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Sensory Syst General
The sensory system
| Question | Answer |
|---|---|
| There are five types of sensory receptors. Name them | Chemorecepters, Pain/nociceptors, thermoreceptors, mechanoreceptors, photoreceptors |
| Sensory WHAT transmit information to the CNS. | Neurons |
| A WHAT is a specialized area of a sensory neuron that detects a specific stimulus. | Receptor (e.g. receptors in eye respond to light, tongue to taste) |
| The receptors are stimulated by changes in chemical concentrations of substances. | Chemoreceptors |
| These receptors are stimulated by tissue damage or distention. | Pain/nociceptors |
| These receptors are stimulated by changes in temperature. | Thermoreceptors |
| These receptors are stimulated by changes in pressure or movements of body fluids. | Mechanorecepters |
| These receptors are stimulated by light. | Photoreceptors |
| A sensation is the WHAT or WHAT awareness of incoming sensory information. | Conscious or unconscious |
| A perception refer to WHAT awareness of a sensation. | Conscious (aware of stimulus) |
| What are the four components involved in experiencing sensation? | Stimulus, receptor, sensory nerve, special area of the brain. |
| Stimulus component e.g. WHAT is the stimulus for the sense of sight? In the absence of it, you cannot see. | Light |
| Receptor component: e.g. Light waves stimulate the photoreceptors in the eye, producing a WHAT impulse? | Nerve |
| Sensory nerve component: e.g. The nerve impulse is conducted by a WHAT (optic WHAT) to the occipital lobe of the brain. | Sensory nerve, optic |
| Special area of the brain component: e.g. With seeing, the sensory information is interpreted as WHAT in the occipital lobe of the brain. | Sight |
| What are the two characteristics of sensation? | Projection and adaptation |
| This term describes the process whereby the brain, after receiving a sensation, refers that sensation back to its source. | Projection. (You see with your eyes, hear with your ears because the cortex of brain receives the sensation and projects it back to its source.) |
| The experience of phantom limb pain is another example of WHAT? | Projection |
| When you enter a room with a strong odour, the odour at first seems overwhelming. After a short time the odour becomes less noticeable. This is an example of sensory WHAT? | Adaptation (the sensory receptors in the nose have adapted. With continuous stimulation, sensory receptors become less responsive) |
| Receptors WHAT in their ability to adapt? | Vary |
| Pain receptors do not WHAT, whereas the receptors for the smell WHAT rapidly. | Adapt |
| Generally, receptors that regulate homeostatic mechanisms WHAT very slowly or not at all. | Adapt |
| There are two groups of senses, WHAT and WHAT? | General and special senses |
| General senses are called general or WHAT because their receptors are widely distributed throughout the body. | Somatic |
| The WHAT senses are localized within a particular organ in the head and include taste, smell, sight, hearing, balance. | Special senses |
| The WHAT senses include pain, touch, pressure, temperature and proprioception. | General senses |
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JoJo500%
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