Muscle Tissue Flashcards
Lecture 14 Questions
myofiber type I primarily uses what for energy?
oxidative phosphorylation
Type IIA myofiber uses what type of respiration for ATP production?
aerobic and anaerobic
Type IIB myofiber uses what for ATP production?
anaerobic respiration
Type I myofiber are white fibers?
NO. Dark slow contractions rich in myoglobin
Type IIB myofiber are white fibers?
Yes. Fatigue quickly
cardiac muscles communicate via
gap junctions called intercalated discs
if a sarcomere has thin filaments is it actin or myosin
actin
if a sarcomere has thick filaments is it actin or myosin
myosin
does the A band change width?
no
What 2 bands change width?
I and H Bands
what are the 2 actin associated molecules
troponin and topomyosin
to remember for troponin
I stands for
C stands for
T stands for
I = inhibit C = calcium T = tropomyosin
titin is associated with
Z disk and Z line
plectin binds to
desmin filaments
satellite cells sit under what lamina and functions to do what
under basal lamina and repairs damaged muscle tissue
extrafusal fiber associated with
alpha motor neurons
intrfusal fibers associated with
gamma motor fibers
cardiac muscle tisse is single mononucleated? T/F
true
transver component of cardia muscle is associated with
desmosome and fascia adherens
longitudinal component is associated with
gap junction
what are the 2 components of a gap junction?
transverse and longitudinal component
atrial natriuretic peptides works to reduce
blood pressure
smooth muscle are single nucleated cells with central nuclei? T/F
true
dense bodies are associated with what type of muscle
smooth
