PYC 1501 ASSIGNMENT 1

Question 1 Answer: The correct answer is 1 To answer this question correctly you need to understand impulse conduction in the human nervous system. Human behaviour is based on impulse conduction therefore, statement A is correct. Individual differences in people’s behaviour can result from things going wrong during impulse conduction. Differences in the efficiency of impulse conduction will also result in behavioural differences. Therefore, statement B is correct. Sensory energy has to be converted into electrochemical energy in order to be conducted as a nerve impulse therefore, statement C is incorrect. Impulse conduction is the process that allows the passage of information (or communication) from the outside and inside environments to the brain, as a result statement D is correct. Statement E is also correct because impulse conduction depends on the presence or absence of neurotransmitters. Given that statements A, B, D and E are correct, option 1 is the correct answer. Question 2 Answer: The correct answer is 4 Although the strength and speed of an impulse is constant in a particular neuron, it can vary with nerve fibres of different thickness. Question 3 Answer: The correct answer is 3 The soma receives messages from other neurons through its dendrites. Question 4 Answer: The correct answer is 2 During the refractory period the membrane returns the sodium and potassium ions to their original states. At the beginning of the refractory period the neuron does not respond to any stimulus. This is called the absolute refractory period. The rest are below… This study source was downloaded by from CourseH on :39:54 GMT -05:00 This study resource was shared v