OHE

Question 1

is branch of medical science that deals
with the study of minute structures of the tissues
and organs of the body.

Answer 1

Histology

Question 2

is a branch of science that deals
with the study of microscopic structures of oral and
dental tissues.

Answer 2

oral histology

Question 3

s a group of cells with intercellular substance
and tissue fluid, performing a definite function

Answer 3

Tissue

Question 4

Group
of tissue performing special functions form the

Answer 4

organs

Question 5

Aggregation of organs with definite
functions is known as

Answer 5

organ system

Question 6

is a unit of living matter

Answer 6

Cell

Question 7

cell is made

Answer 7

cytoplasm and nucleus

Question 7

The external boundary of a cell is known as

Answer 7

plasma membrane or plasmalemma

Question 8

Protoplasm inside the cell is the cytoplasm
containing 3

Answer 8

Organelles
Inclusion bodies
Amorphous matrix.

Question 9

The most prominent organelle of the cell.

Answer 9

Nucleus

Question 10

The nucleus is covered by a thin membrane known as

Answer 10

Nuclear membrane

Question 11

Within the nucleus are the nucleolus and irregular masses known

Answer 11

chromatin material

Question 12

chromatin material composed of

Answer 12

RNA

Question 13

Suspended in ground substance known as

Answer 13

Karyolymph (nucleoplasm)

Question 14

are membrane-bound cell organelles

Answer 14

Mitochondria

Question 15

Chemical energy
produced by the mitochondria is stored in a small molecule called

Answer 15

Adenosine triphosphate (ATP)

Question 16

shows various forms but the most common is in form of plates or lamellae or plates may dilate to bowl-shaped
structure (cisternae).

Answer 16

Golgi complex

Question 17

Consist of minute fluid containing
membrane-bound tubules known as canaliculi, cisternae, or vesicles which may form sometimes a network (reticulum) or maybe in
form of granules (when free are known as ribosomes or polysomes)

Answer 17

Endoplasmic reticulum

Question 18

When granules adhere to the outside membrane, they form

Answer 18

Rough surface endoplasmic reticulum (R E R)

Question 19

tubules lacking
ribosomes are known as

Answer 19

smooth surfaced endoplasmic reticulum (S
E R).

Question 20

are located close to nucleus in a
specialized area of the cytoplasm known as centrosome or cell
center.

Answer 20

Centrioles or Liposomes

Question 21

these appear as two stained bodies

Answer 21

(in light microscope) or
hallow and tubular (in electron microscope).

Question 22

are minute threadlike bodies of different lengths and
circumferences

Answer 22

Filaments

Question 23

In ______the threadlike structures are
called tonofilaments of fibroblast, cytoplasmic fibril; nerve cells, neurofilaments, and of muscles, myofilaments

Answer 23

Mitosis

Question 24

are single membrane-bound bodies containing powerful digesting enzymes which assist the cell in destroying foreign particles or prevent the cell from overproducing by digesting some of the secretions.

Answer 24

Lysosomes

Question 25

Are tiny, straight and tubular organelles often of different lengths.

Answer 25

Microtubules

Question 26

The inclusion bodies are composed of 7

Answer 26

carbohydrates protein, pigments crystalloids fat gas and other metabolites or foreign materials.

Question 27

are packed materials to be secreted. These are of various diameter and density but the most common form is spheroid

Answer 27

Secretion granules

Question 28

such as lipofuscin observed in muscles and nerve fibers; melanin in melanocytes; and hemoglobin in red blood corpuscles.

Answer 28

Pigments

Question 29

has variable size and closely associated with mitochondria and built to function as an energy source

Answer 29

Lipids (fat)

Question 30

a storage form of glucose, is found predominantly in liver and muscle cells as cytoplasmic granules. In liver cells, these granules group together to form rosettes, frequently in close proximity to smooth endoplasmic reticulum

Answer 30

Glycogen granules

Question 31

in electron microscope have been observed to be associated with nucleus, endoplasmic reticulum, mitochondria, golgi apparatus, lysosomes and with secretion granule.

Answer 31

Crystalline particles

Question 32

Electron microscope have been observed to be associated with 6.

Answer 32

NUCLEUS ENDOPLASMIC RETICULUM MITOCHONDRIA GOLGI APPARATUS LYSOSOME SECRETION GRANULE

Question 33

The organelles and inclusion bodies are suspended in a formless material known a

Answer 33

amorphous matrix

Question 34

holds the cells together and serves as a medium for the passing of nutrients and waste materials from capillaries.

