Locomotion and Movement — Class 11 CBSE Biology revision notes
A 4-page visual revision sheet for Locomotion and Movement, written for Class 11 CBSE Biology. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.
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Locomotion and Movement in one look
every movement in the body is one of three types, and locomotion is only the one that changes place
Movement is broader than locomotion
movement is any change in the position of a part of the body, or of the whole body
locomotion is specifically movement that changes the animal's location, walking, running, swimming or flying
every locomotory movement is a movement, but not every movement is locomotory, a beating heart moves without going anywhere
Three types of movement
Amoeboid: by pseudopodia, seen in some WBCs (leucocytes) and in Amoeba, powered by actin and myosin proteins
Ciliary: coordinated beating of cilia, moves either fluid over a fixed cell or the cell itself; lines the trachea and the fallopian tube
Muscular: by contraction of muscle, the type behind body locomotion, chewing, breathing movements and pretty much everything visible
Skeletal muscle structure
made of long, cylindrical, unbranched, striated fibres, each fibre a syncytium with many nuclei
each fibre contains many myofibrils, and each myofibril is a repeating chain of sarcomeres, the actual contractile unit
a sarcomere alternates thick filaments (myosin) and thin filaments (actin), giving the alternating light and dark bands seen under a microscope
Skeletal vs Cardiac muscle
Skeletal
voluntary, under conscious control
fibres are unbranched, multinucleate
Cardiac
involuntary, keeps its own rhythm without conscious input
fibres are branched, joined end to end by intercalated discs
Page 1 of 4. The full sheet, all 4 pages, opens free in the app.
These notes are not a standalone PDF. CapCompass plans Biology chapter by chapter against your real exam dates and free hours, and when the plan reaches Locomotion and Movement the sheet opens inside the study block itself — at the page covering the sub-topic that block is on, with the timer still running. Revision arrives at the moment the plan says revise, instead of having to be gone looking for.