FINAL Flashcards
SFT: 1. __ in neuron results in release of __ into synaptic cleft
Action potential(AP)
Acetylcholine (Ach)
Muscle fibers shortening/lengthening when actin and myosin slide past each other
Sliding Filament theory
SFT: 2. __ binds with receptors on motor endplate leading to __ in __
Ach
AP
muscle fiber
SFT: 3. AP in muscle fiber results in release of __ from __
Calcium (Ca+)
Sarcoplasmic Reticulum (SR)
SFT: 4. Ca+ binds to __ & __ moves away from active site on actin
Troponin
Tropomyosin
SFT: 5. Myosin head attaches to actin forming a __ pulling actin towards center of __
Crossbridge
Sarcomere
TF: ALL muscle fibers contract and produce force
True
High oxidative capacity & fatigue resistant
Type I muscle fiber (slow ox)
Moderate oxidative and anaerobic capacity with some fatigue resistance
Type IIa muscle fiber (fast oxidative glycolytic)
High anaerobic capacity and fatigue easily
Type IIx muscle fiber (fast glycolytic)
Muscle with high composition of type I fibers
Soleus
Muscle with mixture of type I and type II fibers
Quadriceps
Weight bearing exercises increase bone…
mineral density
Basic unit of the nervous system
Nueron
Conducts impulses from CNS to muscles
Motor (efferent) neurons
Carries information from periphery/muscle to CNS
Sensory (afferent) nuerons
Band containing both thin and thick filaments
A band
Band containing only actin(thin) filaments
I band
Zone middle of A-bands
H Zone
Line middle of H-zone
M-line
Oxygen transport is carried via __
Hemoglobin
Measure of the force required to maintain blood flow
Total peripheral résistance
TPR: Vessels constricting/dilating alter _ _
Blood flow
Amount of blood pumped by the heart in 1 minute
Cardiac Output