LAB

• Major muscles of the body (Anterior view)


  • TRAPEZIUS
  • MASSETER
  • STERNOCLEIDOMASTOID
  • DELTOID
  • PECTORALIS MAJOR
  • BICEPS BRACHII
  • BRACHIORADIALIS
  • RECTUS FEMORIS
  • SARTORIUS
  • VASTUS LATERALIS
  • VASTUS MEDIALIS
  • TIBIALIS ANTERIOR
  • EXTERNAL OBLIQUE
  • RECTUS ABDOMINIS
  • ADDUCTOR LONGUS
  • GASTROCNEMIUS
  • SOLEUS
• Major muscles of the body (Posterior view)

  • TRICEPS BRACHII
  • LATISSIMUS DORSI
  • GLUTEUS MEDIUS
  • GLUTEUS MAXIMUS
  • BICEPS FEMORIS
  • ACHILLES TENDON
  • TRAPEZIUS
  • DELTOID
  • TERES MAJOR
  • SEMITENDINOSUS
  • GASTROCNEMIUS
• Insertion


  The more movable attachment point of a muscle to a bone
• Prime mover


  The muscle responsible for the main action when a joint is moved
• Antagonists


  Muscles with the opposite action of the prime mover
• Motor unit


  The actual group of muscle fibers in a muscle innervated on a single motor neuron
• Muscle tone


  The state of slight contraction present in healthy muscles
• Muscle fatigue


  A state in which muscle fibers cannot contract effectively due to a lack of oxygen and the accumulation of lactic acid
• Sliding Filament theory


  The theory that explains the events that occur within muscles during contraction
• Neuromuscular junction (NMJ)


  The termination of a neuron on the sarcolemma of a muscle fiber; the space is the microscopic space between the two structures
• Muscles for facial expression

  • Epicranal, Eyebrows, Corrugator
• Muscles for mastication


  • Masseter, Temporalis, Lateral Pterygoid, Medial Pterygoid
• Muscles for eyeball movement

  • Levator palpebrae superioris, Superior rectus, Inferior rectus, Medial rectus, Lateral rectus, Superior oblique, Inferior oblique
• Muscles for pectoral girdle movement

  • Pectoralis major/minor, Serratus anterior, Trapezius, Rhomboids, Latissimus dorsi
• Muscles for femur movement

  • Gluteus medius/minimus, Piriformis, Superior gemellus, Inferior gemellus, Obturator externus, Quadratus femoris, Iliopsoas, Semimembranosus, Semitendinosus, Biceps femoris, Adductor group
• Muscles for head movement

  • Sternocleidomastoid, Splenius capitis, Levator scapulae, Trapezius, Scalenes, Suboccipital muscles, Longus capitis, Semispinalis capitis
• Usual sites for intramuscular injection

  • Deltoid, Vastus lateralis, Ventrogluteal muscles, Rectus femoris