click below
click below
Normal Size Small Size show me how
Chapter 15 and 16
ANS and Special Sense
Question | Answer |
---|---|
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 |