뒤로Peripheral Nervous System and Reflex Activity - Anatomy & Physiology
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Conveys somatic sensory impulses from nasal cavities to the olfactory bulb of the cerebrum.
Conveys somatic sensory impulses from retina to thalamus via optic tract; impulses then relayed to occipital lobe.
Controls four of six eye muscles via somatic motor axons; autonomic motor axons control focusing and pupil changes; autonomic sensory axons involved in eye muscle proprioception.
Controls one eye muscle with somatic motor axons; autonomic sensory axons involved in eye muscle proprioception.
Largest cranial nerve; supplies somatic sensory axons to face and somatic motor axons to chewing muscles.
Dentists desensitize jaws by injecting anesthetic into alveolar branches of maxillary and mandibular divisions.
Supplies somatic motor axons to one eye muscle; contains autonomic sensory axons for proprioception.
Supplies somatic motor and autonomic sensory axons to facial muscles; autonomic motor axons control lacrimal and salivary glands; somatic sensory axons innervate taste buds on anterior two-thirds of tongue.
Sensory axons innervate cochlea and vestibule of inner ear, permitting hearing and equilibrium.
Supplies somatic sensory axons to posterior one-third of tongue and pharynx; somatic motor and autonomic sensory axons innervate pharynx muscles for swallowing; autonomic motor axons control parotid gland.
Supplies autonomic motor and sensory axons to nearly all thoracic and abdominal viscera including heart, lungs, and stomach.
Supplies somatic motor and autonomic sensory axons to pharynx, trapezius, and sternocleidomastoid muscles, enabling swallowing and head movements.
Supplies somatic motor and autonomic sensory axons to tongue muscles involved in swallowing and speaking.
31 pairs of spinal nerves; all are mixed nerves containing both motor and sensory axons.
Formed by ventral (motor) and dorsal (sensory) roots.
Divide into ventral rami and dorsal rami; ventral rami form plexuses supplying limbs and anterior body.
Located under sternocleidomastoid muscle; contains the phrenic nerve which serves the diaphragm.
Gives rise to nerves serving upper limbs; contains the radial nerve which innervates posterior arm muscles and skin.
Serves abdominal wall and anteromedial thigh; contains the femoral nerve which innervates anterior thigh muscles and skin.
Serves buttocks, lower limbs, and pelvis; contains the sciatic nerve which innervates posterior thigh muscles and leg skin.
Two types: unlearned (innate) reflexes and learned (acquired) reflexes.
Includes receptor, sensory neuron, integration center, motor neuron, and effector.
Includes flexor reflex and crossed extensor reflex.