Muscle & Epithelium tissue Flashcards
Muscle Tissue:
A.
B.
C.
Voluntary- under our control
Skeletal muscles- “meat”
*striated
Smooth muscle- involuntary muscle
*long patches/ nuclei
Cardiac muscle- wall of the heart
Allows electrochemical impulses to be conveyed across the tissue
*striated & has intercalated disks
Nerve tissue
Found?
A.
B.
In brain, spinal cords & nerves
A. Neuron tissue- transmit signals, electrochemical communication
B. Glial cells- protection, support, immunity
Tissue-
Collection of cells and extracellular materials that perform specific functions
4 major types of tissue-
Epithelium
Nervous
Connection
Muscle
Epithelial tissue characteristic
- Found throughout The body covers all body services both inside and out
- main glandular tissue (secretion)
- attached to underlying connective tissue by noncellular nonliving basement membrane
- Usually has good blood supply
- cells reproduce rapidly (rapid healing)
- cells tightly packed together
Function of epithelial tissue
Protect secrete(make something good for body) absorb excrete sensory perception
The 6 specific types of epithelial tissue:
What are they categorized by?
Simple squamous Simple cuboidal Simple columnar Stratified squamous Pseudostritified columnar Transitional epithelial
Simple squamous-
Function?
Found?
Simple squamous- single layer (simple) of very thin, flattened cells (squamous)
Function: quick diffusion & filtration
Found in aid sac of lungs & walls of capillaries
Simple columnar-
Function?
Found?
Single layer, elongated cells with their nuclei about in the same potion (usually near membrane)
Function:
•secrete & absorb
-constrains scatter goblet cells functioning in the secretion of mucus
-some columnar cells (involved in absorption) have tiny finger-like processes from their free surface called cilia
Found in the lining of digestive tract & uterus
Simple cuboidal-
Function?
Found?
Single layer, cube shaped cells.
Function: secretion & absorb
Found in lining of kidney tubules, ducts, covering surface of ovaries
Stratified squamous-
Function?
Found?
Multi-layer squamous (flattened) cells
Function: protection
Found in lining body favorites like the oral cavity, anal of skin canal & vagina
Pseudostritified columnar-
Appear “stratified” but really is single layer with nuclei in diff. positions, uneven giving the appearance of layered cells.
•contains goblet cells
Function: secretion & absorption movement
Found in the lining air passages like the tubes & tubes of the reproductive system
Transitional epithelium-
Thick layered cuboidal cells.
Function: distend & contract, also forms barrier to infection
Found in lining of bladder
SHAPE:
squamous-
Cuboidal-
Columnar-
Flat (used for diffusion)
Square (circle like too)
Column (rectangle)
LAYERING
Single-
More than one-
Simple epi. Tissue
Stratified