locomotion and movement Flashcards
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
cross bridge is formed between
actin binding site of myosin and myosin binding site of actin
neurotransmitter involved in contraction is
acetylcholine
contraction ends when
ca2+ is pumped back into the sarcoplasmic reticulum
number of bones in humans is
206
number of bones in skull is
22
number of cranial bones are
8
number of facial bones are
14
paired skull bones are
temporals and parietals
sella turscia is present in
sphenoid
the tongue bone is
hyoid
first vertebra is
atlas
second vertebra is
axis
skull is dicondylic because
two occipital condyles articulate with atlas
number of vertebrae
26
vertebral formula in adults is
C7 T12 L5 S1 Co1
spinal cord runs through the
neural canal
sternum is located in the
ventral midline of thorax
prosternum articulates with
first rib and clavicle
mesosternum articulates with
2-7th ribs
the pointed end of sternum is called
xiphoid process
the atlas and axis are connected by
odontoid process
the ribs are bicephalic because
two dorsal articulation surfaces
vertebrosternal ribs are
1-7th pairs
vertebrochondral ribs are
8, 9, 10
renal ribs are
11 and 12
ribs and sternum connected by
hyaline cartilage
cartilage between the vertebrae which act as shock absorbers are
hyaline
appendicular skeleton includes
126 bones
each limb has
30 bones
forelimb has
humerus, radius, ulna, 8 carpals, 5 metacarpals, 14 phalanges
hindlimb has
femur, tibia, fibula, patella, 7 tarsals, 5 metatarsals, 14 phalanges
knee cap covers the knee
ventrally
humerus and ulna articulate by
olecaron process
humerus and scapula by
glenoid cavity
scapula is
large triangular dorsal bone
elevated ridge of scapula is called the
spine
each clavicle has
two curvatures
pelvic girdle is formed by
two coxal bones
each coxal bone has
ilium, ischium and pubis
_____ connects the two coxal bones
pubic symphysis
femur and pelvis by
acetabulum
pelvis is at the level of ____
sacrum
fibrous joints between
cranial bones (sutures)
cartilaginous joints
ribs and sternum, intervertebral
pubic symphysis contains
fibrous joint
synovial joints is filled with
synovial fluid
ball and socket between
femur and pubis, humerus and scapula
hinge joint
knee, elbow
pivot joint
atlas and axis
gliding joint
carpals and tarsals
saddle joint
carpals and metacarpals and tarsals and metatarsals
ellipsoidal joint
phalanages
affecting neuromuscular junction and cause paralysis of muscle
myasthenia gravis
myasthenia gravis is a
autoimmune disorder
tetany is caused by
low ca2+, spasm
muscular dystrophy is
genetic, progressive degeneration of skeletal muscle
osetoporosis caused by
decreased estrogen, fractures
arthritis
inflammation of joints
gout is
uric acid crystals in joints
rheumatoid arthritis is
autoimmune