Describe The Three Types Of Muscle Tissue And Their Characteristics Flashcards
What is the Myofilaments in muscles responsible for?
These are responsible for the muscles ability to move or contract.
What does Myofilaments do?
This moves body parts.
How do Myofilaments contract?
They contract their elongated muscle fibres.
What are voluntary muscle tissues?
The skeletal muscle is a voluntary muscle tissue. As found in muscles that move by conscious thought.
What does skeletal muscle tissue connect too?
It attaches to bones and is composed of long thread like cells.
How do these cells/ muscles contract?
These cells contract when stimulated by nerve cells.
What can skeletal muscle tissue move?
They move the head, trunk, limbs allowing voluntary movement.
What other name can be given to skeletal muscle cells?
They are also known as muscle fibres.
What appearance do skeletal muscles take on?
They appear long, cylindrical and contain a peripherally located nuclei.
Can smooth muscle tissue be controlled consciously?
No. Smooth muscle tissue generally can not be controlled consciously.
What are smooth muscle tissues composed of?
Smooth muscles are composed of elongated spindle shaped cells.
How many nuclei does a smooth muscle cell have?
One nucleus.
What other names can be given to smooth muscle tissues?
- nonstriated involuntary muscles
- unstriated muscles.
What occurs if a smooth muscle divides?
Smooth muscles can divide so the muscle can regenerate after injury.
Where are smooth muscle tissues used?
They are used in hollow internal organ walls.
Where can smooth muscles be found?
- intestines
- stomach
- urinary bladder
- blood vessels
- uterus
What function do smooth muscles have in these areas?
- Moves food through through the digestive tract
- empties urinary bladder
- constricts blood vessels
How does smooth muscle tissues carry out its functions?
The smooth muscle tissue carries out its functions by contracting and relaxing.
What is the cardiac muscle tissue called?
The myocardium.
Where is the myocardium located?
The myocardium is the thick contractile middle layer of the heart wall.
What is the myocardium or cardiac muscle tissue composed of?
Composed of fibres with characteristic cross - striations of muscular tissue.
- These striations branch frequently and are interconnected forming a network.
How does the myocardial muscle compare with skeletal muscles?
The myocardial muscle has less connective tissue.
Does the myocardial tissue have a nuclei?
The myocardial tissue does not have a central nucleus.
What is the ratio of cardiac muscle tissue in comparison of the rest of the heart?
The myocardial muscle makes up most of the heart.
How does the myocardial muscle contract?
The myocardial muscle relies on the pacemaker cells for regular contractions.
