Epidermal Basal Layer and Skin Cell Turnover Quiz

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What type of cells make up the secretory portion of eccrine sweat glands?

Large cuboidal or columnar cells (correct)

Myoepithelial cells

Smooth muscle cells

Small cuboidal cells

Which structure is responsible for expelling sweat into the ducts of eccrine sweat glands?

Sebaceous glands

Excretory ducts

Myoepithelial cells (correct)

Arrector pili muscle

What is the role of the arrector pili muscle in relation to the hair shaft?

Causes the erection of the hair shaft (correct)

Produces sebum in the hair follicle

Secrete uric acid onto the skin surface

Forms the excretory ducts of sweat glands

What is the primary function of sudoriferous glands in the skin?

Help eliminate metabolic waste products Signup and view all the answers

Which type of glands are important in thermoregulation by reacting to stressful situations?

Sudoriferous glands Signup and view all the answers

What component directly expels sweat into the skin surface?

Myoepithelial cells Signup and view all the answers

Which layer of the skin is responsible for the synthesis of keratin?

Epidermis Signup and view all the answers

Which cells are responsible for the synthesis and release of melanin?

Melanocytes Signup and view all the answers

Which layer of the skin is avascular, meaning it does not have its own blood supply?

Epidermis Signup and view all the answers

Which layer of the skin is the thickest, ranging from 0.3 to 4 mm?

Dermis Signup and view all the answers

Which layer of the skin is primarily responsible for thermoregulation?

Dermis Signup and view all the answers

Which of the following is NOT a layer of the skin?

Subcutaneous layer Signup and view all the answers

What is the morphology of sebaceous glands?

Simple branched alveolar glands Signup and view all the answers

What happens to the cells of the sebaceous gland when sebum is secreted?

The cells undergo total destruction Signup and view all the answers

Which of the following is NOT a type of secretion mentioned in the text?

Sebaceous Signup and view all the answers

What is the primary function of sweat glands?

Thermoregulation Signup and view all the answers

Which of the following is an alternative term for sweat glands?

Sudoriferous glands Signup and view all the answers

What is the common feature between sebaceous glands and sweat glands?

They are both found in the skin Signup and view all the answers

What is the primary reason the Germinal Basal Layer of the epidermis shows plenty of mitotic figures?

The skin is constantly producing new cells to replace those that are desquamated. Signup and view all the answers

What is the approximate time it takes for the layers of the skin to be desquamated, according to the text?

1 month Signup and view all the answers

What is the relationship between the stratum basale and the stratum spinosum?

The stratum basale and stratum spinosum together are called the stratum germinativum. Signup and view all the answers

What is the main function of the stratum spinosum?

To continue the division of cells from the stratum basale Signup and view all the answers

What is the defining characteristic of the cells in the stratum basale?

They are cuboidal or low columnar in a single layer. Signup and view all the answers

What is the difference between the stratum basale and the stratum spinosum?

The stratum spinosum is thicker than the stratum basale. Signup and view all the answers

What type of epithelium lines the nasopharynx?

Pseudostratified ciliated columnar epithelium with goblet cells Signup and view all the answers

Which of the following statements about the larynx is NOT true?

It has a lining of stratified squamous non-keratinized epithelium. Signup and view all the answers

What is the function of the trachealis muscles in the trachea?

To prevent collapse of the tracheal wall during inhalation Signup and view all the answers

Which of the following statements about the bronchi is correct?

The tertiary or segmental bronchi have a lining of pseudostratified ciliated columnar epithelium with goblet cells. Signup and view all the answers

Which of the following structures is NOT a paired cartilage of the larynx?

Cricoid cartilage Signup and view all the answers

What is the primary function of the oropharynx and laryngopharynx?

Food and liquid passage Signup and view all the answers