10 Questions
What is the primary function of flagellar movement?
Aiding in spermatozoa swimming
What is a key characteristic of visceral muscles?
Smooth appearance
What are the special properties of muscles?
Excitability, contractility, extensibility, elasticity
Which type of muscle is closely associated with the skeletal components of the body?
Skeletal muscles
Why are skeletal muscles also known as voluntary muscles?
Because their activities are under voluntary control
In which type of muscle are activities not under voluntary control of the nervous system?
Visceral muscles
What is the appearance of smooth muscles under a microscope?
Smooth appearance
What is the origin of muscle tissue?
Mesodermal
What is the primary function of skeletal muscles?
Locomotory actions and changes of body postures
What distinguishes cardiac muscles from skeletal and smooth muscles?
Their involuntary nature
Study Notes
Cell Projections
- Cilia and flagella are outgrowths of the cell membrane
- Flagellar movement helps in:
- Swimming of spermatozoa
- Maintenance of water current in the canal system of sponges
- Locomotion of Protozoans like Euglena
Muscle Tissue
- Originates from mesoderm
- Comprises 40-50% of adult human body weight
- Special properties:
- Excitability
- Contractility
- Extensibility
- Elasticity
Classification of Muscles
- Based on location:
- Skeletal muscles
- Visceral muscles
- Cardiac muscles
Skeletal Muscles
- Associated with skeletal components of the body
- Striped appearance under microscope (striated muscles)
- Voluntary muscles (under nervous system control)
- Involved in:
- Locomotory actions
- Changes of body postures
Visceral Muscles
- Located in inner walls of hollow visceral organs (e.g. alimentary canal, reproductive tract)
- Smooth appearance (non-striated muscle)
- Involuntary muscles (not under nervous system control)
Test your knowledge on the topics of cilia, flagella, and muscles. Learn about the functions of cilia and flagella in various organisms, as well as the unique properties of muscle tissues.
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