Lesson 8 Flashcards
what are the Three Types of Muscle Tissue
skeletal, cardiac, smooth muscle
where is smooth muscle found?
Found in walls of visceral organs
where is cardiac muscle?
Found in heart myocardium
where is skeletal muscle found
attached to skeleton
Properties of
Muscle Tissue
- Excitability
- Contractility
- Elasticity
- Extensibility
What is the cell shape of skeletal muscle cells
Fiber-like (long
and cylindrical)
What is the cell shape of cardiac muscle cells?
Branched and
Y-shaped
What is the cell shape of smooth muscle cells?
Fusiform
T/F Smooth and cardiac muscles are striated while skeletal muscles are not striated T/F
False
Smooth muscles are striated T/F
False
cardiac and skeletal muscles are Striated T/F
True
How many nuclei are in cardiac muscle cells
1-2; Uni- or binucleated
How many nuclei are in smooth muscle cells
1; Uninucleated
How many nuclei are in skeletal muscle cells
2+; Multinucleated
Which two muscle types are moved involuntarily
Smooth and cardiac muscle
Special
Features of Cardiac muscle cells
Intercalated
discs, autorhythmic
Special
Features of Skeletal muscle cells
Innervated at the
neuromuscular
junction, vascular
Special
Features of smooth muscle cells
Fatigue resistant
Functions of
Skeletal Muscle
- Movement
- Maintenance of posture
- Temperature regulation
- Storage and movement
of materials - Support abdominal
organs - Joint stabilization
The ability of muscle cell membranes to change their electrical state and send an electrical wave or impulse (called an action potential) along the length of the membrane is called __________.
A.
excitability
B.
contractility
C.
elasticity
D.
extensibility
A
