Lecture 3 Flashcards
Function and location of non-ciliated simple columnar epithelium?
Function: Absorption and secretion.
Location: Digestive Tract, Gall bladder, some excretory glands.
Function and location of ciliated simple columnar epithelium?
Function: Moves mucous and other substances.
Location: Upper respiratory tract, fallopian tubes.
Function and location of pseudo stratified columnar?
Function: Secretion, usually mucous.
Location: Upper respiratory tract.
Function and location of stratified squamous?
Function: Protection from abrasion.
Location: Oesophagus, epidermis (keratinised)
Function and location of stratified cuboidal?
Function: Protection.
Location: Large ducts of glands.
Function and location of stratified columnar?
Function: Protection, secretion.
Location: Urethra, excretory ducts of some glands.
Function and location of transitional epithelium?
Function: Permits distension.
Location: Bladder, ureter, urethra.
2 types of glandular epithelium?
Endocrine - ductless, typically secrete hormones.
Exocrine - Unicellular - goblet cells secrete mucin.
- Multicellular - simple or compound.
3 types of cellular secretion? And how each works?
Merocrine - secretory vesicles released.
Apocrine - pinched off portion of cell is secretion.
Holocrine - Mature cell dies, becoming secretory product.
6 functions of Connective tissue?
Binds, supports and strengthens other tissue. Protects and insulates. Major transport systems. Compartmentalises. Energy storage. Immune function.
Two components of CT?
Intracellular (ICM) and extracellular (ECM) matrix.
Is CT vascular and innervated?
Yes, except cartilage.
CT cell types?
Fibroblasts, macrophages, RBCs, adipocytes, chondrocytes, WBCs.
What does ECM consist of?
Ground substance, and protein fibres.
3 types of protein fibre in ECM? And description of each?
Collagen - non elastic, strong and flexible.
Elastic - rubbery.
Reticular thin and branched collagen with other proteins.
What type of CT is found in embryos, and what does it do?
Mesenchyme - forms other kinds of CT.
6 types of mature CT?
Loose CT, Dense CT, Cartilage, Bone, Blood, Lymph.
What type of substance is Areolar CT?
Are the 3 fibres bunched together?
Semifluid ground.
No, loosely dispersed.
What acts as a shock absorber and insulator in subcutaneous tissue?
Adipose (loose CT).
What forms stroma in reticular organs (lymph nodes, spleen, bone marrow).
Reticular (loose CT).
What is closely packed Collagen fibres?
And where are these found?
Dense CT.
Areas where tension is exerted in a single direction along axis of fibre, e.g. tendons, ligaments.
Two types of Dense CT?
Where is each found?
Dense irregular CT, dermis of skin
elastic CT, lung tissue and arteries.
What is the most widely distributed cartilage?
Hint: this also forms articular cartilage at ends of long bones.
Hyaline.
Where is elastic cartilage found?
External ear.
