E2: Observing Body Tissues (I)

Question 1

A group of cells found together in the body

Answer 1

Tissue

Question 2

The body contains at least _____

Answer 2

200 distinct cell types

Question 3

True or False

The cells contain essentially the same internal structures, yet they vary enormously in shape and function.

Answer 3

True

Question 4

True or False

The different types of cells are randomly distributed throughout the body; rather they occur in organized layers, a level of organization referred to as tissue

Answer 4

False: The different types of cells are not randomly distributed throughout the body; rather they occur in organized layers, a level of organization referred to as tissue

Question 5

The cells within a tissue share a ________?

Answer 5

Common embryonic Origin

Question 6

True or False

Cells in a tissue share morphological features and are arranged in an orderly pattern that achieves the tissue’s functions

Answer 6

True

Question 7

True or False

Having tissue level organization increases the efficiency of the body as different shapes and internal structures are better suited to carry out different functions.

Answer 7

True

Question 8

True or False

Having different tissues for different functions allows for a slow speed of activity and a worse effectiveness in performing the various activities.

Answer 8

False: Having different tissues for different functions allows for a greater speed of activity and a greater effectiveness in performing the various activities.

Question 9

What are the four categories of tissues?

Answer 9

1. Epithelial
2. Connective
3. Muscle
4. Nervous

Question 10

Refers to the sheets of cells that cover exterior surfaces of the body, lines internal cavities and passageways, and forms certain glands

Answer 10

Epithelial tissue

Question 11

Also referred to as epithelium

Answer 11

Epithelial tissue

Question 12

True or False

Some epithelial tissues are essentially large sheets of cells covering all the surfaces of the body exposed to the outside world, and lining the organs and the body cavities

Answer 12

False: Most epithelial tissues are essentially large sheets of cells covering all the surfaces of the body exposed to the outside world, and lining the outside of organs and the body cavities

Question 13

Also forms much of the glandular tissue of the body

Answer 13

Epithelial tissue / Epithelium

Question 14

What areas are lined by epithelium

Answer 14

1. Skin
2. Airways
3. The digestive tract
4. Urinary System
5. Reproductive systems

Question 15

Hollow organs and body cavities that do not connect to the exterior of the body, which includes, blood vessels and serous membranes, are lined by ________, which is a type of epithelium.

Answer 15

Endothelium

Question 16

True or False

Epithelial tissues provide the body’s first line of protection from physical, chemical, and biological wear and tear.

Answer 16

True

Question 17

True or False

The cells of tissues act as gatekeepers of the body controlling permeability and allowing selective transfer of materials across a physical barrier

Answer 17

False: The cells of an epithelium act as gatekeepers of the body controlling permeability and allowing selective transfer of materials across a physical barrier

Question 18

What are the three types of shapes of epithelial tissues

Answer 18

1. Squamous
2. Cuboidal
3. Columnar

Question 19

Flattened and thin cell shape

Answer 19

Squamous

Question 20

Boxy, as wide as it is tall cell shape

Answer 20

Cuboidal

Question 21

Rectangular, taller than it is wide cell shape

Answer 21

Columnar

Question 22

What are the two types of cell layers?

Answer 22

1. Simple
2. Stratified

Question 23

It’s a single cell layer of tissue

Answer 23

Simple epithelium

Question 24

More than one cell layer

Answer 24

Stratified epithelium

Question 25

Cells rests on the basal lamina

Answer 25

Basal layer

Question 26

Describes tissue with a single layer of irregularly shaped cells that give the appearance of more than one layer

Answer 26

Pseudostratified

Question 27

Describes a form of specialized stratified epithelium in which the shape of the cells can vary

Answer 27

Transitional

Question 28

Has an appearance of thin scales and is present where rapid passage of chemical compounds is observed

Answer 28

Simple squamous epithelium

Question 29

A nuclei tend to be flat, horizontal, and elliptical, mirroring the form of the cell

Answer 29

Squamous cell

Question 30

Give an example of a Simple squamous cell

Answer 30

1. Alveoli of lungs (where gases diffuse) 2. Segments of kidney tubules 3. The lining of capillaries

Question 31

The nucleus of the box-like cells appears round and is generally located near the center of the cell

Answer 31

Simple cuboidal epithelium

Question 32

Active in the secretion and absorptions of molecules

Answer 32

Simple cuboidal epithelium

Question 33

What areas are lined in Simple cuboidal epithelia

Answer 33

1. Lining of the kidney tubules 2. In the ducts of glands

Question 34

The nucleus of the tall column-like cells tends to be elongated and located in the basal end of the cells. Also, active in the absorption and secretion of molecules

Answer 34

Simple columnar epithelium

Question 35

Forms the lining of some sections of the digestive system and parts of the female reproductive tract

Answer 35

Simple columnar epithelium

Question 36

Composed of simple columnar epithelial cells with cilia on their apical surfaces

Answer 36

Ciliated columnar epithelium

Question 37

Are found in the lining of the uterine tubes and parts of the respiratory system, where the beating of the cilia helps remove particulate matter

Answer 37

Ciliated columnar epithelium

Question 38

Is a type of epithelium that appears to be stratified but instead consists of a single layer of irregularly shaped and differently sized columnar cells

Answer 38

Pseudostratified columnar epithelium

Question 39

Found in the respiratory tract, where some of these cells have cilia

Answer 39

Pseudostratified columnar epithelium

Question 40

Most common type of stratified epithelium in the human body

Answer 40

Stratified squamous epithelium

Question 41

The apical cells are ________

Answer 41

Squamous

Question 42

The basal layer contains either _________ or _________

Answer 42

Columnar or Cuboidal cell

Question 43

In the Stratified squamous epithelium, the top layer may be covered with dead cells filled with _________

Answer 43

Keratin

Question 44

The lining of the mouth cavity is an example of a?

Answer 44

Nonkeratinized stratified squamous epithelium

Question 45

Can also be found in certain glands and ducts, but are uncommon in the human body

Answer 45

1. Stratified cuboidal epithelium 2. Stratified columnar epithelium