Tissues and Organs

Question 1

Parts of the lateral surface

Answer 1

Tight junctions, adhesion junctions, desmosomes, gap junctions, cell adhesion molecules

Question 2

Tight junctions

Answer 2

Always at the top near the apical surface, block the flow of fluids between cells

Question 3

Adhesion junctions

Answer 3

Found in pairs, forms a belt, functions as tissue stabilising factor and additional transport barrier

Question 4

Desmosome

Answer 4

Connect adjacent cells with filaments, provides mechanical strength and prevents tissue destruction

Question 5

Gap junctions

Answer 5

Pores that connect adjacent cells and allow communication via exchange of ions that can carry electric current

Question 6

Parts of basal surface

Answer 6

He i-desmosome, focal adhesions, integrins, proteoglycans

Question 7

Hemi-desmosome

Answer 7

Anchors epithelial cells to basal lamina and prevents loss of external surface

Question 8

Focal adhesions

Answer 8

Attachment to basal lamina,

Question 9

Integrins

Answer 9

Hold tissues together

Question 10

Proteoglycans

Answer 10

Support hydration of extracellular matrix

Question 11

Urothelium

Answer 11

Transitional epithelium, protects bladder from damage by acidic urine

Question 12

Mucosa of GI tract

Answer 12

absorbs substances from lumen, prevents ingress of pathogens, moves contents and expel waste