Cytoskeleton

Question 1

Intermediate filaments in the nuclei of cells

Answer 1

Lamins (not to be confused with LAMININS)

Question 2

Intermediate filaments in epithelia and related structures

Answer 2

Keratins

Question 3

Intermediate filaments in neurons

Answer 3

Neurofilaments

Question 4

Intermediate filaments in fibroblasts

Answer 4

Vimentins (also in vascular smooth muscle)

Question 5

Intermediate filaments in glia

Answer 5

Glial Fibrillary Acid Proteins (GFAPs)

Question 6

Intermediate filaments in skeletal, cardiac, and smooth muscle

Answer 6

Desmin

Question 7

Example of a microtubule associated protein (MAP)Role

Answer 7

taurole in microtubule assembly and stability

Question 8

Filaments are made from more than one subunitWhat are the subunits

Answer 8

Microtubulesalpha and beta

Question 9

Filaments are made from only one subunit type

Answer 9

Actinalpha, beta, and gamma

Question 10

Explore the extracellular environment and are important for the guidance of nerve growth cones and angiogenic blood vessels.

Answer 10

Filopodia

Question 11

Thin sheet-like projections that pull cells through tissues

Answer 11

Lamellopodia

Question 12

Guide cells through embryonic development

Answer 12

Membrane blebbing

Question 13

Allow for local degradation of extracellular matrix

Answer 13

Invadopodia

Question 14

Located behind lamellopodium. Couples ____ ___ to ______ - mediated contractility and substrate (e.g. ____ or ________) adhesion necessary for cell to move

Answer 14

Lamella,Actin network to myosin-II mediated contractility and substrate (e.g. ECM or another cell) adhesion necessary for cell to move

Question 15

9+2 complex of microtubles and one pair in the middle and MAPs called the axoneme - structure found in:

Answer 15

cilia

Question 16

Attached to the basal body within the cell:

Answer 16

axoneme

Question 17

short cylinder of 9 microtubule triplets

Answer 17

basal body

Question 18

What parts of the cytoskeleton are intracellular?

Answer 18

microfilaments (actin filaments)
microtubules
intermediate filaments

Question 19

bundles of actin filaments in this apical specialization. what does it insert into?

Answer 19

Microvilli; terminal web

also stereocilia

Question 20

What is the role of stereocilia; cilia?

Answer 20

absorb, move material in surface parallel direction

Question 21

besides cytoskeleton, what has a role in tissue scaffolding?

Answer 21

BM

Question 22

What fibers are extracellular?

Answer 22

Reticular fibers, collagens (all numerals), and elastic fibers