Cell junctions

Question 1

What are the mechanical junctions?

Answer 1

• Ball and socket - lock

- Tongue and groove- can slide over each other

Question 2

Why does the lens need a gap junction?

Answer 2

it is avascular- so gap junction give it nutrients via the aqueous humour

Question 3

Why the requirement for gap junctions?

Answer 3

it gives cytoplasmic continuity

Question 4

Where else are there gap junctions?

Answer 4

in the cardiac muscle

Question 5

Why does the cardiac muscle have gap junctions?

Answer 5

It has cytoplasmic continuity which allows cells to pass directly from one place to another

Question 6

What is an alternative name for gap junctions in cardiac muscle?

Answer 6

intercalated discs

Question 7

What do desmosomes do?

Answer 7

the strong junction that anchors cells together