Lecture
17: Muscle Physiology - Invertebrate muscles
Sherwood- Chapter 8
Objective: Many invertebrate muscles are smooth.
1. Molluscan catch muscle
a. remains contracted
without fatigue and little oxygen consumption
b. cross-bridge
release responds to relaxing nerve impulses and serotonin
2. Crustacean muscle
a. gross arrangement
is pinnate instead of parallel to the direction of pull
b. multiple innervation
of a single muscle cell
3. Insect flight muscle
a. synchronous
muscles
b. asynchronous
muscles
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