locomotion and movement Flashcards
(84 cards)
cilia helps in movement of food in the
cytopharynx
amoeboid movement includes
macrophage, amoeba, monocytes, lymphocytes
ciliated movement in
paramecium, fallopian tube, bronchioles
about ____% of body weight is due to muscles
40-50%
biceps have
skeletal muscles
each muscle is made of numerous bundles called ___
fascicles
the unit of muscular system is
myocyte or muscle fibre
the plasma membrane of muscles is called
sarcolemma
the mitochondria of muscles is called
sarcosome
____ is the storehouse of Ca2+
sarcoplasmic reticulum
A band consists of ___
myosin + actin
I band consists of ___
actin
both actin and myosin are arranged _____
parallel to each other and also to the longitudinal axis of myofibrils
z line bisects
i band
the distance between two z line is called
sarcomere
during contraction ____
i band shortens, h zone disappears, sarcomere shortens, a band remains same
h zone is the
central part of a band which is not overlapped by actin filaments
each actin consists of _____
two f actin filaments which are helically wounded
each f-actin is a polymer of
monomeric g actin (globular)
two filaments of ____ also run close to f actins
tropomysoins
troponin is a ___
complex protein which is distributed at regular intervals on the tropomyosins
each myosin consists of two ___
monomeric meromysoins
heavy meromyosin contains
globular head and short arm
light meromyosin contains
tail