Question 1

Macrophage-like cells are found in many different tissues, and may have specific names that reflect theirlocation or specializations. What is the one functional characteristic common to all macrophage-like cells?

Accepted Answer

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Question 2

Aunt Jessie woke up one morning with excruciating pain in her chest. She had trouble breathing for several weeks. Following a visit to the doctor, she was told she had pleurisy. What is this condition and what did it affect?

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Question 3

Skin, lung, and blood vessel walls have which tissue characteristic in common?

Accepted Answer

Skin, lung, and blood vessel walls all have elastic fibers, which provide elasticity and resilience to these tissues as they stretch and contract. Simple columnar epithelium lines the digestive tract, while simple squamous epithelium lines blood vessels and body cavities. Reticular fibers provide structural support in organs such as the liver and lymph nodes.

Question 4

A 45-year-old woman is admitted to the hospital for surgical removal of a tumor on her thyroid gland.The surgeon informs her that she will have only a very thin scar. How could this be possible?

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Question 5

In adult humans, most cancers are carcinomas or adenocarcinomas. These include cancers of the skin, lung, colon, breast, and prostate. Which of the four basic tissue types is involved? Why do you think this is so?

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Question 6

How can one tell the difference between stratified squamous epithelium and transitional epithelium?

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Question 7

In terms of structure and function, compare the type of epithelium lining the trachea, air sacs of the lungs, and the epidermis of the skin.

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Question 8

Tendon tears or breaks are difficult to repair both physiologically and surgically. Why?

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Question 9

What type of membrane lines closed ventral body cavities? List three examples.

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Question 10

Generally speaking, connective tissues are largely non-living extracellular matrix. Which of the following is an exception?

Accepted Answer

Adipose tissue is an exception because it contains a higher proportion of living cells (adipocytes) compared to the extracellular matrix, which is minimal.

Question 11

Explain what is meant by epithelial tissue being avascular but innervated.

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Question 12

Since mature adipocytes rarely divide, how can adults gain weight?

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Question 13

Which tissue type is formed by many cells joining together, each contributing nuclei?

Accepted Answer

Skeletal muscle is made up of long, multinucleated cells called muscle fibers, which are formed by the fusion of many smaller cells called myoblasts. Each myoblast contributes its nucleus to the muscle fiber, resulting in a final product that contains multiple nuclei.

Question 14

Choose which tissue type likely functions to add support to an organ.

Accepted Answer

Hyaline cartilage is a type of connective tissue that provides support to organs and aids in joint movement.

Question 15

How is epithelial tissue the opposite of connective tissue?

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Question 16

John, a 72-year-old grandfather, had been smoking heavily for 24 years and had a persistent cough. Abiopsy of his lung tissue revealed considerable amounts of carbon particles. How could this happen considering the natural cleaning mechanism of the respiratory system?

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Question 17

The salivary glands are a good example of a ________ exocrine gland.

Accepted Answer

The salivary glands are compound tubuloalveolar exocrine glands because they have both tubular and alveolar secretory units, and they are branched and compound in structure.

Question 18

Your instructor gives you an unknown organ for you to examine and identify through microscopy. What should you do first with the sample?

Accepted Answer

Fixing the sample with a preservative is the first step in preparing biological tissues for microscopy, as it preserves the tissue's structure by preventing decay.

Question 19

Choose which tissue would line the uterine (fallopian) tubes and function as a "conveyer belt" to help move a fertilized egg towards the uterus.

Accepted Answer

Ciliated simple columnar epithelium is the best choice for lining the uterine tubes, as the cilia can create a "conveyer belt" effect to help move a fertilized egg towards the uterus. Stratified squamous epithelium is not appropriate for this function, as it is better suited for protection against abrasion and mechanical stress. Simple cuboidal epithelium and smooth muscle also do not have the necessary structures to provide the necessary movement for the egg.

Question 20

How is blood unique among connective tissues?

Accepted Answer

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Quiz 4: Tissues: the Living Fabric