Answer 34

Intercellular substance (fibrous or amorphous in nature)

Question 35

had been grouped based on the similarities of its components, difference in form and number of cells, in types and amounts of intercellular substance and tissue fluid.

Answer 35

human tissue

Question 36

What is the four fundamental tissue?

Answer 36

Epithelial tissues (ectoderm) Connective tissue (mesoderm) Nervous tissue (ectoderm) Muscular tissue (mesoderm)

Question 37

serves as surface covering of the skin and mucous membrane and give rise to organs like glandular organs

Answer 37

Epithelial tissue

Question 38

What are the 5 glandular organs

Answer 38

pancreas Liver thyroid gland salivary gland dental organ.

Question 39

What are the 3 types of epithelial?

Answer 39

Simple epithelium Pseudostratified columnar Stratified epithelium

Question 40

cells are arranged in single layer.

Answer 40

Simple epithelium

Question 41

Scale-like of flat cell

Answer 41

Squamous

Question 42

Cube-shaped

Answer 42

Cuboidal

Question 43

Tall and narrow

Answer 43

columnar

Question 44

actually composed of single layer of columnar cells arranged in such a way that the epitheliumappears to have several layers of cells, cause by difference in location of nuclei

Answer 44

Pseudostratified columnar

Question 45

consists of two or three more layers of cells

Answer 45

Stratified epithelium

Question 46

What are the 6 Connective tissue (mesoderm)

Answer 46

Fibrous tissue in lamina propria Loose, areolar tissue Adipose tissue Hemopoietic tissue Cartilage Bone

Question 47

has a large amount of intercellular substance and few cells (tendons and ligaments).

Answer 47

Fibrous tissue in lamina propria

Question 48

The intercellular substance are of 2 kind

Answer 48

Fibrillar – (with numerous fibroblasts) Amorphous (shapeless, no differentiation)

Question 49

What is the 2 types of fibrillar

Answer 49

Collagen and elastic fibers

Question 50

with numerous fibroblast

Answer 50

Fibrilla

Question 51

shapeless, no differentiation

Answer 51

amorphous

Question 52

has small amount of cells, loose and thin network of fibrous intercellular substance held together by a large amount of amorphous substance.

Answer 52

Areolar tissue

Question 53

is made up of areolar tissue and fat tissue.

Answer 53

fascia

Question 54

compose of fat cells held together by fibrous intercellular substance. Fat cells maybe filled with fat so thatcytoplasm is pressed into a thin layer around the periphery of the cells and nucleus is pushed to the side of the cell.

Answer 54

Fat tissue

Question 55

produces blood cells as well as removing the worn out blood cell from the blood stream.

Answer 55

Hemopoietic Tissue

Question 56

alcified connective tissue containing large amount of dense fibrous intercellular substance (with amorphous substance)

Answer 56

Bone

Question 57

Cells with in the bone are the

Answer 57

osteocytes

Question 58

osteocytes found spaces known as

Answer 58

lacunae

Question 59

Tissue of central and peripheral nervous system

Answer 59

Nervous tissue (ectoderm)

Question 60

is composed of nerve cells called neuron capable of reacting to stimuli (irritability) and of transmission of wave excitation or nerve impulse.

Answer 60

Nervous tissue

Question 61

the nervous system consists of 2 chief divisions

Answer 61

-Central nervous system (brain and spinal cord) -peripheral nervous system (nerve of various organs of the body)

Question 62

Cells of the central nervous system are supported by

Answer 62

neuroglia (nerve glue)

Question 63

This tissue is composed of muscle cells which are long and has been called as muscle fibers.

Answer 63

Muscular tissue

Question 64

what are the 2 types of Muscular tissue (mesoderm)

Answer 64

Smooth involuntary Striated involuntary

Question 65

where the cytoplasm has cross striations

Answer 65

Striated muscle

Question 66

where the cytoplasm of the muscle appear clear (walls of intestine, walls of blood vessel, and roots of hair)

Answer 66

Smooth muscle tissue

Question 67

contraction of muscle fibers maybe controlled by the individual (arms, legs, other parts of the body, tongue, cheeks, lips and soft palate).

Answer 67

Voluntary muscles (skeletal muscle)

Question 68

contraction of its fibers is not under the control of the individual’s will.

Answer 68

Involuntary muscle (cardiac muscle)