T and L Chapter 6 Word Scramble
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| Question | Answer |
| What are the three important sources of feedback involved in motor control? | touch, proprioception, and vision. |
| Mechanoreceptors are sensory receptors that detect | skin stretch and joint movement |
| Mechanoreceptors relay ______ _____ _____ to the CNS. | tactile sensory information |
| Touch influences | movement accuracy, consistency, timing, force adjustments, and distance. |
| Proprioception is | the perception of limb, body, and head movement characteristics. |
| Information about limb movement direction, location in space, and velocity is sent to the CNS by | afferent neural pathways. |
| Proprioception is transmitted by | proprioceptors. |
| Proprioception influences | movement accuracy, timing of the onset of motor commands, coordination of body segments, postural control, and spatial-temporal coupling. |
| Proprioceptors are located in | muscles, tendons, ligaments, and joints. |
| Muscle spindles | detect change in muscle length. |
| Golgi-tendon organs | detect change in muscle tension, or force |
| Joint receptors | detect changes in joint movement at the extremes of angular movement and position. |
| Deafferentation | used to make proprioceptive feedback unavailable |
| Without vision, | movement is negatively affected. |
| Vision is | the result of the sensory receptors of the eyes receiving and transmitting wavelengths of light to the visual cortex of the brain by way of the optic nerve. |
| Cornea | a clear surface that covers the front of the eye |
| Pupil | the opening in the eye that lets in light. |
| The amount of light detected by the eye | influences the diameter of the pupil. |
| Iris | the eye structure that surrounds the pupil and provides the eye its color. |
| Lens | the transparent eye structure that sits just behind the iris. |
| This allows the eye to focus on various distances. | lens |
| The neural aspects of vision begins with the _________. | retina |
| _____ respond to low levels of light. | rods |
| ______ only respond to bright light. | cones |
| Rods are concentrated at the ________. | periphery |
| Cones are concentrated at the ________. | center |
| Cones are critical in ______, ______, and ________. | color vision, visual acuity, and central vision. |
| Waves are __________ in the retina. | refracted |
| Axons of neurons in the retina called ganglion cells form the | optic nerve |
| The optic nerve is cranial nerve number what? | 2 |
| The optic nerves from the two eyes meet near the base of the brain and form the | optic chiasm |
| Visual field | refers to the image or scene being viewed. |
| Central vision | detects information only in the middle 2 to 5 degrees of the visual field. |
| Peripheral vision | detects information outside of the middle 2 to 5 degrees of the visual field. |
| _______ ________ is needed for the successful achievement of the action goal. | central vision |
| Central vision is related to | visual acuity |
| Peripheral vision is related to | velocity and control |
| _______ allows action initiation and object contact to occur automatically at a specific time to contact | tau |
| _____ allows us to recognize and describe what we see | vision-for-perception |
| ______allows us to move in our environment | vision-for -action |
| When there is a sufficient amount of time, people can make | movement corrections |
| Movement errors may occur due to movement or environmental conditions that were _____ _____ to allow for a correction. | too fast |
| Vertical visual field is how many degrees? | 160 |
| Horizontal visual field is how many degrees? | 200 |
| Binocular vision is | seeing with both eyes. |
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millymarie98
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