Re: How long should I spend in Buenos Aires and Santiago. I have to agree, BA is amazing, especially if you are hanging with one of the locals! It is a great city with plenty to do in the day time and even more at night. Be prepared to stay out late... I was there for 6 days and loved it.e: How long should I spend in Buenos Aires and Santiago. If I only had one month in South America, I wouldn't spend much time at all in Santiago de Chile. It can be pleasant but I didn't think it was anything special at all. Most people are very enthusiastic about BA.
Ch.5: Synaptic Activity. Introduction. 1  Otto Loewi studied the heart of the frog, which-like our own hearts-is supplied by two different peripheral nerves. 2  One, the sympathetic nerve, excites the heart and makes it beat more rapidly; the other, the vagus, shows the heart. The influx of calcium during depolarization of the endfoot appears to activate a system of microtubules within the endfoot. 2  The microtubules exert mechanical force and induce the movement of vesicles toward the presynaptic membrane. 3  The vesicles then eject neurotransmitter into the synaptic cleft.
Supplement. A biological synapse involving neurons can be: (1) Chemical synapse: the junction between neurons such that the nerve impulse is transmitted from a neuron to another neuron or to a muscle cell or gland cell.(2) Electrical synapse: the gap junction between two apposed neurons that allows faster nerve transmission.Recently, a biological synapse not involving a neuron is found to exist. The junction between a lymphocyte and an antigen-presenting cell is referred to as immunological synapse. biological synapse involving neurons can be: (1) Chemical synapse: the junction between neurons such that the nerve impulse is transmitted from a neuron to another neuron or to a muscle cell or gland cell. (2) Electrical synapse: the gap junction between two apposed neurons that allows faster nerve transmission.