A.3 - Perception of stimuli
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3.2
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9.3
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Assessment statements
| DCS Topic Code | Statement | Guidance |
| A.3.A1 | Red-green colour-blindness as a variant of normal trichromatic vision. | |
| A.3.A2 | Detection of chemicals in the air by the many different olfactory receptors. | |
| A.3.A3 | Use of cochlear implants in deaf patients. | |
| A.3.S1 | Labelling a diagram of the structure of the human eye. | Diagram of human eye should include the sclera, cornea, conjunctiva, eyelid, choroid, aqueous humour, pupil, lens, iris, vitreous humour, retina, fovea, optic nerve and blind spot. |
| A.3.S2 | Annotation of a diagram of the retina to show the cell types and the direction in which light moves. | Diagram of retina should include rod and cone cells, bipolar neurons and ganglion cells. |
| A.3.S3 | Labelling a diagram of the structure of the human ear. | Diagram of ear should include pinna, eardrum, bones of the middle ear, oval window, round window, semicircular canals, auditory nerve and cochlea. |
| A.3.U1 | Receptors detect changes in the environment. | Humans’ sensory receptors should include mechanoreceptors, chemoreceptors, thermoreceptors and photoreceptors. |
| A.3.U10 | Hair cells in the semicircular canals detect movement of the head. | |
| A.3.U2 | Rods and cones are photoreceptors located in the retina. | |
| A.3.U3 | Rods and cones differ in their sensitivities to light intensities and wavelengths. | |
| A.3.U4 | Bipolar cells send the impulses from rods and cones to ganglion cells. | |
| A.3.U5 | Ganglion cells send messages to the brain via the optic nerve. | |
| A.3.U6 | The information from the right field of vision from both eyes is sent to the left part of the visual cortex and vice versa. | |
| A.3.U7 | Structures in the middle ear transmit and amplify sound. | |
| A.3.U8 | Sensory hairs of the cochlea detect sounds of specific wavelengths. | |
| A.3.U9 | Impulses caused by sound perception are transmitted to the brain via the auditory nerve. |
Video lessons
Battle of the Beaks
Languages
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Class activities
Bug Hunters activity
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Review materials
Review Lecture