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6/20/2014 1 Muscle Contraction The Synapse (Anatomy) Label from image in Chapter 48

Lec 22 Muscle contraction notes - University of California ...sites.uci.edu/bio932014/files/2014/12/Muscle-contraction-notes.pdfThe Synapse (Anatomy) Label from image in Chapter 48

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Page 1: Lec 22 Muscle contraction notes - University of California ...sites.uci.edu/bio932014/files/2014/12/Muscle-contraction-notes.pdfThe Synapse (Anatomy) Label from image in Chapter 48

6/20/2014

1

Muscle Contraction

The Synapse (Anatomy)

Label from image in Chapter 48

Page 2: Lec 22 Muscle contraction notes - University of California ...sites.uci.edu/bio932014/files/2014/12/Muscle-contraction-notes.pdfThe Synapse (Anatomy) Label from image in Chapter 48

6/20/2014

2

Synaptic Transmission

Synaptic Transmission

Page 3: Lec 22 Muscle contraction notes - University of California ...sites.uci.edu/bio932014/files/2014/12/Muscle-contraction-notes.pdfThe Synapse (Anatomy) Label from image in Chapter 48

6/20/2014

3

Excitatory Post-Synaptic Potentials

(ex: glutamate opens Na+ channel)

Inhibitory Post-Synaptic Potentials

(ex: GABA opens Cl- channel)

Page 4: Lec 22 Muscle contraction notes - University of California ...sites.uci.edu/bio932014/files/2014/12/Muscle-contraction-notes.pdfThe Synapse (Anatomy) Label from image in Chapter 48

6/20/2014

4

Muscle Anatomy

Muscle Anatomy

Page 5: Lec 22 Muscle contraction notes - University of California ...sites.uci.edu/bio932014/files/2014/12/Muscle-contraction-notes.pdfThe Synapse (Anatomy) Label from image in Chapter 48

6/20/2014

5

Sliding Filament Theory

Sarcomere Contraction

Page 6: Lec 22 Muscle contraction notes - University of California ...sites.uci.edu/bio932014/files/2014/12/Muscle-contraction-notes.pdfThe Synapse (Anatomy) Label from image in Chapter 48

6/20/2014

6

Importance of Calcium

Regulation of muscle contraction

Page 7: Lec 22 Muscle contraction notes - University of California ...sites.uci.edu/bio932014/files/2014/12/Muscle-contraction-notes.pdfThe Synapse (Anatomy) Label from image in Chapter 48

6/20/2014

7

Prep for Basics Quiz

Can you do the following?

• Draw and label a synapse

• List the steps of synaptic transmission

• Compare and contrast excitatory and inhibitory

synaptic potentials

• Draw and label a neuromuscular junction

• Explain the steps in the sliding filament model of

muscle contraction

• Describe the steps of a neuromuscular action

potential causing muscle contraction