Answer the following and provide a brief/short explanation of each:
A. Draw a simple diagram to show the neural circuit responsible for the observation that shining a light into your left eye results in constriction of the ipsilateral pupil. Be sure to include and label the following neurone types: interneurone, parasympathetic preganglionic neurone, parasympathetic postganglionic neurone, and sensory neurone.
B. If an axon had a conduction velocity of 115 m.sec-1, what 2 structural features would it have if it was viewed using a transmission electron microscope?
C. If an axon had a conduction velocity of 115 m.sec-1, how long would it take for an action potential to travel along this axon if it was 1520 mm long? Show working.
D. i) How many neurones are involved in a knee jerk reflex response at this monosynaptic reflex arc?
ii) Name the types of neurones involved at (i).
iii) What is the name of the specialised muscle fibre involved in detecting the muscle stretch? Hint: Only consider innervation associated with the quadriceps muscle and the major neurones involved in the process.
Answer the following and provide a brief/short explanation of each:
A. Draw a simple diagram to show the neural circuit responsible for the observation that shining a light into your left eye results in constriction of the ipsilateral pupil. Be sure to include and label the following neurone types: interneurone, parasympathetic preganglionic neurone, parasympathetic postganglionic neurone, and sensory neurone.
B. If an axon had a conduction velocity of 115 m.sec-1, what 2 structural features would it have if it was viewed using a transmission electron microscope?
C. If an axon had a conduction velocity of 115 m.sec-1, how long would it take for an action potential to travel along this axon if it was 1520 mm long? Show working.
D. i) How many neurones are involved in a knee jerk reflex response at this monosynaptic reflex arc?
ii) Name the types of neurones involved at (i).
iii) What is the name of the specialised muscle fibre involved in detecting the muscle stretch? Hint: Only consider innervation associated with the quadriceps muscle and the major neurones involved in the process.
