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Definition
| detect changes in external/internal environment. Set up impulses to central nervous system when interpretation is. |
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| mechanical energy (motion) |
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| bring an action (from light) |
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Term
| Photoreceptors for Protozoans |
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Definition
| they have pigments in their cells that absorb light and bring change |
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Term
| Photoreceptors for Jellyfish and flatworms |
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Definition
| have ocelli - photoreceptors cells and pigment cells. |
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Term
| Photoreceptors for Annelids and Mollusks |
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Definition
| have ocelli (more complexed) pigment cup ocelli - more sensitive |
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Term
| Photoreceptors of Arthropods and crustaceans |
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Definition
| Have compound eyes- Each eye section= omatidia = face everywhere; cant see in color; fixed local length; bees can see color. |
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Term
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Definition
| tough, outer fibrous layer |
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Definition
| highly vascular, heavily pigmented |
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Definition
| photoreceptor cells for impulses |
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Definition
| carries impulses to occipital lobe to cerebrum to be translated to vision. |
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Definition
| yellow - light has to be on it then you see things in great detail |
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Definition
| allows eye to stay together |
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Definition
| transparent part that light must pass through |
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Definition
| filled withi fluid (aqueous's humor) |
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Definition
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Definition
| opening for light to pass (can control and relax) |
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Definition
| contracts/relaxes to control width of lens. Suspensory ligaments |
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Definition
| stimulated by bright light; color vision. |
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Definition
| stimulated by dim light; black/white vision |
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Definition
| causes chemical change & neuron impulses over optic nerve to occipital nerve of cerebrum=sight. |
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Definition
| 4 types - touch Touch/ pressure/proprioceptors/hearing |
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Definition
| nerve endings close to skin |
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Definition
| deeper under surface of skin |
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Definition
| impulses involved in skeletal muscle (if stretched); fine motor coordination of muscles |
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Definition
| air pressure/waves captured by pinna. causes movement of ear drum |
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Definition
| most invertebrates have this for balance (come from external environment). |
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Term
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Definition
| set up impuleses in respnonse to organism's chemical environment |
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Definition
| invovled w/impulses traveling from brain/spinal chord to some effector structure . |
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Definition
| Hydrostatic skeleton (worms) - body cavity is lined with muscles & filled w/fluid; pressure w/fluids gives it control over its activities |
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| arthropods have exoskeleton |
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Definition
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Definition
| skull, vertebrae column, sterrum, breastbone, ribs |
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Definition
Pectoral girdle - clavicle/scapula/arm/hand bones
Pelvic girdle - illium, ischium, pubis, leg, foot |
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Term
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Definition
| muscle directly attached to skeleton..one end is the membrane---> Periostium (does not stretch)..other end is attached to tendon stretches. AKA striated muscle (striped) voluntary. |
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| involuntary/ lines heart; constantly contracts & relaxes |
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