section 4 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
SECTION 4 PowerPoint Presentation
Download Presentation
SECTION 4

Loading in 2 Seconds...

play fullscreen
1 / 57

SECTION 4 - PowerPoint PPT Presentation


  • 81 Views
  • Uploaded on

SECTION 4. TISSUES. BODY TISSUES. GROUPS OF CELLS THAT ARE SIMILAR IN STRUCTURE AND FUNCTION 4 PRIMARY TYPES: COVERING (EPITHELIAL) SUPPORT (CONNECTIVE) MOVEMENT (MUSCLE) CONTROL (NERVOUS). EPITHELIAL TISSUE. PG. 78 PROTECT, ABSORB, FILTER, SECRETE TYPES: GLANDULAR – COVERS GLANDS

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'SECTION 4' - mervyn


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
section 4

SECTION 4

TISSUES

body tissues
BODY TISSUES
  • GROUPS OF CELLS THAT ARE SIMILAR IN STRUCTURE AND FUNCTION
  • 4 PRIMARY TYPES:
    • COVERING (EPITHELIAL)
    • SUPPORT (CONNECTIVE)
    • MOVEMENT (MUSCLE)
    • CONTROL (NERVOUS)
epithelial tissue
EPITHELIAL TISSUE

PG. 78

PROTECT, ABSORB, FILTER, SECRETE

TYPES:

GLANDULAR – COVERS GLANDS

COVERING – FORMS OUTER LAYERS

LINING – LINE CAVITIES

epithelium characteristics
EPITHELIUM CHARACTERISTICS

FIT CLOSELY TO FORM CONTINUOUS SHEETS

ALWAYS HAVE 1 FREE END (APICAL)

LOWER SURFACE RESTS ON A BASEMENT MEMBRANE

NO BLOOD SUPPLY (AVASCULAR)

REGENERATE THEMSELVES

epithelium classification
EPITHELIUM CLASSIFICATION

EACH EPITHELIUM HAS 2 NAMES:

  • INDICATES THE # OF CELL LAYERS

- SIMPLE – 1 LAYER

- STRATIFIED – MORE THAN ONE LAYER

  • DESCRIBES THE SHAPE

- SQUAMOUS - FLATTENED

-CUBOIDAL – CUBES, LIKE DICE

-COLUMNAR - COLUMNS

simple epithelium
SIMPLE EPITHELIUM

ABSORPTION, SECRETION, FILTRATION

VERY THIN – NOT VERY PROTECTIVE

simple squamous epithelium
SIMPLE SQUAMOUS EPITHELIUM

SINGLE LAYER OF SQUAMOUS CELLS

REST ON A BASEMENT MEMBRANE

FIT LIKE FLOOR TILES

FORMS MEMBRANES WHERE FILTRATION/SUBSTANCES EXCHANGE BY DIFFUSION

simple cuboidal epithelium
SIMPLE CUBOIDAL EPITHELIUM

ONE LAYER OF CUBOIDAL CELLS

REST ON BASEMENT MEMBRANE

GLANDS AND DUCTS (SALIVARY, PANCREAS, KIDNEY TUBULES)

simple columnar epithelium
SIMPLE COLUMNAR EPITHELIUM

SINGLE LAYER OF TALL CELLS FITTING CLOSELY TOGETHER

GOBLET CELLS – PRODUCE MUCUS

LINE THE DIGESTIVE TRACT FROM STOMACH TO ANUS

pseudo stratified columnar epithelium
PSEUDO STRATIFIEDCOLUMNAR EPITHELIUM

ALL REST ON A BASEMENT MEMBRANE

SOME CELLS ARE SHORTER THAN OTHERS

GIVES A FALSE (PSEUDO) IMPRESSION THAT IT IS STRATIFIED

RESPIRATORY TRACT

stratifiedepithelium
STRATIFIEDEPITHELIUM

2 OR MORE CELL LAYERS

MORE DURABLE THAN SIMPLE EPITHELIA

PRIMARY FUNCTION – TO PROTECT

stratifiedepithelium1
STRATIFIEDEPITHELIUM
  • STRATIFIED SQUAMOUS
    • MOST COMMON EPITHELIAL TISSUE
    • FREE EDGE = SQUAMOUS; BASEMENT = CUBOIDAL/COLUMNAR
    • TAKE ABUSE/FRICTION
    • ESOPHAGUS, MOUTH, OUTER SKIN
stratified cuboidal stratified columnar
STRATIFIED CUBOIDAL & STRATIFIED COLUMNAR-

