– A neurotransmitter found throughout the nervous system.
– A protein found in the cytoskeleton and muscle cells; it is the principal
constituent of the thin filament.
triphosphate(ATP) – A nucleotide molecule consisting of
adenine, riboseand three phosphate molecules. It plays a central role in energy
exchange in biological systems.
A firm, elastic connective tissue produced by the cells,called chondrocytes.
– Skeletal elements are located upon body surface or in the skin (Example:
Shells of snails in inverbrates, Hair claw and nails in vertibrates.
– Skeletal elements are located inside the organisms with muscles outside.
Found in skeletal system of vertibrates
– Movement takes place along the joints which act as fulcrum of the lever. One
can observe functioning of all the three types of levers in the human skeleton.
The middle embryonic germ layer. It gives rise to the muscular, skeletal, urogenital
and circulatory system.
Motor neuron –
A motor neuron that transmits nervous impulses from the spinal cord to
– Heme containing protein that binds molecular oxygen in muscle cells.
– A protein found in muscle cells that function in muscle contaction. It is
present in thick filaments of muscles, known as myosin fibres
– Muscle cell membrane capable of propagating action potentials
– The functional contractile unit of striated muscle.
reticulum – The endoplasmic reticulum of a muscle cell. It envelopes
– A fibrous connective tissue that connects a bone to a muscle