9700 · topic questions
Control and coordination in mammals
11 past-paper questions on Control and coordination in mammals
During the course of an action potential, the potential difference across a neurone membrane changes. Table 10.1 shows the…
An axon membrane is described as being at its resting potential when an action potential is not occurring. Describe and explain…
Lambert-Eaton myasthenic syndrome (LEMS) is a rare disorder of the neuromuscular junction. A person with LEMS produces antibodies…
Complete Table 8.2 to show the correct order of the events that occur during muscle contraction. Two of the events have been…
Insulin is an example of a cell-signalling molecule of the endocrine system. Outline why insulin can be described as an example…
With reference to Fig. 7.1 and Fig. 7.2, describe the differences between a normal action potential and an action potential of a…
Vertebrate animals generally have a myelin sheath around the axons of motor neurones. Explain why the presence of a myelin sheath…
Contrast the two action potentials shown in Fig. 1.2 and Fig. 1.3.
Suggest how one action potential causes an action potential in an adjacent section of the axon of an unmyelinated neurone.
The rat motor neurone has an impulse transmission speed of 50ms¯¹. The snail motor neurone has an impulse transmission speed of 8…
Suggest how hypokalaemia may affect nervous coordination.
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