PS102 Lecture Notes - Parasympathetic Nervous System, Autonomic Nervous System, Transcranial Magnetic Stimulation
Document Summary
Why is the presence of a semipermeable membrane essential for a neuron to fire? (1 point) Because the semipermeable membrane is responsible for receiving chemical messages from other neurons. Because the openings on the membrane allow differently charged ions to flow in and out of the neuron. Because only a semipermeable membrane will support the hydrophilic environment that is needed for a neuron to survive. Because myelin cannot cling to a non-permeable membrane. Immediate, life-saving reflexes occur so rapidly because they do not involve all parts of the nervous system. Which of the following, specifically, is not included in this type of reflexive action? (1 point) What is the primary difference between neurotransmitters and hormones? (1 point) Hormones are released directly into the bloodstream, while neurotransmitters are kept between neurons. Neurotransmitters are released directly into the bloodstream, while hormones are kept between neurons. Lesioning studies are often used to study the relative function of specific brain parts.
