1. Finish Readings in Ch 7 Sensory Physiology
Start Reading Ch 9 Muscle Physiology
What’s going on? And what you gonna do about it? Sensory Physiology and Muscle Physiology

2. Different types of muscles for different tasks!
Characteristics: Location, cell shape, nuclei per cell, innervation, connections to adjacent myofibers, arrangement of actin and myosin, regulation of cross bridges, sources of Ca++, response to injury, twitch duration, etc.
S 1
09.01.jpg
Different types of muscles for different tasks!

3. S 2

4. NMJ = neuromuscular junction Myoneural junction Motor end plate S 3
Fig
Synonyms:
NMJ = neuromuscular junction
Myoneural junction
Motor end plate
S 3
09.14.jpg

5. Fig
S 4
1 AP in motor axon releases sufficient ACh for 1 AP in skeletal muscle.
09.15.jpg
Nicotinic
EPP
Myasthenia gravis and loss of nAChRs

6. S 5 Capillaries Oxygen, Nutrients, hormones, waste 09.01a.jpg
Fig a
Capillaries
Oxygen,
Nutrients, hormones,
waste
09.01a.jpg

7. Terms: Myofiber, myofibril, myofilament
Fig b
Terms: Myofiber, myofibril, myofilament
09.11b.jpg
Thick myofilament = myosin Thin myofilament = actin

8. Fig a
S 7
09.11a.jpg

9. Fig
S 8
High fAP leads to accumulation of Ca++ in sarcoplasm because Ca++ ATPase doesn’t return all Ca++ to SR quickly enough.
The concentration of free calcium is directly related to force of contraction in skeletal muscle
Thus we need to understand the cellular mechanism of contraction… cell biology flashbacks…
09.12.jpg

10. Fig
S 4
High fAP leads to accumulation of Ca++ in sarcoplasm because Ca++ ATPase doesn’t return all Ca++ to SR quickly enough.
The concentration of free calcium is directly related to force of contraction in skeletal muscle
Thus we need to understand the cellular mechanism of contraction… cell biology flashbacks…
09.12.jpg