Histology - Muscle and Nervous Tissues Flashcards
Muscle Tissues
3 Types of Muscle Tissues
Smooth Muscle
Skeletal Muscle
Cardiac Muscle
Muscle Tissues
What is the general structure of Muscle Tissues?
Long and Narrow Fibers
Muscle Tissues
How do muscle tissues function?
Through contraction in motion, posture, and heat production
Muscle Tissues
How do you identify Muscle Tissue
Skeletal: Multinucleated
Smooth: Non-striated
Cardiac: Branched
[bifurcated and intercalated disks]
Identify
Smooth Muscle Tissue
Muscle Tissue
What is the structure of Smooth Muscle Tissue?
Fusiform (spindle-shaped)
Short
Contain one centrally located nucleus
Muscle Tissue
What is the function of Smooth Muscle Tissue?
Involuntary movements and motion
Moves materials through internal organs
Muscle Tissue
Where is Smooth Muscle Tissue found?
Walls of hollow internal organs:
- Vessels
- Airways
- Stomach
- Bladder
- Uterus
Identify
Skeletal Muscle
Muscle Tissue
What is the structure of Skeletal Muscle?
Long fibers
Cylindrical
Striated
Parallel
Multinucleated w/nuclei along periphery
Muscle Tissue
What is the function of Skeletal Muscle?
Moves skeleton
Voluntary movements
Heat production
Muscle Tissue
Where is Skeletal Muscle located?
Attached to bones or skin
Also found in voluntary sphncters (lips, urethra, anus)
Identify
Cardiac Muscle
Muscle Tissue
What is the structure of Cardiac Muscle?
Short
Bifurcated
Striated
centrally located nuclei
intercalated disks
Muscle Tissue
What is the function of Cardiac Muscle?
Involuntary contraction and relaxation
pumps blood in the heart