DERM ANATOMY AND PHYSIOLOGY Flashcards
WHAT ARE THE 4 TYPES OF HUMAN TISSUE?
MUSCLE
NERVOUS
EPITHEILIAL
CONNECTIVE
4 TYPES OF HUMAN TISSUE:
GENERATES FORCE FOR MOVEMENT
ARRANGED IN BUNDLES
SUPPLIED WITH BLOOD VESSELS
MUSCLE
4 TYPES OF HUMAN TISSUE:
- DETECTS CHANGES INSIDE AND OUTSIDE THE BODY
- INITIATES AND TRANSMITS IMPULSES TO THE BODY TO HELP COORDINATE ACTIVITIES INVOLVED WITH HOMEOSTASIS.
- CONSISTS OF THE CENTRAL AND PERIPHERAL SYSTEMS.
NERVOUS TISSUE
4 TYPES OF HUMAN TISSUE
COMPRISES THE HAIR, SKIN AND NAILS,
MAINLY IN CHARGE OF BEING COVERINGS FOR THE BODY, ORGANS ETC.
EPITHELIAL TISSUE
4 TYPES OF HUMAN TISSUE:
- BINDS ORGANS TOGETHER
- STORES ENERGY RESERVES AS FAT.
- PROVIDES IMMUNITY
CONNECTIVE TISSUES
- PROVIDE CONTACT OR ADHESION BETWEEN NEIGHBORING CELLS AND EXTRACELLULAR MATRIX.
- MAINTAIN PARACELLULAR BARRIER OR EPITHELIA AND CONTROL TRANSPORT OF MATERIALS OR SIGNALS BETWEEN CELLS.
- ENSE IN EPITHELIAL TISSUES BECAUSE THE TISSUE NEEDS TO MAINTAIN STRENGTH AND INTEGRITY.
CELL JUNCTIONS
CELL JUNCTIONS:
FORM BARRIER AGAINS WWATER AND ANTIGENS PASSING BETWEEN EPITHELIAL CELLS.
TIGHT JUNCTIONS
CELL JUNCTIONS:
-CELL TO CELL ADHESION THAT IS CONTINUOUSLY ASSEMBLING AND DISASSEMBLING
ADHERENT JUNCTIONS
CELL JUNCTION:
FORMS A STABLE ADHESIVE JUNCTION BETWEEN CELLS.
DESMOSOMES
CELL JUNCTIONS:
THIS JUNCTION ALLOWS SOME MOLLECULES TO FREELY PASS THROUGH BETWEEN CELLS.
GAP JUNCTIONS
CELL JUNCTIONS:
-FACILITATES THE STABLE ADHESION OF BASAL EPITHELIAL CELLS TO THE UNDERLYING BASEMENT CELLS.
HEMIDESMOSOMES
TWO BROAD CLASSIFICATIONS OF EPITHELIUM TISSUE
COVERING AND LINING
GLANDULAR
EPITHELIAL TISSUE:
- COVERS EXTERNAL SURFACES OF THE BODY AND SOME ORGANS
- LINES CAVITIES, BLOOD VESSELS AND DUCTS.
- LINE THE INSIDE OF VESSELS LIKE G.I. , URINARY AND REPRODUCTIVE ORGANS.
COVERING AND LINING EPITHILEUM.
EPITHELIAL TISSUE:
-SECRETING PORTION OF THE GLANDS, SUCH AS SWEAT GLANDS.
GLANDULAR EPITHELIUM
3 LAYERS OF EPITHELIAL TISSUE
APICAL
BASAL
BASEMENT
3 LAYERS OF EPITHELIAL TISSUE
-MOST SUPERFICIAL LAYER
APICAL LAYER
3 LAYERS OF EPITHELIAL TISSUE
DEEPEST LAYER OF THE CELL
BASAL LAYER
3 LAYERS OF EPITHELIAL TISSUE
THIN EXTRACELLULAR STRUCTURE COMPOSED MOSTLY OF PROTEIN FIBERS
LOCATED BETWEEN THE EPITHELIUM AND UNDERLYING CONNECTIVE LAYER.
BINDS AND SUPPORTS THE EPITHELIUM.
BASEMENT LAYER
2 WAYS EPITHELIAL TISSUE IS CLASSIFIED
BASED OFF OF:
MORPHOLOGY
STRATIFICATION
TYPES OF EPITHELIAL TISSUE:
-SHAPED LIKE FLAT CIRCULAR DISCS (PANCAKES)
SQUAMOUS TISSUE
TYPES OF EPITHELIAL TISSUE:
SHAPED LIKE A CUBE
CUBOID EPITHELIUM
TYPES OF EPITHELIAL TISSUE:
-SHAPED LIKE A COLUMN
COLUMNAR EPITHELIUM
TYPES OF EPITHELIAL TISSUE:
-CHANGES SHAPE
TRANSITIONAL
TYPES OF EPITHELIAL TISSUE:
THIN, FLAT SHAPE ALLOWS RAIPD PASSAGE OF SUBSTANCES THROUGH THEM
KERATINIZED OR NON, DEPENDENT ON LOACATION
FOUND IN IN THE ESOPHAGUS, MOUTH AND CERVIX
SQUAMOUS EPITHELIUM
TYPES OF EPITHELIAL TISSUE:
- TALL AS THEY ARE WIDE
- HAVE MICROVILLI AT APICAL SURFACE
- FUNCTION TO ABSORB OR SECRETE
- FOUND IN SALIVARY GLANDS AND THYROID FOLLICLES
CUBOIDAL EPITHELIUM
TYPES OF EPITHELIAL TISSUE:
- TALLER THAN THEY ARE WIDE
- MAY HAVE CILLIA OR MICROVILLI
- LINES ORGANS OF THE G.I TRACT, RESPIRATORY TRACT AND FALLOPIAN TUBES
COLUMNAR EPITHELIUM
TYPES OF EPITHELIAL TISSUE:
- ABLE TO CHANGE SHAPE FROM FLAT TO CUBOIDAL AND BACK DEPENDING ON TENSION AND DISTENTION OF TISSUE.
- EXAMPLES INCLUDE THE BLADDER.
TRANSITIONAL EPITHELIUM
TYPES OF EPITHELIAL TISSUE:
THIS TISSUE PROVIDES LOCOMOTION OF THE CELLS THEMSELVES OR CAN HELP AID IN THE MOVEMENT OF WASTE OUT OF THE BODY
CILIATED EPITHELIUM
TYPES OF EPITHELIAL TISSUE:
-INCREASES THE SURFACE AREA OF A CELL BY MAKING THE CELL 3 DIMENSIONAL AND INCREASES ABSORPTION/SECRETION.
- HELPS ANCHOR SPERM TO EGGS.
- HELPS WITH THE MOVEMENT OF WHITE BLOOD CELLS.
MICROVILLI ON EPITHELIAL TISSUE
TYPES OF EPITHELIAL TISSUE:
HIGHLY INSOLUABLE FIBROUS PROTEIN WITH WATER PROOFING QUALITIES AND RESISTENCE TO FRICTION.
KERATIN
KERATIN THAT IS FUSED WITH EPITHELIAL CELLS IN THE STRATUM BASALE OF THE EPIDERMIS
KERATINOCYTES