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 |