Histology Of Muscle Tissues Flashcards
What are Muscle Tissues
Muscle tissues are specialized cells that shorten in length by contraction resulting in movement
What is the origin of Myocytes
They are Mesodermal in origin
What are Myocytes
Myocytes are the cells that make up Muscle Tissues
Muscle Fibres
Elongated Myocytes in one direction
Muscle fibers contain?
Contractile protein
Myosin
What organelles make up part of the Muscle Tissues
Sarcolemma
Sarcoplasmic reticulum
Sarcosome
Characteristics of Muscle tissue are?
Contractibility
Excitability
Extensibility
Elasticity
Functions of the Muscle tissues
- Movement - skeletal muscle
- Stability - skeletal muscle
- Communication - skeletal muscle
- Control of body opening & passages - skeletal & smooth
- Heat production
Skeletal muscle fibers when viewed under the microscope show
Prominent Transverse striations
Fibres of the skeletal muscle are
Long and parallel without branching, with flat and peripheral placed nuclei
The skeletal muscle are supplied by
Somatic nerves
The nuclei of smooth muscles are
Oval and Centrally placed
Cardiac muscles resembles
Smooth muscles in being involuntary
It also resemble striated muscles - the fibres of cardiac muscles show transverse striation
Cardiac muscles are supplied by
Autonomic nerves
Cardiac muscles have a ——- nuclei
Centrally placeed