A & P Chapter 4
Why would it be detrimental if the digestive tract had stratified columnar epithelium instead of simple columnar epithelium?
Stratified columnar epithelium would be too thick to allow diffusion of water and nutrients into the blood stream.
Which of the following functions is not associated epithelial tissues? Sensation, Secretion, Protection, Support
Support
Skeletal muscle is often replaced with a dense irregular connective tissue when the muscle is damaged, leading to what is commonly known as scar tissue. What effect would you expect to see on the function of skeletal muscle tissue that has been replaced by scar tissue?
The dense irregular connective tissue is not contractile tissue so the function of the muscle would be altered.
What would happen if the simple squamous epithelium of the lungs thickened?
The epithelium would no longer allow for gas diffusion to occur quickly.
Which of these is not a function of the cytoskeleton? a. holds the cell's organelles in place b. it is involved in cell division c. allows substances to be transported into and out of the cell d. allows substances to be transported within the cell
c. allows substances to be transported into and out of the cell
What type of muscle tissue is this?
cardiac muscle tissue
The type of cellular junctions in the figure are __________.
gap junction
Which of the following substances is not able to cross a plasma membrane via simple diffusion?
glucose
Name the connective tissue type
hyaline cartilage
What does this image show?
hyaline cartilage
The structures identified by the circles are
intercalated disks
What type of epithelial tissue is this?
pseudostratified columnar epithelial
Where in the body would you find this type of tissue?
tendons
What type of epithelial tissue is this?
transitional epithelium
Glands that secrete their products directly into the blood are called __________.
Endocrine glands
In which of the following locations would you expect to find simple columnar epithelium?
Lining of the digestive tract
Fibrocartilage often replaces hyaline cartilage when it is injured or damaged. What effect will this have on articular surfaces of bones?
Fibrocartilage contains more protein fibers than hyaline cartilage and will make the surface less smooth.
Name the connective tissue type
adipose
Gap junctions will most likely be found in cells that:
are able to pass ions from one cell to the next
As you examine a slide under the microscope, you see pink wavy lines. You identify them as __________.
collagen fibers
What is the arrow pointing to?
collagen fibers
How would you classify this epithelial cell?
columnar
As you examine a slide under the microscope, you see multiple cell types surrounded by abundant ECM and protein fibers. You identify this tissue type as __________.
connective tissue
Name the connective tissue type
dense irregular connective tissue
If the stomach were lined with serous membrane instead of a mucus membrane,
it would not be able to protect the stomach against its acidic contents.
A thin sheet of one or more tissues that lines a body surface or cavity is called a(n) __________.
membrane
The type of secretion illustrated in this figure is __________.
merocrine secretion
The tissue responsible for conducting electrical signals and controlling the function of other tissues in the body is __________.
nervous tissue
The supportive cells of nervous tissue are called __________.
neuroglial cells
Tumors in the nervous system would involve
neuroglial cells because they are capable of mitosis.
Blood vessels contain many tight junctions between their cells to...
prevent solutes and fluid from leaking out of the blood into the extracellular matrix.
What type of epithelial tissue is this?
simple columnar epithelial
The proximal tubule of the nephron (kidney tubule) in the kidney is composed of which type of epithelium?
simple cuboidal epithelium
What type of epithelial tissue is this?
simple cuboidal epithelium
Which tissue will most likely be found lining organs where substances have to easily diffuse across, such as the intestines and the lungs?
simple epithelium
The wall of the alveolus (air sac) in the lung is composed of which type of epithelium?
simple squamous epithelium
This is an example of __________.
simple squamous epithelium
You are observing a tissue under the microscope and see long, cylindrical, striated, multinucleate cells, arranged parallel to each other. You identify this tissue as __________.
skeletal muscle
What type of muscle tissue is this?
skeletal muscle tissue
The type of involuntary muscle tissue found in the walls of hollow organs and blood vessels is __________.
smooth muscle
Elastic connective tissue is found in large blood vessels of the body. What would occur in these vessels if the elastic fibers were replaced with collagen fibers?
The vessels would lose their ability to stretch and become tough.
The epithelium of the esophagus is composed of which type of epithelial tissue?
stratified squamous epithelium
What type of epithelial tissue is this?
stratified squamous keratinized epithelium
What type of epithelial tissue is this?
stratified squamous nonkeratinized epithelium
If the intercalated discs of cardiac muscle lost their functionality...
the heart muscle would not be able to contract in unison.
Tissues have different types of protein fibers that contribute to their overall shape and function. Elastic fibers are made of the protein elastin, which provides distensibility and elasticity to tissues. If these fibers were to lose their elasticity...
the tissue would be able to stretch but not return to its original shape or size.
If the axon of a neuron was poisoned, the neuron
would not be able to transmit a signal to target cells.
What type of muscle tissue is this?
smooth muscle tissue
What type of epithelial tissue is this?
stratified columnar epithelium
What type of epithelial tissue is this?
stratified cuboidal epithelium
A natural result of aging is the thinning of the stratified squamous epithelium of the epidermal layer of the skin. What effects would you expect to see in the epidermis as this layer gets thinner?
As the epidermis thins, there will be higher incidences of lacerations in the elderly, due to the skin's inability to resist mechanical stresses.
What would occur in the skin if the desmosomes stopped functioning?
The skin would not be able to resist mechanical stress and break down easily.
