Chapter 9 Muscles And Muscle Tissue

Chapter 9 Muscles And Muscle Tissue A& P  
  
Changes are done, please view the flashcard.

Preview Flashcards

FrontBack
Cardiac and skeletal muscle are _____
 
striated
Cardiac and smooth muscle are also _______
 
involuntary
smooth muscle is typically found within the walls of hollow visceral organs, blood vessels, and ____
 
airways
A skeletal muscle cell is called a _____ fiber
 
muscle
epimysium
 

epimysium
perimysium
 

perimysium
fasicicles and endomysium and muscle fibers.
 

fascicles
Functional unit of muscle contraction is the sarcolemma, sarcoplasmic reticulum, and _____
 
sarcoplasm
Thin myofilaments are composed of myosin, actin, and light chain _____
 
myokinase
The sarcoplasmic reticulum of muscle fibers is a storage site for calcium ions and releases the calcium when stimulated.
 
by action potential
_ tubules are continuous with the sarcolemma
 
T
An action potential is a rapid up and down shift in the voltage across a membrane from the negative resting to a positive ____
 
value
resting membrane potential is maintaned by
 
sodium potasium ATP pump
Acetyl choline is the neurotransmitter released from vesicles in the synaptic knob of the ____
 
neuron
Excitation-Contraction Coupling
 
1.) Nerve signal 2.) Calcium is released 3.) ACh diffuses across synaptic cleft 4.) Binding causes a comformational change 5.) K+ gates open 6.) Depolarization spreads along sarcolemme 7.) depolar runs through T Tubules 8.) Ca2+ diffuses out of SR and binds to troponin 9.) Active sites exposed 10.) ATP causes release of G-Actin
A ___ unit consists of a motor neuron and the muscle fibers it innervates.
 
motor
The amount of tension generated by a muscle and the force of its contraction depends on how relaxed or contracted it was prior to ________.
 
stimulation
Concentric muscle contractionecentric
 
muscle curling upweight going down

Upgrade and get a lot more done!
Upgrade