Tissue Flashcards
What are collections of specialized cells and cell products that perform specific functions
Tissue
What is the study of the structure of tissues
Histology
How many basic types of tissues are there? And what are the types
4.
Epithelial
Connective
Muscle
Nervous
What type of tissue covers exposed surfaces, lines internal passageways, and forms glands?
Epithelial tissue
What type of tissue fills internal spaces, supports other tissues, transports material, and stores energy?
Connective tissue
WHat tissue specialized for contraction
Muscle Tissue
What type of tissue carries electrical signals from one part of the body to another
Nervous tissue
What does Epithelial tissue include?
Epithelial and glands
What is epithelia
Layers of cells covering internal or external surfaces
Surface of the skin, longing of the digestive, respiratory and reproductive tracts, inner surface of blood vessels and the heart are examples of what ?
Epithelial tissue
What are structure that produce fluid secretion?
Glands
Epithelial tissue protects external and internal surfaces from abrasion, dehydration and chemical and biological agents for what reason?
Provide physical protection
Epithelial tissue substances that Exeter or leave the body must cross an epithelium for what reason?
To control permeability
Epithelial tissue contains sensory receptors for touch, smell , taste, vision, equilibrium, hearing, etc for what reason ?
To provide sensation
Epithelial tissue gland cells discharge secretions onto the surface of the epithelium for lubrication, protection, or temperature regulation or inside the body of cell communication is for what reason?
Produce specialized secretions
What are the 4 functions of epithelial tissue.
- Provide physical protection
- Control permeability
- Provide sensation
- Produce specialized secretions
What is the differences between the exposed surface and the attached surface?
Polarity
What is epithelial cells are tightly bound by a cell junction
cellularity
What means the base of epithelium is bound to a noncellular basement membrane
Attachment
What does no blood vessels mean
avasculatity
What is continuously replaced by division of stem cells
regeneration
What increases the surface area for absorption or secretion
Microvilli
What moves fluids
cilia
What is transmembrane proteins that attach opposing plasma membrane and plasma membranes to the extra cellular matrix
cell adhesion molecules
What are the types of junctions
Gap junction
Tight junction
Desmosomes
What hold cells together by interlocking transmembrane protiens(connexibs) and allow the passage of small molecules and ions between cels
Gap Junction
What interlocking membrane protiens that bind plasma membranes
tight junction
Wha is a passageway surrounded by cells
Lumen
CAMS and proteglycans link opposing plasma membranes is what
Desmosomes
What is the dense are of each Desmosomes connected to
cytoskeleton
What are small discs that stabilize the shape of the cell
Spot Desmosomes
What looks like half a spot desmosome and anchor cells to the basement membrane
hemidesmosomes
Armorphous layer closest to the epithelium and acts as a selective filter
basal lamina
Deeper portion of basement membrane
reticular lamina
How are epithelial cells replaced
by continual division of stem cells located near basement membrane
What is used for absorption and diffusing an example us lining of lung alveoli
simple squamous epithelia
What lines body cavities
mesothelium
lining of heart and blood vessels
endothelium
what is used for absorption and secretion, found in the stomach, small ingestion, large intestine
simple columnar epithelium
What appears layered but is only one layer, cells typically have cilia, found in lining of nasal cavity
Pseudostratfied columnar epithelium
Relatively rare, provides protection in pharynx, anus, and urethra
Stratified columnar epithelium
Release hormones that enter the bloodstream, no ducts
Endocrine glands
Produce secretions onto epithelial surfaces , through ducts
exocrine glands
Product released by secretory vesicles
Merocrine secretion
Product released by shedding cytoplasm
apocrine secretion
Product released by cells bursting and dying
holocrine secretion
TISSUE specialized for contraction and movement
Muscle tissue
Makes up the large muscles responsible for body movement
Skeletal muscle
Found only in the heart
cardiac muscle
Found in walls of hollow, contracting organs
Smooth muscle
Long, thin, multinucleate cells
muscle fibers
Specialized for conduction electrical impulses
nervous tissue
Supporting cells
neuroglia
Contains the nucleus and nucleolus and organelles
Cell body
short branches extending from the cell body
Dendrites
