cortisol Secretion
LS 2012 fig 17-19
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Epinephrine
80%
Norepinephrine
20%
BI 121!!
Guyton & Hall 2000
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Questions + Discussion
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Nervous System
input
output
CNS PNS
C
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LS 2012 fig 5-1
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LS 2012 fig 5-2
~99% of all neurons in humans!CNS ~100 billion interneurons!!
1
2
3
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Astrocytes
~ 90% of Cells w/in CNS are not neurons but glial cells ≡ neuroglia or nerve glue!
LS2 2006 fig 5-4 p 112
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Neuron 1
InputDendrites ≡ Antennae
ControllerSoma ≡ NCB
OutputAxon
Neuron 2
Neuron 3
H. Howard 1980
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D Chiras 2003
A single nerve cell may have as many as 200,000 inputs!
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Courtesy Fengquan ZhouUNC Chapel Hill
Nerve cell with multiple axons grown by adding a mitogen/neurogen ≡ nerve growth factor!
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Guyton & Hall 2011
Sensory nerves especially, come in all shapes & sizes!
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A = Large to medium myelinated, up to 120 m/sec
C = Small unmyelinated, 0.25 m/sec
Nerve Extremes: Far endsof the Continuum
α,β, γ, δ IV
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What is myelin? Why is it important?
Lipid insulative coat↑ v, conserves ions & ATP
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A large myelinated "survival" nerve can conduct impulses the length of football field in < 1 second!
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Saltatory/Leaping Conduction!Crucial Sensory & Motor Nerves
L. saltare to hop or leap! Fr. salt, sautier, sauté, leap, high air, vault
DC 2003