A Series of Critical Experiments Showed the Properties of Chemical

question 41

Essay

A series of critical experiments showed the properties of chemical synaptic transmission at the neuromuscular junction. One of these is shown in Figure Q3-1 in which the voltage across the membrane was recorded with an intracellular electrode. Figure Q3-1
A. What happened when the motor axon was stimulated?
B. The investigators then applied ACh to the muscle via iontophoresis in the presence of TTX. Why did they use TTX?
C. The elicited response of ACh iontophoresis was similar to nerve stimulation. What did this tell the investigators?

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Definitions:

Oxygen Tanks

Containers used to store oxygen for medical purposes, enabling patients with respiratory issues to receive the oxygen they need.

Pulse Oximetry

A non-invasive test that measures the oxygen saturation level, or the amount of oxygen in the patient's blood, by attaching a sensor to a part of the body, often a fingertip.

Pneumonia

An inflammatory condition of the lung affecting primarily the small air sacs known as alveoli, usually caused by infectious agents such as bacteria, viruses, or fungi.

Oxygenation

The process of supplying, adding, or replacing oxygen in the body, typically referring to the oxygenation of blood in the respiratory system.