Compare nervous and hormonal control, limited to speed of action and duration of effect
1 Answer Explain accommodation to view near and distant objects in terms of the contraction and relaxation of the ciliary muscles, tension in the suspensory ligaments, shape of the lens and refraction of light
1 Answer Explain the pupil reflex in terms of light intensity and antagonistic action of circular and radial muscles in the iris
1 Answer Identify, on a diagram, the structures of the eye, limited to: cornea, iris, pupil, lens, ciliary muscles, suspensory ligaments, retina, fovea, optic nerve and blind spot
1 Answer
1 Answer Describe the events at a synapse: (a) an impulse stimulates the release of neurotransmitter molecules from vesicles into the synaptic gap (b) the neurotransmitter molecules diffuse across the gap and bind with receptor proteins (c) an impulse is stimulated in the next neurone
1 Answer
1 Answer State that electrical impulses travel along neurones
1 Answer Identify, on diagrams, sensory, relay and motor neurones
1 Answer
1 Answer
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