17422.Origin of striated muscle is form which germ layer of embryo:
Ectoderm
Endoderm
Mesoderm
All of these
17424.The type of muscles present in our
Thigh are striated and voluntary
Upper arm are smooth muscle fibres fusiform in shape
Heart are involuntary and unstriated smooth muscles
Intestine are striated and involuntary
17426.Motor neurons electrically stimulate nearby muscle fibers at ______.
Creatine phosphate
Actin filament
Neuromuscular junction
Cross-bridges
17427.Which one of the following statement is true about spongy bone?
Unorganized appearance
Lighter than compact bone
Surrounds the bone marrow cavity
All of these are correct
17428.Chemical ions responsible for muscle contraction are
Na+ and Ca2+
Na+ and K+
Ca2+ and K+
Ca2+ and Mg2+
17429.In hurdle race, what is the major energy source of the leg muscle?
Performed ATP
Glycolysis
Pyruvate and lactate
Oxidative metabolism
17430.Which one of the followings stands incorrect regarding skeletal muscle?
Responsible for voluntary movement
Contract and expand slowly
Cell fibers have multiple nuclei
Stimulated by central nervous system
17431.Yellow bone marrow, in the medullary cavity of the diaphysis is primarily ______.
Collagen fibers, made of protein
Bone-forming and bone-absorbing cells
Fat that can be utilized for energy
None of these