Question 1

The kidney contains large quantities of simple cuboidal epithelia.

Accepted Answer

The kidney is made up of simple cuboidal epithelia, which are specialized cells that function in waste filtration and electrolyte balance.

Question 2

What is the difference between neurons and neuroglia?

Accepted Answer

The answer of What is the difference between neurons and...

Question 3

Harriet had liposuction several years ago, but has since gained back all the weight lost through the procedure. She does not understand her weight gain because adipocytes are incapable of dividing. Provide a plausible explanation.

Accepted Answer

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Question 4

Explain why sunburned skin peels rather than being shed as a powder.

Accepted Answer

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Question 5

Adipose connective tissue is a type of dense connective tissue.

Accepted Answer

Adipose connective tissue is a type of loose connective tissue, not dense connective tissue.

Question 6

The superficial fascia surrounds all muscles.

Accepted Answer

The superficial fascia is a layer of connective tissue and fat that lies just beneath the skin. It does not surround all muscles, only those in certain areas of the body, such as the limbs and trunk. Muscles in other areas, such as the head and neck, are not surrounded by superficial fascia.

Question 7

Bone is dead supporting connective tissue.

Accepted Answer

Bone is not completely dead. It contains living cells called osteocytes, which help maintain the bone matrix and respond to mechanical stress.

Question 8

Heat, pain, and redness are signs of inflammation.

Accepted Answer

Heat, pain, and redness are classic signs of inflammation. Other signs include swelling, loss of function, and sometimes fever.

Question 9

A genetic disease that causes malformation of gaps junctions could lead to both cardiac and gastrointestinal problems.

Accepted Answer

Gap junctions are important for communication between cells, including coordination of muscle contractions in both cardiac and smooth muscle tissue in the gastrointestinal tract. If these junctions are malformed due to a genetic disease, it can lead to problems in both systems.

Question 10

Stratified squamous epithelia are found lining blood vessels.

Accepted Answer

Stratified squamous epithelia are commonly found lining body surfaces that are subject to wear and tear, such as the skin, mouth, and esophagus. They are not found lining blood vessels, which are typically lined by simple squamous epithelium.

Question 11

Analysis of a glandular secretion indicates that it contains some DNA, RNA, and membrane components such as phospholipids. What kind of secretion is this and why?

Accepted Answer

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Question 12

Transitional epithelium is found only in the female urinary tract.

Accepted Answer

Transitional epithelium is found in both the male and female urinary tract, as well as in other organs such as the bladder, ureters, and renal pelvis.

Question 13

What type of epithelium would you expect to find lining the alveoli (air sacs) in the lungs and why?

Accepted Answer

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Question 14

The body's most delicate type of epithelium is the stratified squamous epithelium.

Accepted Answer

The body's most delicate type of epithelium is simple squamous epithelium, not stratified squamous epithelium which is thicker and can be found in areas subjected to wear and tear such as the skin, mouth, and throat.

Question 15

Compare and contrast the three types of muscle tissue. List three similarities and three differences among them.

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Question 16

A biology student accidentally loses the labels of two prepared slides she is studying. One is a slide of an intestine, the other of an esophagus. You volunteer to help her sort them out. How would you decide which slide is which?

Accepted Answer

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Question 17

The pseudostratified columnar epithelium of the respiratory tract has immune functions.

Accepted Answer

The pseudostratified columnar epithelium of the respiratory tract has immune functions. It contains specialized cells called goblet cells that produce mucus to trap foreign particles, and cilia that move the mucus and trapped particles out of the respiratory tract. Additionally, the epithelium contains immune cells like macrophages and lymphocytes that help protect against infections.

Question 18

Elastic cartilage is found in the knee joint.

Accepted Answer

Elastic cartilage is a type of cartilage that contains elastic fibers and is found in parts of the body such as the outer ear, the epiglottis of the larynx, and the auditory tube. It is not found in the knee joint, which is primarily composed of hyaline cartilage.

Question 19

Cartilage heals poorly and in many instances does not heal or recover at all after a severe injury. Why not?

Accepted Answer

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Question 20

Which is likely to heal faster, a bone injury or a cartilage injury?
 Why?

Accepted Answer

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Quiz 4: Tissue Level of Organization