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Exam 1 notes on Muscles

4 Pages

Course Code
BIOL 1300

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Muscles to Knows Lab 4: Muscle Origin Insertion Action Innervation Locating Mnemonic Brachioradialis ­ Common  ­ Lateral surface of  ­ Flex forearm ­ Radial nerve ­ Radial nerve runs  ­ Beer Raiser extensor  distal end of radius under it ­ Behind Radius attachment (lateral  side of humerous) Muscle Origin Insertion Action Innervation Locating Mnemonic Abductor pollicis  ­ Lateral part of  ­ Radial side of  ­ Abduct thumb at  ­ Posterior  Lateral borders of  ­ An APL a day  longus posterior surface of  base of 1  CMC interosseous nerve  anatomical snuff  keeps the thumb  body of Ulna metacarpal bone (PIN) box away ­ Interosseous  ­ Pollicis = “of the  membrane thumb” ­ Middle of  posterior surface of  radius Extensor pollicis  ­ Posterior surface  ­ Base of proximal  ­ Extends thumb at  ­ PIN Lateral border of  ­ Comparing APLs  brevis of radius phalanx of thumb MP and CMC anatomical snuff  to EPLs ­ Interosseous  ­ Abduction of  box ­ They are next to  membrane thumb each other Extension of  thumb Extensor pollicis  ­ Posterior ulna ­ Base of distal  ­ Extends IP joint  ­ PIN Medial border of  longus ­ Interosseous  phalanx of thumb of thumb anatomical snuff  membrane ­ Abducts thumb box ­ Extends thumb Flexor pollicis  ­ Anterior radius ­ Base of distal  ­ Flexes IP of  ­ AIN longus ­ Interosseous  phlanx of thumb thumb membrane Lab 5: Muscle Origin Insertion Action Innervation Locating Mnemonic Gluteus maximus ­ Ilium ­ Iliotibial tract ­ Extends thigh ­ Inferior gluteal  ­ Massive muscle  ­ Maximus is the  ­ Sacrum ­ Gluteal tuberosity ­ Laterally rotates  nerve over butt highest of three thigh Gluteus medius ­ External surface  ­ Greater  ­ Abducts thigh ­ Superior gluteal  ­ Covered by deep  ­ Medius is middle  of ilium trochanter of femur ­ Medially rotates  nerve fascia of the three thigh ­ Superior part  below maximus Gluteus minimus ­ External surface  ­ Greater  ­ Abducts thigh ­ Superior gluteal  ­ Below medius ­ Minimus is the  of ilium trochanter of femur nerve deepest of three Piriformis ­ Anterior surface  ­ Greater  ­ Laterally rotates  ­ Ventral rami S1 –   ­ Just medial and  of sacrum trochanter of femur thigh S2 inferior to gluteus  medius Obturator internus ­ Internal surface  ­ Greater  ­ Laterally rotates  ­ Nerve to  ­ Between the split  ­ GOG – gemellus  of obturator  trochanter of femur thigh obturator internus of inferior and  obturator (inside –  membrane superior gemellus  internus) gemellus muscles Superior gemellus ­ Ischial spine ­ Greater  ­ Laterally rotates  ­ Nerve to  ­ Top of the three  ­ GOG trochanter of femur thigh obturator internus GOG muscles Inferior gemellus ­ Ischial tuberosity ­ Greater  ­ Laterally rotates  ­ Nerve to  ­ Bottom of three  ­ GOG trochanter of femur thigh quadratus femoris GOG muscles Quadratus femoris ­ Ischial tuberosity ­ Greater  ­ Laterally rotates  ­ Nerve to  ­ Square­ish  ­ Quad like square trochanter of femur thigh quadratus femoris muscle below  GOG muscles Obturator externus ­ External surface  ­ Trochanteric  ­ Laterally rotates  ­ Obturator nerve ­ Covers outer wall  of obturator  fossa of femur thigh of anterior surface  membrane of inferior pelvis Muscle Origin Insertion Action Innervation Locating Mnemonic
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