Unit Wordlist and Learning Resources
Unit Wordlist: The Muscular System
The following Terms and Concepts are important in the study of the Muscular System:
| Microscopic Structure:
fascicle intercalated disc motor end-plate myofibril myosin perimysium sarcomere sarcolemma synaptic cleft T-tubule Thick filament (myosin) Thin filament (actin) Tropomyosin Troponin Muscle type: Cardiac muscle Skeletal muscle Smooth muscle
Muscle Actions: abduction adduction flexion insertion origin pronation supination
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Major Muscles of the Body:
Orbicularis oculi m. Buccinator m. Orbicularis oris m. Sternocleidomastoid m. Frontalis m. Temporalis m. Occipitalis m. Trapezius m. Latissimus dorsi m. Deltoid m. External oblique m. Rectus abdominus m. Pectoralis major m. Triceps brachii m. Biceps brachii m. Brachioradialis m. Supinator m. Pronator teres m. Quadriceps femoris Rectus femoris m. Vastus lateralis m. Vastus medialis m. Vastus intermedius m. Biceps femoris m. Gluteus maximus m. Tibialis anterior m. Gastrocnemius m. Soleus m.
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Muscle contraction:
acetylcholine autorhythmicity contractility depolarize excitability excitation-contraction coupling motor unit neuromuscular junction (NMJ) neurotransmitter power stroke twitch tetanus twitch voltage-gated sodium channels wave summation
Disruptions in Homeostasis: atrophy fibrosis hypertrophy paralysis
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protein that makes up most of the thin myofilaments in a sarcomere muscle fiber
loose, and well-hydrated connective tissue covering each muscle fiber in a skeletal muscle
outer layer of connective tissue around a skeletal muscle
