Chapter 9 Muscle Review

Distance training activities involve stimulating deveolpment of ___

A motor unit consist of ___.

What is oxygen debt?

What are 5 signs of aging in the muscular system?

Bones and muscles function as mechanical devices called __.

Smooth muscle contraction is stimulated by what 2 neurotransmitters?

Which type of muscles have strations

Which type of muscle contracts as a unit (syncytium), excites itself, and is found only in the heart>

Strength trainging like lifting weights stimulates ___.

Put the following steps in order.

1. Myosin heads bond to exposed active sites on actin, forming cross-bridges

2. the muscle impulse reachers the sarcoplasmic reticulum and calcium is released

3. thin filaments are pulled over the thick filaments

4. calcium floods the sarcoplasm and binds to troponin leaving active sites exposed.

5. the impulse arrives at the synapse and travels through the transverse tubules

6. the muscle fiber shortens and contracts.