4 An effector organ The muscles of the thigh the quadriceps femoris are

4 an effector organ the muscles of the thigh the

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4. An effector organ. The muscles of the thigh, the quadriceps femoris, are effector organs for this reflex. In response to the motor nerve impulse, the muscles contract and extends the leg at the knee. I Olfactory Person is asked to sniff and identify various odors (e.g., vanilla). Inability to smell (anosmia) II Optic Examination of the interior of the eye by ophthalmoscopic visualization. Use of eye charts and tests of peripheral vision. Diminished, or loss of, vision III Oculomotor Observation of eyelids. Test the ability of the eyes to follow a moving object. Examination of pupils for size, shape, and size equality. Pupillary reflex is tested with a penlight (the pupils should constrict). Test the ability of the eyes to converge. Drooping upper eyelids (ptosis) Difficulty in focusing eyes on an object Absence of pupillary reflex (e.g., dilated and fixed pupils that may indicate an increase in intracranial pressure) IV Trochlear Test ability of the eyes to follow a moving object. Inability to move eyeball in a particular direction V Trigeminal Sensations (pain/touch/temperature) are tested with sharp pin and hot/cold objects. Corneal reflex (sensory) is tested with a cotton wisp. Motor function is tested by asking the person to open the mouth (against Loss of sensation (pain/touch); paresthesias (tingling, itching, and numbness) Pain, tearing, and blinking Shift of jaw to side of lesion when opened Difficulty in chewing
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resistance) and to move the jaw from side to side. VI Abducens Test ability of the eyes to follow a moving object. Inability to move eyes laterally VII Facial Person is asked to cause facial muscle movement (e.g., smile, close eyes, wrinkle forehead, whistle). Test anterior two-thirds of tongue for sweet, salty, sour, and bitter taste. Ability to secrete tears is tested by asking person to sniff ammonia fumes. Bell’s palsy (expressionless face, drooping mouth and drooling, inability to close eyes and blink) Loss of taste on anterior two-thirds of tongue on side of lesion VIII Vestibulocochlear Hearing is checked by air and bone conduction (use of tuning fork).
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  • Fall '19
  • Spinal nerve, Brachial plexus

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