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46 Cards in this Set
- Front
- Back
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composed of individual muscle cells with multiple nuclei
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MUSCLE FIBER
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THE PLASMA MEMBRANE OF EACH MUSCLE FIBER
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SARCOLEMMA
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CONTAINS GLYCOGEN FOR ATP FOR ENERGY ALSO CONTAINS MYGLOBIN
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SARCOPLASM
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TUNNEL FROM SURFACE TO CENTER OF THE FIBERS ALLOWS ACT.POTENIAL TO SPREAD THROUGH FIBER
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T-TUBULES OR
TRANSVERSE |
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THE POINT IN WHICH THE NEURON AND THE MUSCLE COMMUNICATE
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NMF
NEUROMUSCULAR JUNCTION |
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NEURONS THAT STIMULATE/EXCITE THE MUSCLE
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SOMATIC MOTOR NEURONS
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LONG PROTEIN THREADS RESPONSIBLE FOR MUSCULE CONTRACTION
(MADE OF MYOFILAMENTS) |
MYOFIBRILS
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2 TYPES OF MYOFILAMENTS
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MAKES UP MYOFIBRILS
1. THIN FILAMENTS OF ACTIN 2. THICK FILAMENTS L SHAPED MADE OF MYOSINE |
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SURROUNDS MYOFIBRIL AND CREATES A NETWORK
STORES CALCIUM SACS ARE (CISTERNAE) |
SARCOPLASMIC RETICULUM
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CONTRACT PROTEINS
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ACTIN MYOSIN
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REGULATORY PROTEINS
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TROPONIN
TROPOMYOSIN |
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SMALL COMPARTMENTS THAT ENCLOSE FILAMENTS IN A MUSCLE FIBER
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SARCOMERES
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ALTERNATING LIGHT & DARK BANDS IN MUSCLE FIBERS
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STRAITIONS
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DARK BANDS OF ACTIN IN A MUSCLE CELL
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I BANDS
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LIGHT BANDS OF MYOSIN IN A MUSCLE CELL
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A BANDS
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SEPERATES SARCOMERES
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Z LINES
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SPECIFIC NEURON WITHIN A CELL BODY LOCATED IN BRAIN STEM AND SPINAL CORD
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MOTOR NEURON
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SUPPLIES MUSCLES WITH ELECTRICAL SIGNALS
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MOTOR NEURON
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CONSISTS OF 1 NERVE FIBER, IT INTERVATES ALL MUSCLE FIBERS TO CONTRACT AS ONE
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MOTOR UNIT
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NEUROTRANSMITTER RESPONSIBLE TO CARRY ACTION POT. FROM NERVE TO MUSCLE
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ACETYLCHOLINE
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NERVE SIGNAL TRANSMITTED FROM AXON OR NERVE TO MUSCLE TISSUE
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ACTION POTENTIAL
AP |
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SET OF VESICLES RESPONSIBLE FOR RELEASING ACTIN
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SYNAPTIC KNOB
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MINIMUM VOLTAGE NECESSARY TO TRIGGER AN ACTION POT. TO PRODUCE CONTRACTION
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THRESHOLD
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POINT ON THE MUSCLE THAT RECIEVES A NEURAL IMPULSE
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MOTOR END PLATE
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A POLORIZED CELL/OR HAVING ELECTRICAL CHARGE POTENTIAL MAINTAINED BY POT PUMP
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RMP
RESTING MEMBRANE POTENTIAL |
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4 METHODS OF SKELETAL CONTRACTIONS
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EXCITATION
EXCITATION/CONTRACTION COUPLING CONTRACTION RELAXATION |
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FORCE OF MUSCLE CONTRACTION DEPENDS ON LENGTH OF THE SARCOMERES PRIOR TO CONTRACTIONS
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LENGTH TENSION
RELATIONSHIP |
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WHEN THERE IS A OVERLAP BETWEEN THICK AND THIN FILAMENTS IN A MUSCLE IT HAS
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THE MOST TENSION
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WHEN THERE IS NOT A OVERLAP AND THE MUSCLE IS OVERLY STRETCHED
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THE MUSCLE CANNOT CONTRACT
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THE RIGIDITY OF MUSCLES DUE TO LEAKY CELLULAR MEMBRANES PERPETUAL STATE OF RIGIDITY
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RIGOR MORTIS
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SMALL AMT OF TAUGHTNESS/TENSION IN THE MUSCLE DUE TO WEAK INVOL CONTRACITON OF MOTOR UNITS
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MUSCLE TENSION
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THE WHOLE MUSCLE IS INCREASED BY # OF MOTORUNITS ACTIVATED
(HIGHER STIM. MORE UNITS STRONGER CONT) |
CONTRACTION STRENGH
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STAIRCASE EFFECT GRADUAL SERIES OF STRONGER CONTRACTIONS
AS RESULT OF EXPOSURE TO SAMES SERIES OF SIGNAL STRENGH |
TREPPE
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MUSCLE CANNOT RESPOND TO ANOTHER IMPULSE
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REFRACTORY PERIOD
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STIMULI ARRIVES AT DIFFERENT TIMES RESULTS IN STRONGER CONTRACTIONS
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WAVE STIMULATION
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WHEN STIMULUS CONTINUES WITHOUT MUSCLE RELAXING MAINTAINS A WAVERING CONTRACTION (20-30 STIM/SECOND)
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INCOMPLETE/UNFUSED TETNUS
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MUSCLE IS COMPLETELY RIGID NO PERIOD OF REST
80-100 STIMULI PER SECOND |
COMPLETE/FUSED TETNUS
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MUSCLE TENSION PRODUCES NO CHANGE IN LENGTH OR MOVEMENT
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ISOMETRIC CONTRACTION
(HOLDING A BOOK OUT TO SIDE) |
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CHANGE IN MUSCLE LENGTH AND MOVEMENT
NO CHANGE IN TENSION |
ISOTONIC CONTRACTION
2 TYPES |
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2 TYPES OF ISOTONIC CONCTRACTION
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CONCENTRIC-MUSCLE SHORTENS WITH CONTRACTION
ECCENTRIC-MUSCLE LENGTHENS WITH CONTRACTION |
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O2 EXCHANGE SUPPLIES ENERGY FOR MUSCLE CONTRACTION
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AEROBIC RESPIRATION
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LACTIC ACID BUILDS UP AND PREVENTS O2 EXCHANGE MUSCLE CATALYZES STORED CREATINE TO CREATE ADP THEN TURNS TO ATP
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ANAEROBIC RESPIRATION
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INABILITY TO CONTRACT
HIGH CALCIUM LACTIC ACID BUILD UP NO O2 DEPETED GLYCOGEN INADEQUATE ACETALCHOLINE |
MUSCLE FATIGUE
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THE AMT OF O2 THAT MUST
BE REPLENISHED AFTER EXERCISE |
O2 DEBT OR
RECOVERING 02 UPTAKE |
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INVOLUNTARY MUSCLE
HAS GAP JUNCTION AUTO BEATS 25% FIBERS MADE OF MITOCHONDRIA |
CARDIAC MUSCLE
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THICK/THIN FILAMENTS
INVOLUNTARY SINGLE NUCLEUS VICERAL MUSCLE CALCIUM FROM EXTRCELL FLUID FOUND IN UT,RT, REPR, STRETCHS AND MAINTAINS |
SMOOTH MUSCLE
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