Download TISSUE ORGANIZATION

TISSUES: The Living Fabric
Tissue - a group cells
similar in structure and
function
Histology - the study
of tissues; requires a
light microscope to
examine
EMBRYONIC GERM LAYERS
• Endoderm - functional linings of the digestive
and respiratory tract; accessory organs and glands
such as lungs, stomach, pancreas
• Mesoderm - skeletal system, muscular system,
and circulatory system
• Ectoderm - epidermis of the skin and all
components of the nervous system
PRINCIPLE TISSUE TYPES
PRINCIPLE TISSUE TYPES
Epithelial Tissue
LOCATIONS OF
EPITHELIAL TISSUE
– Epithelia=forms sheets or layers of cells that
line the body tubes, cavities, or coverings of the
body surfaces.
– Glands=formed of epithelial cells with
secretory functions.
LOCATIONS
CHARACTERISTICS OF
EPITHELIAL TISSUES
• Polarity
CHARACTERISTICS OF
EPITHELIAL TISSUES
CHARACTERISTICS OF
EPITHELIAL TISSUES
• Polarity
• Supported by a basal lamina
CHARACTERISTICS OF
EPITHELIAL TISSUES
CHARACTERISTICS OF
EPITHELIAL TISSUES
• Polarity
• Supported by a basal lamina
• Cellularity
CHARACTERISTICS OF
EPITHELIAL TISSUES
CHARACTERISTICS OF
EPITHELIAL TISSUES
•
•
•
•
•
•
Polarity
Supported by a basal lamina
Cellularity
Avascular
Highly innervated
Rapid regeneration
FUNCTIONS OF
EPITHELIAL TISSUES
NAMING
EPITHELIAL TISSUE
DIVERSITY OF
EPITHELIAL TISSUES
Simple Squamous Epithelium
Simple Squamous Epithelium
Stratified Squamous
Epithelium
Simple Cuboidal Epithelium
Stratified Cuboidal Epithelium
Simple Columnar Epithelium
Pseudostratified Columnar
Epithelium
Stratified Columnar
Epithelium
Transitional Epithelium
GLANDULAR EPITHELIUM
• Endocrine glands= “ductless” glands that
produce hormones. Secrete directly into
interstitial fluids or bloodstream.
Examples: pituitary gland, adrenal gland,
thyroid gland, etc.
• Exocrine glands=glands possessing ducts.
Exocrine glands secret their substance either
on the body surfaces or within ducts.
Exocrine Glands
Unicellular Exocrine Glands
Multicellular Exocrine Glands
Multicellular Exocrine Glands
Connective Tissue
LOCATION OF
CONNECTIVE TISSUE
• Most abundant tissue in the body.
• Never exposed to the outside environment.
CHARACTERISTICS OF
CONNECTIVE TISSUES
• Common Origin
ORIGIN OF
CONNECTIVE TISSUES
CHARACTERISTICS OF
CONNECTIVE TISSUES
• Common Origin
• Connective tissues vary widely in
appearance and function but all forms share
three basic components:
• Specialized cells
• Extracellular protein fibers
• Ground substance
CHARACTERISTICS OF
CONNECTIVE TISSUES
CHARACTERISTICS OF
CONNECTIVE TISSUES
• Common Origin
• Connective tissues vary widely in
appearance and function but all forms share
three basic components.
• Many types of connective tissue are highly
vascular and contain sensory receptors that
detect pain, pressure, temperature, and other
stimuli.
FUNCTIONS OF
CONNECTIVE TISSUE
DIVERSITY OF
CONNECTIVE TISSUE
CONNECTIVE TISSUE
PROPER
• Loose Connective Tissue
• Areolar
• Adipose
• Reticular
• Dense Connective Tissue
• Dense regular
• Dense Irregular
• Elastic
Loose Connective Tissues
• Areolar
• Adipose
• Reticular
Areolar Tissue
Adipose Tissue
Reticular Tissue
Dense Connective Tissue
• Dense Regular
• Dense Irregular
• Elastic
Dense Regular
Dense Irregular
Elastic Tissue
LIQUID
CONNECTIVE TISSUE
• Blood
• Lymph
Blood
Lymph
SUPPORTING CONNECTIVE
TISSUES
• Cartilage
• Hyaline cartilage
• Elastic cartilage
• Fibrous cartilage
• Bone (Osseous Tissue)
• Compact
• Spongy
Cartilage
• Hyaline cartilage
• Elastic cartilage
• Fibrous cartilage
Hyaline Cartilage
Elastic Cartilage
Fibrous Cartilage
Osseous Tissue
• Compact bone
• Spongy bone
Compact versus Spongy Bone
Compact Bone
Compact Bone
Cartilage versus Bone
MEMBRANES
MEMBRANES
MUCOUS MEMBRANES
SEROUS MEMBRANES
CUTANEOUS MEMBRANES
SYNOVIAL MEMBRANES