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