Formation Of Tissue Cells

Question 1

Totipotent

Answer 1

Totipotency is the ability of a single cell to divide and produce all the differentiated cells in an organism, including extraembryonic tissues.[2] Totipotent cells include spores and zygotes

Question 2

Pleuripotent

Answer 2

: not fixed as to developmental potentialities; especially : capable of differentiating into one of many cell types

Question 3

Epithelial lining external surfaces of the body, and terminal parts of passage opening to outside and are derived from

Answer 3

Ectoderm

Question 4

Gut lining epithelium is ……. I origin

Answer 4

Endodermal

Question 5

Urogenital tract lining epithelium is derived from

Answer 5

Mesoderm

Question 6

Endochrondal ossification

Answer 6

A cartilaginous model is first formed and is later replaced by bone

Question 7

Intra membranous ossification

Answer 7

Bones that are formed by direct ossification

Question 8

Primary centre of ossification gives rise to

Answer 8

Diaphysis

Question 9

Secondary centre of ossification gives rises to

Answer 9

Epiphysis

Question 10

Epiphyseal plate separates

Answer 10

Diaphysis from epiphysis in growing bone .

Question 11

So mites undergo three divisions

Answer 11

Dermatome, myotome, sclerotome

Question 12

Dermatome forms

Answer 12

Dermis of the skin

Question 13

Mytome forms the

Answer 13

Skeletal muscle

Question 14

Sclerotome helps to

Answer 14

Form the vertebral coluMn

Question 15

The myelin sheaths of peripheral nerves are derived from

Answer 15

Schwann cells

Question 16

The myelin sheaths of CNS is derived from

Answer 16

Oligodendrocytes

Question 17

Epithelial derived from the ectoderm

Answer 17

Epithelium of skin, hair follicles, sweat glands, and mammary glands
Epithelium over cornea and conjunctiva, external acoustic and outer surface of tympanic membrane
Mouth, lower part of anal canal, terminal part of male and female genitalia

Question 18

Endoderm

Answer 18

Epithelium Entire gut except part of the mouth and anal canal, auditory tube and middle ear, respiratory tract, urethra and vagina

Question 19

Epithelial derived from mesoderm

Answer 19

Tubules of kidneys, ureter, trig one of urinary bladder,, uterine tubes, uterus, part of vagina, testis and its duct system, endothelium lining the heart, blood vessels and lymphatics.

Question 20

Which mesenchymal cells forms many different types of blood cells

Answer 20

Lymphoblast and haemocytoblast

Question 21

At the site of formation of loose connective tissue the mesenchymal cells

Answer 21

Get converted into fibroblast

Question 22

Which cells secrete ground substance and synthesize the collagen, reticular and elastric fibre.

Answer 22

Fibroblast

Question 23

Which bone cells are seen in mature bone?

Answer 23

Osteocytes

Question 24

Osteoclasts

Answer 24

Cells responsible for bone removal.

Question 25

Fate of somites

Answer 25

Paraxial mesoderm becomes segmented to form a number of so mites that lie on either side of the developing neural tube.

Question 26

Sclerotome

Answer 26

Ventomedial part of somite
The cells of sclerotome migrate medially
Surround the neural tube

Question 27

The first cervical somite is not most cranial somite. True or false

Answer 27

False

Question 28

What somites are above first cervical somite,

Answer 28

The occipital somites (4-5) and pre occipital

Question 29

Occipital somites gives rise to muscles of

Answer 29

Tongue , and are supplied by hypoglossal nerve.

Question 30

The pre occipital somites are supplied

Answer 30

by the 3rd, 4th, 6th cranial nerve