Epithelial & Connective Tissue Flashcards
Epithelial Tissue Types
M.E.N.C
1. Muscular
2. Epithelial
3. Nervous
4. Connective Tissue
Epithelial Tissue function
- Lines cavities & body surfaces, and forms lining of organs and vessels.
- Lines. protects, secretes, absorbs
Epithelial Tissue Characterisitics
H.A.H.A.
1. High regeneration rate
2. Avascular
3. Has a apical & basal surfaces
4. Are closely packed cells
Epithelial tissue - Type characterizations
- Covering & lining Epithelial and Glandular epithelial
- Endothelium (vessel lining)& Mesothelium (serous membranes)
Simple Squamous
FUNCTION: Diffusion & filtration
LOCATION:
- Air sacs of lungs
- Blood vessels
- Heart lining
- Kidney glomeruli
- Lymphatic vessels
- Ventral cavity lining
Simple Cuboidal
FUNCTION: Secretes & absorbs
LOCATION:
- Kidney tubules
- Ducts and secretory portions of small glands
- Ovary surfaces
Simple Columnar
FUNCTION: Secretes & absorbs
LOCATION:
- Non-ciliated: Gallbladder & digestive trace
- Ciliated: small bronchi, uterine tubes, uterus (some regions)
Pseudostratified Columnar
FUNCTION: Secretion & propulsion of mucus (by ciliary action)
LOCATION:
-Non-ciliated: sperm carrying ducts & larger glands
- Ciliated: Trachea
Stratified Squamous
FUNCTION: Protects against abrasion
LOCATION: Oesophagus, mouth,vagina
Stratified Cuiboidal
FUNCTION: Protective tissue
LOCATION: glands (sweat, salivary, mammary)
Stratified Coloumnar
FUNCTION: Protects & Secretes
LOCATION: Male urethra, ducts of some glands
Transitional epithelium
FUNCTION : Urinary organs to swell & expand
LOCATION: Bladder, urethrae, ureters
Connective tissue - common elements
- Common origin (mesenchyme)
- Varying degrees of Vascularity
- Cells separated by Extracellular matrix (ground substance & fibres)
Difference between connective tissue and epithelial
Epithelial:
- Lines cavities & body surface, and forms lining of organs & vessels.
- Has virtually no extracellular matrix
Connective tissue:
- Supports, connects and separates tissue organs, and has a lot of extracellular matrix
Connective Tissue types:
C.C.B.B
1. Cartiliage
2. Connective Tissue Proper
3. Blood
4 .Bones
Connective Tissue Function
B.I.P.S
Binds, Insulates, Protects, Supports
Connective Tissue Proper Types - Loose Connective Tissue
- Areolar: Wraps & cushions organs
- Adipose: Energy storage; insulation
- Reticular: soft internal skeleton to support cells
Connective Tissue Proper Types - Dense Connective Tissue
- Regular (tendons & ligaments) stretch in one direction
- Irregular Stretch in many directions
- Elastic: Walls of arteries and bronchi (Recoil)
Connective Tissue Fibre types
- Collagen
- Elastic
- Reticular
Skin functions (6)
- Protection (physical, chemical, biological)
2) Excretion
3) Body temp regulation
4) Blood reservoir
5) Metabolic function (Vit D)
6) Cutaneous Sensation
2 x layers within Dermis
Papillary layer (top)
Reticular layer (bottom)