Provide short answers (1 short sentence or bullet points) to the following quest

Question

Provide short answers (1 short sentence or bullet points) to the following questions to demonstrate your understanding of the practical content. Q1. (1.0 Marks) In the reaction time experiment that you did last week describe how the apparatus that you used allowed you to calculate the time between the stimulus being applied and when the subject felt it. E.g The time that the tendon hammer was applied to the subject was recorded as a spike on the data analysis system and then...." Q2. (3 Marks) a) In the knee jerk reflex response how many neurones are involved in this monosynaptic reflex arc? AND b) correctly classify (name) the types of neurones involved? AND c) what is the name of the specialised muscle fibre involved in detecting the muscle stretch? Note: consider only innervation associated with the quadriceps muscle and the major neurones involved. Q3. Mark) If an axon had a conduction velocity of 115 m/sec what two structural features would it have if it was viewed using a transmission electron microscope? Q4. (1 mark) If an axon had a conduction velocity of 115 m/s how long would it take for an action potential to travel along this axon if it was 1520 mm long? Show your calculation.

Explanation / Answer

1.When a human subject follows instructions to make a specific response as soon as he can after the presentation of a specific signal, the latency of the response is called reaction time (RT).

2.a.Two neurons .

b. sensory and motor.

c.Spindle fibers.

3. Conduction velocity increases with both axon diameter, and with myelination

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