Animal Tissues Flashcards
Squamous Epithelium Structure, Location and Function?
Structure: flat, large, thin (mosaic)
Large nucleus and tessellated
Found: Surface of skin, alveoli of lungs, lines mouth, esophagus, vagina and blood vessels
Function: Protect underlying tissue, allow gaseous exchange and prevent friction in blood vessels
Squamous Epithelium Diagram(4)?
Cell membrane
nucleus
basement membrane
cytoplasm
Cuboidal Epithelium Structure, Location and Function?
Structure: Cuboidal shape
Found: Glands and kidney tubules
Function: secret hormones and absorptive function
Cuboidal Epithelium Diagram(3)?
cell membrane
nucleus
basement membrane
Columnar Epithelium Structure, Location and Function?
Structure: column shaped with nucleus at base
Found: lines intestines
Function: Sensory function, aid digestion(microvilli in small intestine) and support other cells
Columnar Epithelium Diagram(5)?
Nucleus
cell membrane
goblet cell
mucous
microvilli
Ciliated Epithelium Structure, Location and Function?
Structure: Columnar with cilia on free edges
Found: Respiratory passages and fallopian tubes
Function: Cilia remove dust from mucous in goblet
cilia move ovum down fallopian tube to uterus
Ciliated Epithelium Diagram(7)?
Cilia
nucleus
basement membrane
cell membrane
connective tissue
mucous
goblet cell
Stratified Epithelium Structure, Location and Function?
Structure: Cuboidal at bottom, dead stratified at top
Found: skin (contain melanin)
Function: protect underlying tissue
What is Goblet cell?
Cup shaped cell that secretes protective mucous in digestive, respiratory and reproductive tracts.
What is matrix?
non living ground substance with cells and fibers imbedded
Areolar connective tissue Structure, Location and Function?
Structure:
jelly like matrix
white inelastic fibers (parallel)
yellow elastic fibers branched
Cells: fibroblast: Star shape- secrete fibers
mast cells: secrete matrix
macrophage: White blood cell that kills bacteria
Adipose sites: store fat: adipose connective tissue
Location: binds skin to underlying muscle
binds muscle, blood vessel layers, organs and nerve fibres.
Functions: packing material in organs
prevents heat loss and energy storage
Dense connective tissue vs Areolar connective tissue difference?
Dense has More fibers imbedded in matrix
White Fibrous known as?
Tendons
Yellow elastic known as?
Ligaments
White fibrous Structure and Functions?
Structure: white inelastic collagen fibers parallel
bend but cannot stretch
Function: Connects bone to muscle (relays muscle contraction and relax to bone for movement
Yellow Elastic structure and functions?
Structure: irregular yellow elastic fibers branched
stretch slightly (expand arteries)
Function: Connects bone to bone: joint movements
what is cartilage matrix made by?
Chondrocytes
General Characteristic of cartilage?(4)
- temporary cartilage is ossified into bone in embryo
- cells produce rubbery protein matrix called chondrin
- perichondrium surrounds and protects chondrocytes
- takes long to repair as has no blood vessels or nerves
Define ossification?
bone tissue replacing cartilage by the deposition of calcium salts
Hyaline cartilage structure, function, location and diagram(3)?
structure: no fibers= strong and flexible
Chondrocytes in lacunae
semi transparent
found: trachea, larynx, between bones, tip of nose, between ribs and sternum
Function: keeps trachea open, longitudinal growth of bones, reduce friction, movement.
diagram: chondrocyte in lacunae, chondrin, nucleus
white fibro cartilage structure, function, location and diagram(4)?
structure: collagen fibers parallel
Strongest cartilage
found: intervertebral discs, between pubis, articulating cavities
Function: absorb shock, sturdiness, deepens sockets for less dislocation
diagram: chondrocyte in lacunae, chondrin, nucleus, white collagen fibers
elastic cartilage structure, function, location and diagram(4)?
structure: yellow elastic fibers branched
found: epiglottis and ear lobe
Function: gives shape and flex to organs
strength and supports tissue
diagram: chondrocyte in lacunae, chondrin, nucleus, yellow elastic fibers
Why is bone flexible?
mostly collagen fibers= flexible