An experiment to test the hypothesis that acetylcholine is Loewi’s proposed vaghusstoff , using a heart (without its vagus nerve), some acetylcholine, and an acetylcholine receptor blocker. Introduction: Otto Loewi, a German physiologist, through his experiments, showed that there is some non-electrical entity that is released into the surrounding of the electrically excited heart that results in the desired action on the heart muscles. Experimental studies by Loewi opened the doors for chemical neurotransmitter studies.

Question

Want to see the full answer?

Answer 1

Question

Chapter 42.4, Problem 3EQ

Summary Introduction

To determine: An experiment to test the hypothesis that acetylcholine is Loewi’s proposed vaghusstoff, using a heart (without its vagus nerve), some acetylcholine, and an acetylcholine receptor blocker.

Introduction: Otto Loewi, a German physiologist, through his experiments, showed that there is some non-electrical entity that is released into the surrounding of the electrically excited heart that results in the desired action on the heart muscles. Experimental studies by Loewi opened the doors for chemical neurotransmitter studies.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

parasympathetic nervous system ,True or False Postganglionary neurons can stimulate the heart[ Select ]Preganglionary nerve fibers originate from the brain stem or from the sacral part of the spinal cord SantPreganglionary fibers are relatively long[ Select ]Preganglionary neuron emits acetylcholine[ Select ]Postganglionary neurons can stimulate skeletal muscle[ Select ]Postganglionary Neuron Emits Acetylcholine False

Reset Help lon channels Greater response to norepinephrine than epinephrine Found at target organ in parasympathetic pathways Can inhibit cell activity Activate CAMP Greater response to epinephrine than norepinephrine Found in sympathetic and parasympathetic pathways Affect enzyme activity Alpha receptors Beta receptors Nicotinic receptors Muscarinic receptors

Hello sir, I want to summarize this talk, thank you sir. 6- BRAIN • Neural prostheses are a series of devices that can substitute a motor, sensory or cognitive modality that might have been damaged as a result of an injury or a disease. • Neurostimulators, including deep brain stimulators, send electrical impulses to the brain in order to treat neurological and movement disorders, including Parkinson's disease, epilepsy, treatment resistant depression, and other conditions such as urinary incontinence. Rather than replacing existing neural networks to restore function, these devices often serve by disrupting the output of existing malfunctioning nerve centers to eliminate symptoms.