UNCOMMON TISSUE TYPE

PANCREAS, SALIVARY, SWEAT GLANDS

transitional epithelium
TRANSITIONAL EPITHELIUM
  • HIGHLY, MODIFIED STRATIFIED SQUAMOUS
    • TRANSITIONAL EPITHELIUM – HIGHLY MODIFIED STRATIFIED SQUAMOUS; ONLY IN BLADDER, URETERS, URETHRA
    • MUST BE ABLE TO STRETCH
glandular epithelium
GLANDULAR EPITHELIUM

GLAND – CELLS THAT SECRETE

SECRETION – PRODUCT SECRETED

GLANDULAR CELLS OBTAIN NEEDED MATERIAL FROM BLOOD & USE IT TO MAKE THE SECRETION & DISCHARGE

types of glandular epithelium
TYPES OF GLANDULAR EPITHELIUM
  • ENDOCRINE GLANDS-SECRETE DIRECTLY TO BLOODSTREAM (THYROID, ADRENAL)
  • EXOCRINE GLANDS – EMPTY SECRETIONS TO THE SURFACE (SWEAT, OIL)
    • BOTH DEVELOP FROM EPITHELIAL SHEETS
epithelial tissue1
EPITHELIAL TISSUE

PSEUDOSTRATIFIED COLUMNAR

  • SIMPLE
    • SINGLE LAYER
  • SQUAMOUS
  • CUBOIDAL
  • COLUMNAR
  • STRATIFIED
    • MORE THAN 1 LAYER
  • SQUAMOUS
  • CUBOIDAL
  • COLUMNAR
connective tissue
CONNECTIVE TISSUE

MOST ABUNDANT & WIDELY DISTRIBUTED TISSUE

CONNECTS BODY PARTS

connective characteristics
CONNECTIVE CHARACTERISTICS

MOST ARE VASCULAR; TENDONS/LIGAMENTS HAVE POOR BLOOD SUPPLY

MADE UP OF DIFFERENT TYPES OF CELLS (EXTRACELLULAR MATRIX)

PG. 82

connective types
CONNECTIVE TYPES
  • BONE
  • CARTILAGE
  • DENSE CONNECTIVE TISSUE
    • TENDONS & LIGAMENTS
  • LOOSE CONNECTIVE TISSUE
    • AREOLAR, ADIPOSE, & RETICULAR
  • BLOOD
slide28
BONE

OSSEOUS TISSUE

BONE CELLS SITTING IN CAVITIES CALLED LACUNAE;

SURROUNDED BY VERY HARD MATRIX OF CALCIUM SALTS AND COLLAGEN FIBERS

PROTECT & SUPPORT BODY ORGANS

cartilage
CARTILAGE
  • LESS HARD & MORE FLEXIBLE THAN BONE
  • HYALINE CARTILAGE
    • LARYNX, RIBS TO BREASTBONE, END OF BONES
  • FIBROCARTILAGE
    • DISKS B/T VERTEBRAE IN THE SPINE
  • ELASTIC CARTILAGE
    • EXTERNAL EAR
cartilage1
CARTILAGE

HYALINE

ELASTIC

FIBROCARTILAGE

dense connective tissue
DENSE CONNECTIVE TISSUE
  • TENDONS
    • ATTACH MUSCLES TO BONES
  • LIGAMENTS
    • CONNECTS BONE TO BONE AT JOINTS
    • MORE STRETCHY THAN TENDONS
dense connective tissue1
DENSE CONNECTIVE TISSUE

