Chapter 12 Flashcards
1
Q
One sarcomere is defined as the area between 2 adjacent
A
z discs
2
Q
When the muscle is at rest, where is the concentration of calcium
A
Sarcoplasmic reticulum
3
Q
Motor units are recruited from largest to smallest
A
False
4
Q
What channel is mechanically gated in the muscle cell
A
Ryanodine
5
Q
Muscle sense ______ and Golgi tendon organs sense _____
A
Length, tension
6
Q
ATP is broken down into ADP + Pi what happens
A
- Tight Binding between actin and myosin
- ATP binds to myosin head
- Myosin head breaks down
- Released energy causing the head to be cocked
- Pi is released
- ADP is released
7
Q
What causes the myosin head to be cocked
A
ATP is broken down into ADP + Pi
8
Q
Identify the different parts of the neuromuscular junction
A
- Pre-synaptic neuron
- Synaptic Cleft
- Acetylcholine receptors
- Voltage gated Na+ channels
- T-tubule
