Muscle Tissue💪 (incomplete) Flashcards
What % of our body is muscle?
40-50%
How are muscle tissues specialised?
By producing movement by contraction
What are the three types of muscle Tissue?
-SKELETAL
-CARDIAC
-SMOOTH
What muscle tissue facilitates movement of the
a)Body
b)Blood
c)Gases, fluids and solids through our visceral or organs
a) Skeletal
b)Cardiac
c) Smooth
What is voluntary control of muscle tissues mediated by?
somatic motor system via motor neurones
What are motor neurones?
Motor neurones are neurones that can send signals from our brain to our muscles, telling them to contract
What is involuntary control of muscle tissue mediated by?
Autonomic Nervous System
What is the autonomic NS, and what does it control
Control system that acts unconsciously i.e. regulates functions like;
-Heart Rate
-Breathing
-Digestion
All of which involve muscle movement
What is the structure and control of each muscle type?
Muscle Type Control Structure
Skeletal somatic NS Striated
Cardiac autonomic NS Started
Smooth autonomic NS Non-striated
What do striated muscle tissues look like?
Have a striped or banded appearance
What do non-striated muscle tissues look like?
Do not have striped appearance
The striated structure of skeletal muscle is intimately related to what?
The function of this tissue
Where is cardiac muscle found and what is its function?
-Found only in the walls of our heart
-To pump blood around the body
What features does cardiac muscle tissue share with;
a) Smooth Muscle Tissue
b)Skeletal Muscle Tissue
a) Under Involuntary Control by Autonomic Nervous
System
b) Striated Appearance
Why is smooth muscle named as ‘smooth muscle’
Because it doesn’t have this striped appearance and appears smooth shape with tapered ends.
Where can smooth muscle tissue be found?
lining our hollow organs such as our blood vessels, respiratory system, gastrointestinal tract
What is the function of smooth muscle tissue?
to propel the contents of our blood vessels, respiratory system, and gastrointestinal tract, through the organ whether that’s liquid , solids or gases.
What are skeletal muscles specialised for? What are they attached to?
-Contractions that produce movement.
-Attached to skeleton
What is the function of skeletal muscle?
-Voluntary movement of skeleton (controlled by somatic NS)
-Controls Movement of eye/ tongue
-Controls Subconscious movement of contractions required to maintain posture and balance
Cells of skeletal Muscle?
Elongated cyndrical cells (muscle fibres)
-Have multiple peripherally located nuclei (multinucleated cells)
-Cells are huge in comparison with other cells