LIGAMENTS OF KNEE

TENDON

loose connective tissue
LOOSE CONNECTIVE TISSUE

SOFTER AND HAVE MORE CELLS AND FEWER FIBERS THAN ALL OTHER CONNECTIVE TISSUE EXCEPT BLOOD

AREOLAR TISSUE

ADIPOSE TISSUE

RETICULAR CONNECTIVE TISSUE

areolar tissue
AREOLAR TISSUE

SOFT, PLIABLE, “COBWEBBY”

“GLUE” BC IT HELPS HOLD INTERNAL TISSUE TOGETHER

APPEARS AS EMPTY SPACE

INFLAMMATION CAUSES EDEMA BC THE AREOLAR TISSUE TAKES UP FLUID

adipose tissue
ADIPOSE TISSUE

FAT

AREOLAR TISSUE IN WHICH FAT CELLS DOMINATE

FORMS BELOW THE SKIN SURFACE

INSULATES AND PROTECTS

reticular tissue
RETICULAR TISSUE

FORMS THE STROMA (BED/MATTRESS) OR INTERNAL SUPPORT FOR FREE BLOOD CELLS IN LYMPH NODES, SPLEEN AND BONE MARROW

blood
BLOOD

VASCULAR TISSUE

CONSIDERED A CONNECTIVE TISSUE

BLOOD CELLS SURROUNDED BY BLOOD PLASMA (NON-LIVING)

TRANSPORT FOR CARDIOVASCULAR SYSTEM

MORE IN CH. 10

muscle tissue
MUSCLE TISSUE

SPECIALIZED TISSUE TO CONTRACT (SHORTEN) TO PRODUCE MOVEMENT

ELONGATED CELLS – CALLED FIBERS

types of muscle tissue
TYPES OF MUSCLE TISSUE

SKELETAL

SMOOTH

CARDIAC

skeletal muscle
SKELETAL MUSCLE
  • SKELETAL
    • ATTACH TO THE SKELETON
    • VOLUNTARY
    • MULTINUCLEATED
    • ARE STRIATED

(STRIPES)

smooth muscle
SMOOTH MUSCLE

SMOOTH –

INVOLUNTARY

MUSCULAR CONTROL

WALLS OF HOLLOW

ORGANS (STOMACH,

BLADDER, UTERUS…)

cardiac muscle
CARDIAC MUSCLE
  • CARDIAC
    • FOUND ONLY IN THE HEART
    • STRIATIONS
    • INTERCALATED DISKS
      • JUNCTIONS B/T CELLS
nervous tissue
NERVOUS TISSUE

MADE OF NEURONS

RECEIVE & CONDUCT ELECTRICAL IMPULSES

IRRITABLITY & CONDUCTIVITY ARE FUNCTIONAL CHARACTERISTICS

nervous tissue1
NERVOUS TISSUE
  • NEURON:
    • AXON
    • DENDRITE
    • MYELIN SHEATH DRAW
    • NODE OF RANVIER &
    • SCHWANN CELLS LABEL
    • CELL BODY
    • NUCLEUS
nervous tissue2
NERVOUS TISSUE
  • NEURONS W/ SUPPORTING CELLS:
    • INSULATE
    • SUPPORT
    • PROTECT

THE DELICATE STRUCTURES

tissue repair
TISSUE REPAIR

INFLAMMATORY & IMMUNE RESPONSE IS INITIATED

HEALING PROCESS BEGINS

INFLAMMATION-TO PREVENT FURTHER INJURY

IMMUNE-ATTACKS INVADERS

tissue repair1
TISSUE REPAIR
  • REGENERATION
    • REPLACEMENT OF DESTROYED TISSUE BY THE SAME KINDS OF CELLS
  • FIBROSIS
    • REPAIR BY DENSE CONNECTIVE TISSUE, FORMS SCAR TISSUE

*DEPENDS ON TYPE OF TISSUE DAMAGED AND SEVERITY

development of cells tissues
DEVELOPMENT OF CELLS & TISSUES

CELLS SPECIALIZE IN EMBRYONIC DEVELOPMENT

CELL & TISSUE AGING

NEOPLASM-CELLS FAIL TO ABIDE BY NORMAL CONTROLS & MULTIPLY WILDLY CREATING AN ABNORMAL MASS OF CELLS