Sense Organs
Bayani Gaba-gaba
Your eyes are remarkable light detectors. They bend incoming light, focus it onto a screen of light-sensitive cells, and adjust automatically to bright sunshine or a dim room, all without you noticing. The eye is the best-known example of a sense organ.
In this lesson you will learn what a sense organ is, name the parts of the eye and their jobs, and explain the pupil reflex. For the extended curriculum you will also master accommodation (how the lens changes shape to focus) and the roles of rods and cones in the retina.
Manufura
- Describe sense organs as groups of receptor cells responding to specific stimuli: light, sound, touch, temperature and chemicals
- Identify in diagrams and images the structures of the eye, limited to: cornea, iris, pupil, lens, retina, optic nerve and blind spot
- Describe the function of each part of the eye, limited to: (a) cornea - refracts light (b) iris - controls how much light enters the pupil (c) lens - focuses light on to the retina (d) retina - contains light receptors, some sensitive to light of different colours (e) optic nerve - carries impulses to the brain
- Explain the pupil reflex, limited to changes in light intensity and pupil diameter
- [Supplement] Explain the pupil reflex in terms of the antagonistic action of circular and radial muscles in the iris
- [Supplement] 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
- [Supplement] Describe the distribution of rods and cones in the retina of a human
- [Supplement] Outline the function of rods and cones, limited to: (a) greater sensitivity of rods for night vision (b) three different kinds of cones, absorbing light of different colours, for colour vision
- [Supplement] Identify in diagrams and images the position of the fovea and state its function
Takardar Darasi
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Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Nazarin Darasi
Barka da kammala darasi akan Sense Organs. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Which part of the eye refracts light as it enters? A. retina B. cornea C. optic nerve D. blind spot Answer: B
- The part of the eye that controls how much light enters the pupil is the: A. lens B. retina C. iris D. cornea Answer: C
- In bright light the pupil: A. gets larger B. gets smaller C. stays the same D. disappears Answer: B
- To focus on a near object the lens becomes: A. thinner B. fatter C. flatter D. it does not change Answer: B
- Cones in the retina are mainly responsible for: A. night vision B. colour vision C. detecting sound D. controlling the pupil Answer: B
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
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Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan Sense Organs? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
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Duk abin da kake buƙata don yin fice a JAMB, WAEC & NECO.
