Lecture 5: Muscle Tissue Flashcards
Muscle is a basic tissue characterised for its ability to ___ and ___ of impulses that aid contraction.
Contraction, transmission.
Muscle is always associated with ___ tissue and almost always associated with ___ tissue.
Connective, nervous.
Muscle is derived from which embryological layer?
The mesoderm.
What are the two categories of muscle?
Striated and smooth.
What are the characteristics of striated muscle?
Skeletal/cardiac muscle that is voluntary.
What are the characteristics of smooth muscle?
Visceral or involuntary muscle that is found in internal organs mainly.
What are the contributing components to contraction?
Actin and myosin.
Where is the force of contraction transmitted through?
The connective tissue.
Why do muscles have regeneration and repair problems?
They are highly specialised cells that cannot divide.
Some regeneration can occur in skeletal muscles through what structure?
Myoblasts.
Can cardiac and smooth muscle regenerate?
No.
Control of muscle is monitored through which system?
The central nervous system.
What type of muscle fibres are these (striate with long fibres)? Insert picture from ppt. pg. 20
Skeletal muscle.
Based on nomenclature; what are the levels of muscle from largest to smallest structures?
- Myofibers
- Myofibrils
- Myofilaments
- Sarcomeres (unit for contraction)
What type of muscle is this (striated, branched and mononucleate)? Insert picture from ppt. pg.29
Cardiac muscle.
