Muscular System Flashcards
(24 cards)
Functions
Protection organs
Movement
Energy sources
Oxygen
Glucose (glycogen fat)
Contract
Shortening muscle causes movement
Spasm
Abnormal contractions muscle
Cramp
Sudden painful contraction muscle
Atrophy
Weakening muscle
Hypertrophy
Strengthening muscle
Rigor Mortis
No action potential muscle become rigid stiff after death 15-25 min
Prime mover
Muscle contracting cause movement
Antagonist
Relaxes allow movement
Smooth
Involuntary inner system body
Cardiac
Involuntary
Heart muscle
Biceps
Upper front arm flexes bends elbow
Triceps
Upper back arm extends straightens elbow
Deltoid
Top shoulder/ raises arm above head
Pectoralis
Upper front thorax brings arms towards chest
Facts
40-50% body weight
Muscle weighs more than fat
Controlled CNS (brain/spinal cord)
75% water 20% protein 5% carbohydrates
Trapezius
Inner shoulder muscle/supports neck raises shoulder
Latissimus Dorsi
Major back muscle/supports back pulls arms downward
Quadriceps
Upper front leg muscle extends straightens knee walking running
Hamstrings
Upper back leg flexes bends knee walking running
Abdominals
Front lower thorax bend waist
Gluteus Maximus
Fanny (buttocks) muscle standing up leg behind body
Diaphragm
Separates thoracie abdominal cavities muscle respiration
