Muscle Flashcards
myenteric plexus
nerve supplying sympathetic and parasympatetic control to the gut
morphology of smooth muscle cells
spindle
smooth muscle endomysium is made of…
reticular fibers
what covering do smooth muscle cells lack
epimysium
does wavy appearance infer contracted or relaxed muscle
contracted
caveolae
invaginations of the smooth and cardiac muscle membrane, analogous to T tubules
what type of tissue is endomysium
loose CT
Toponin I
inhibits binding of myosin to actin
Troponin C
binds Ca++
Troponin T
binds troponin complex to tropomyosin
Tropomyosin
compsed of two proteins. connect actin with troponin complex
dark bands of striated muscle
A (anisotropic) bands
light bands of striated muscle
I (isotropic) bands
cellular inclusions of striated muscle
glycogen
CT that connects muscle to bone
tendon (dense reg CT continuous with endo-, peri- and epimysium)
intercalated discs: definition and location according to sarcomere
cardiac cell adhesion structures with lateral and transverse specializations. Found at the Z-line (terminal end of the myofibrils)
does smooth muscle have endomysium
Yes- secreted reticular fibers rather than fibrocytes of skeletal endomysium
junctional folds
the creases in the sarcolemma that increase surface area at the motor end plate
what are the 2 types of spindle cells
bag cell (large) chain cell (small)
features of cardiac tissue
spaces between the cells and only one or two nuclei not on periphery of the cell
