Histology

Question 1

type of collagen in granulation and scar tissue

Answer 1

3 and 1

Question 2

type II collagen found in

Answer 2

cartilage
vitreous humor
nucleus pulposus

Question 3

basement memb collagen?

Answer 3

4

Question 4

bone ,tendons , ligaments(not cartilage)

Answer 4

type 1

Question 5

which of the following band change size during contraction?
A
I
H

Answer 5

A band extends over the entire region of myosin and does not change size
I and H decrease in size

Question 6

what is attached to M and Z line

Answer 6

thick

thin

Question 7

where is C peptide formed

Answer 7

in pancreatic beta cells golgi.

secreted in equimolar conc with insulin

Question 8

what is produced by

1. theca externa
2. theca interna
3. granulosa cells

Answer 8

1. just a connective tissue capsule
2. produce androgens+ progesterone from cholesterol under LH
3. convert andr into estrogen (aromatase) under influence of FSH

Question 9

pseudostratified ciliated columnar PCC found in

Answer 9

1. trachea and bronchi(ciliated in bronchioles but not pseudostratified)
2. male reproductive tract

Question 10

clara cells

Answer 10

bronchiolar secretory cells
secrete serous soln similar to surfactant
detoxify airborne particles
stem cells

Question 11

name cytoskeletal elements

Answer 11

microfilaments
intermediate filaments
microtubules(hollow)

Question 12

which CE undergoes assembly disassembly

Answer 12

microfilaments and microtubules

Question 13

microfilaments is made up of

Answer 13

helical filaments of F actin which are further made up of G actin

Question 14

fxn of microfilamnent

Answer 14

muscle contraction with myosin
cytokinesis by forming contractile ring
core of microvilli

Question 15

types of intermediate filaments

Answer 15

4 types

1. keratins
2. diverse
3. neurofilaments
4. ,lamins in nuclear envelop

Question 16

desmin found in

Answer 16

skelatal
cardia
git smooth m

Question 17

vimentin found in

Answer 17

fibroblast
fibrocytes
ebdothelial
vascular smooth m

Question 18

GAF protein

Answer 18

astrocytes and some schwann cells

Question 19

peripherin found in

Answer 19

peripheral n axons

Question 20

microtuble fxn

Answer 20

transport (anter/retrograde)
mitotic spindle
true cilia and flagella(dynein)

Question 21

tight jxn/ zonula occludens

Answer 21

fxn:barrier to diffusion
determine cell polarity
made up of :occludens and claudin
punctate contacts of adj epi cells
cutoplasmic part attached to actin

Question 22

zonula adherns

Answer 22

forms belt below zonula occludens

cytoplasmic part attached to actin

Question 23

gap jxn made up of

Answer 23

connexons each made up of of six connexin

Question 24

hemidesmosome fxn

Answer 24

binds cells to BM

Question 25

hemi/desmosomes made up of

Answer 25

integrins
cadhederins
cytoplasmic part attached to intermediate filaments

Question 26

pemphigus vulgaris

Answer 26

auto Abs againt desmosomal proteins

Question 27

bullous pemphigus

Answer 27

auto Abs againt BM hemidesmosomal protein

less severe

Question 28

kartagener syn is due to defect in

Answer 28

dynein arm