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Chapter 15 and 16

ANS and Special Sense

QuestionAnswer
Somatic Motor System 1. ONE motor neuron extends from CNS to skeletal muscle 2. Axons well MYELINATED so conduct impulses fast
Autonomic Motor System 1. Chain of TWO motor neurons 2. Slow impulse conduction due to thinly or UNMYELINATED axons
Referred Pain 1. Visceral often perceived to originate somaticly (from outer body) 2. causes heart attacks which produces pain on chest wall and down left arm 3. innervated by same spinal segments
Extrinsic Eye Muscles 1. Lateral Rectus 2. Medial Rectus 3. Superior Rectus 4. Inferior Rectus 5. Inferior Oblique 6. Superior Oblique
Lateral Rectus Muscle of Eye 1. Action- moves eye laterally 2. Innervated by: VI Abducen
Medial Rectus Muscle of Eye 1. Action- moves eye medially 2. Innervated by: III Oculomotor
Superior Rectus Muscle of Eye 1. Action- Elevates eye and turns it medially 2. Innervated by: III Oculomotor
Inferior Rectus Muscle of Eye 1. Action- Depresses eye and turns it medially 2. Innervated by: III Oculomotor
Inferior Oblique Muscle of Eye 1. Action- Elevates Eye and turns it laterally 2. Innervated by: III Oculomotor
Superior Oblique Muscle of Eye 1. Action- Depresses Eye and turns it laterally 2. Innervated by: IV Trochlear
Tunics of Eyeball 1. makes wall of eyeball structure 2. three: fibrous, vascular, and sensory
Ears layers External, middle, and inner
External Ear Parts 1. Outer Ear 2. AURICLE 3. External Acoustic Meatus 4. Tympanic Membrane
Middle Ear Parts - Located in temporal bone -Composed of three smallest bones in body 1. Malleus 2. Incus 3. Stapes
Inner Ear Parts 1. Vestibule 2. Cochlea 3. Semicircle Canals
Created by: vs604