1. Predict the effect of hypothermia and dehydration (low bloodflow) on release of neurotransmitter (ACh) on the muscle fiber?
(Think about the relationship of aerobic mechanism, ATP,mitochondria, exocytosis, active and transport)
a. more ACh releases
b. less ACh release
c. same amount of ACh releaes
d. none of the choices
2. Acetylcholine is released from a neuron /
a. Through exocytosis when a vesicle fuses with themembrane.
b. by rapid diffusion when a voltage-gated ion channel opens forit.
c. by conduction through a gap junction from nerve tomuscle.
d. by a primary active transport pump.
3. Predict what will happen if most of the ACh-esterase wereremoved from synaptic cleft: less Ach will be available
a. More ACh will be available
b. Less ACh will be available
c. There will be more Na/K pump activity
d. There will be less Na/K pump activity
4. The sodium-potassium pump moves/
a. sodium into the cell and potassium out of the cell
b.sodium out of the cell and potassium into the cell
c. sodium and potassium into the cell
d. sodium and potassium out of the cell
