Epithelial tissue quiz

protects underlying tissues; named for numbers of layers+ shape of top layer of cells

stratified squamous epithelium

lines kidney tubules and covers surface of ovary

simple cuboidal epithelium

secretes and absorbs materials in the GI tract; cells taller than they are wide

nonciliated simple columnar epithelium

found in much of upper respiratory tract, secretes and moves mucus

pseudostratified columnar epithelium

lines heart and blood vessels, forms walls of air sacs in lungs

simple squamous epithelium

forms glands, coverings and linings; high degree of cellularity; avascular

epithelial tissue

Which tissue forms coverings, linings, and glands?

epithelial

The function of the basement membrane is to:

anchor epithelial tissues onto underlying connective tissue

performs filtration, diffusion, osmosis and secretion in serous membranes

simple squamous epithelium

act as "spot welds", hold cells together with cadherins, stabilizes epidermis

desmosomes

web like strands of transmembrane proteins, fuse outer surfaces of cells together, prevents leakage between cells

tight junctions

A tissue is a group of cells
B) that have a common embryonic origin.
C) that work together to carry out specific functions.
A and B are correct.
A, B and C are correct.
A) that have similar morphology.

A, B, and C are correct

Each of the following cell junctions links cells to each other EXCEPT:
desmosomes
hemidesmosomes
gap junctions
adherens junctions
tight junctions

hemidesmosomes

All of the following are true of cell junctions EXCEPT:

Some cell junctions allow materials to pass directly from one cell to another.
Some cell junctions help cells resist separation from each other.
Some cell junctions fuse the inner surfaces of plasma membranes together.
Some cell junctions anchor cells to one another.
Some cell junctions anchor cells to extracellular material.

Some cell junctions fuse the inner surfaces of plasma membranes together

Which of the following is true of glandular epithelia?

Their primary function is secretion

A Papanicolaou smear

examines nonkeratinized stratified squamous epithelium.

The type of cell junction that prevents the contents of the stomach or urinary bladder from leaking into surrounding tissues is the:

tight junction

Epithelial tissues are classified based on

(A)The arrangement of cells in layer & (B) The shapes of the cells in the most superficial layer.

Which modification of columnar epithelium is correctly described?

microvilli: increase surface area for absorption

During a lab, a student examines a tissue sample with a microscope. He sees several groups of irregularly shaped cells with central, darkly staining nuclei. The groups of cells resemble floor tiles or fish scales. He prepares to name the tissue, but the instructor asks him to state its function. What is the function of the tissue described?

filtration and diffusion

lines Fallopian (uterine) tubes, some parts of upper respiratory tract

ciliated simple columnar epithelium

A pathologist examines a thin slice of tissue with a microscope and notes numerous cells packed tightly together. No intercellular space or blood vessel is noted between cells, but the cells have polarity. One side of the cells opens into a cavity, and the other is attached to a thin layer of extracellular material. Several of the cells are in some stage of mitosis. Which primary tissue type does the pathologist see?

Epithelial

Which type of membrane is found lining any body cavity that opens directly to the exterior?

mucous

Flat sheets of flexible tissue found covering or lining large portions of the body are

called membrane

Which of the following are the first tissues that form in the human embryo?

ectoderm, mesoderm, endoderm

secrete products such as sweat, saliva, and digestive enzymes into ducts

endocrine glands

Which of the following tissues provides the greatest protection from mechanical injury?

stratified squamous epithelium

Which cell junctions prevent epidermal cells from separating under tension?

desmosomes

Keratin is seen in tissues that

resist friction.

contractile tissue; cells called fibers; 2 forms striated; 2 under involuntary control

muscle tissue

Arteries, veins, and lymphatic vessels keep clots from sticking as long as their ______ is intact and healthy.

Endothelium

Which cells are commonly found wedged between simple columnar epithelial cells?

goblet cells

Which of the following would be of most importance to goblet cells and other glandular epithelia?

Microvilli

_____ epithelium appears to have two or three layers of cells, but all the cells are in contact with the basement membrane.

Pseudostratified columnar epithelium

Which tissue would line the uterine (fallopian) tubes and function as a “conveyer belt” to help move a fertilized egg towards the uterus?

Ciliated simple columnar epithelium

Which of the following is true about epithelia?

Endothelium provides a slick surface lining all hollow cardiovascular organs

Select the correct statement regarding epithelia

Stratified epithelia are present where protection from abrasion is important.

Glands, such as the thyroid, that secrete their products directly into the blood rather than through ducts are classified as ______.

endocrine

Act as “spot welds,” hold cells together with cadherins, stabilizes epidermis.

Desmosomes

Lines kidney tubules and covers surface of ovary.

Simple cuboidal epithelium

Which of the following is true of glandular epithelia?

Their primary function is secretion.

secrete products such as sweat, saliva, and digestive enzymes into ducts.

exocrine glands

Which of the following tissues provides the greatest protection from mechanical injury?

Stratified squamous epithelium