Somatic NS Flashcards
1
Q
Where is each muscle fiber controlled?
A
as a single motor end plate
2
Q
What is the neurotransmitter at all neuromuscular junctions?
A
ACh
3
Q
What does ACh release cause in the muscle fiber?
A
causes depolarisation of the motor end plate, which leads to muscle contraction
4
Q
What is the process leading to contraction called?
A
excitation-contraction coupling
5
Q
What is a motor unit?
A
a group of muscle fibers that is supplied by a number of somatic motor neurons
6
Q
What does the size of a motor unit indicate?
A
degree of fine control
- very fine control = very small motor units
- no fine control needed = large motor units
7
Q
How are muscle cells/fibers from different motor units arranged?
A
intermingled within the muscle group
