Motility Assignments PDF

Homework 1: Motility 1. The medial nuclei of CN III innervates: a. Superior Rectus stemedial b. Inferior Oblique so trochlear herator centaudal c. Inferior Rectus d. Medial Rectus...

Homework 1: Motility 1. The medial nuclei of CN III innervates: a. Superior Rectus stemedial b. Inferior Oblique so trochlear herator centaudal c. Inferior Rectus d. Medial Rectus III Dorsal Dorsal Martha 2. The size principle in the process of activation of skeletal muscles says a. The muscles that are controlled by the smallest, most highly excitable motor neurons are recruited first. It optimizes the recruitment of tension b. The motor units with the smallest muscle fibers are activated first because they are controlled by the smallest, most highly excitable motor neurons. It optimizes the recruitment of tension c. The motor units with the largest muscle fibers are activated first because they are controlled by the largest, most highly excitable motor neurons. It optimizes the recruitment of tension d. The motor units with the smallest muscle fibers are activated first because they are controlled by the smallest, and least excitable motor neurons. It optimizes the recruitment of tension e. The motor units with the smallest muscle fibers are activated first because they are controlled by the smallest, most highly excitable motor neurons. Obstaculizing the recruitment of tension 3. Which of the following is not used for gaze holding? a. Slow vergence b. Optokinetic reflex c. Vestibulo-Ocular reflex Holding d. Pursuit e. Saccades Shifting Fastvergena 4. The time response of extraocular muscles is: a. On the scale of 0.2 seconds b. Shorter than most of the other muscle groups in the human body c. Lacks a relaxation period d. Lacks a contraction period e. Longer than most of the other muscle groups in the human body  se Io Elevatechin 5. Right 41 matter left tilt toright A patient with a left orbital fracture that is blocking the superior division of CN III will: hellto let a. Move their chin down, tend to tilt the head to the right, and rotate their neck towards the left b. Elevate their chin, tend to tilt the head to the right, and rotate their neck towards the right c. Elevate their chin, tend to tilt the head to the left, and rotate their neck towards the left d. Move their chin down, tend to tilt the head to the right, and rotate their neck towards the right e. Elevate their chin, tend to tilt the head to the right, and rotate their neck towards the left 6. A muscle fiber is surrounded by... a. Endomysium b. Perimysium c. Epimysium 7. A Duction is: a. A movement of one eye b. Disjunctive movements of the eyes c. Conjugate movement of both eyes 8. Which of the following muscles have contralateral innervation? a. Superior Rectus SR b. Inferior Oblique c. Medial Rectus d. Lateral Rectus 50 e. Inferior Rectus 9. Which is the truth about saccades? a. Speed up to 90 deg/sec ON b. Mediated by semicircular canals por c. Visually driven eye movement that stabilizes the retinal image during large-fieldOkw motion d. Speed up to 800 deg/sec; Latency