Lab 5: Muscle Projections Flashcards
Name & Characteristics
Smooth Muscle (ls)
Characteristics: Involuntary, non-striated, single nucleus; may possess gap junctions
Name & Function
Smooth Muscle (ls)
Function: Constriction & dilation (involuntary movement)
Name & Location:
Smooth Muscle (ls)
Location: Lines blood vessels, gastrointestinal tract, respiratory tract, organs, reproductive structures, attached to hair follicles, in the iris and ciliary body of the eye, etc.
Name & Characteristics
Cardiac Muscle (ls)
Characteristics: Involuntary, striated, intercalated discs, single nucleus, muscle fibers anastomose
Name & Function:
Cardiac Muscle (ls)
Function: Create pumping action required to distribute blood through the body through contraction
Name & Location
Cardiac Muscle (ls)
Location: Myocardium of heart
Name & Characteristics
Skeletal Muscle (ls)
Characteristics: Voluntary, striated, multi-nucleated; muscles are surrounded by epimysium, fascicles by perimysium, and muscle fibers by endomysium; A and I bands visible
Name & Function
Skeletal Muscle (ls)
Function: Voluntary movement of the body
Name & Location
Skeletal Muscle (ls)
Location: Attached to bone (the visible muscles); ex: biceps, gastrocnemius, quadriceps, gluteus maximus, etc.
Name & Characteristics
Neuromuscular Junction (motor end plate)
Characteristics: Large motor units control movement of large skeletal muscles and smaller motor units control movements of muscle of they eye; terminal bulbs do not actually make physical contact with muscle fibers
Name & Function
Neuromuscular Junction (motor end plate)
Function: Conduct action potential from motor neuron to muscle fiber; the stimulation of mucle fibers
Name & Location
Neuromuscular Junction (motor end plate)
Location: The muscle-nerve interface
