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Locomotion & Movement PPT Biology Class 11

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 Page 1


LOCOMOTION AND MOVEMENT
Page 2


LOCOMOTION AND MOVEMENT
Deleted portions
• Types of movement
• Skeletal System & its functions
• joints
• Disorders of muscular & skeletal system
Page 3


LOCOMOTION AND MOVEMENT
Deleted portions
• Types of movement
• Skeletal System & its functions
• joints
• Disorders of muscular & skeletal system
MUSCLES 
• Properties of Muscle :
• Excitability
• Contractility
• Extensibility
• Elasticity
Page 4


LOCOMOTION AND MOVEMENT
Deleted portions
• Types of movement
• Skeletal System & its functions
• joints
• Disorders of muscular & skeletal system
MUSCLES 
• Properties of Muscle :
• Excitability
• Contractility
• Extensibility
• Elasticity
Types of Muscles :
Skeletal muscles or striated 
muscles
Closely associated with skeleton.
They are striped appearance under 
the microscope and 
called Striated muscles.
They are under voluntary control 
of nervous system, hence called 
voluntary muscles.
These involved in locomotion and 
change of body postures.
Unbranched and multinucleated.
Page 5


LOCOMOTION AND MOVEMENT
Deleted portions
• Types of movement
• Skeletal System & its functions
• joints
• Disorders of muscular & skeletal system
MUSCLES 
• Properties of Muscle :
• Excitability
• Contractility
• Extensibility
• Elasticity
Types of Muscles :
Skeletal muscles or striated 
muscles
Closely associated with skeleton.
They are striped appearance under 
the microscope and 
called Striated muscles.
They are under voluntary control 
of nervous system, hence called 
voluntary muscles.
These involved in locomotion and 
change of body postures.
Unbranched and multinucleated.
Types of Muscle
• Visceral muscles or smooth muscles
• These are located in inner wall of 
hollow visceral organ.
• Spindle shaped and uni-nucleated.
• They do not exhibit any striation and 
are smooth in appearance.
• They are called smooth muscles or 
non-striated muscles.
• Their activities are not under voluntary 
control of nervous system hence called 
as involuntary muscles.
• They assist in transport of food through 
digestive tract and gametes through 
the genital tract.
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FAQs on Locomotion & Movement PPT Biology Class 11

1. What is locomotion?
Ans. Locomotion refers to the ability of an organism to move from one place to another. It involves the coordination of various body parts and systems to facilitate movement.
2. How do muscles contribute to movement?
Ans. Muscles play a crucial role in locomotion and movement. They contract and relax, causing movement by pulling on the bones of the skeleton. This contraction and relaxation of muscles allow for the flexibility and control needed for various types of movements.
3. What are the different types of locomotion in animals?
Ans. Animals exhibit various forms of locomotion depending on their characteristics and environments. Some common types of locomotion include walking, running, crawling, swimming, flying, and hopping. Each type of locomotion is adapted to suit the specific needs and abilities of the animal.
4. How do joints contribute to movement?
Ans. Joints are the points where two or more bones meet. They provide the necessary flexibility and range of motion for movement. Different types of joints, such as pivot joints, hinge joints, and ball-and-socket joints, allow for different types of movements like rotation, bending, and extension.
5. What is the role of the nervous system in coordinating movement?
Ans. The nervous system plays a vital role in coordinating movement. It receives sensory information from the environment and sends signals to the muscles, enabling them to contract and relax in a coordinated manner. The brain and spinal cord are particularly involved in the control and coordination of complex movements.
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