30 Questions
What type of cells make up the secretory portion of eccrine sweat glands?
Large cuboidal or columnar cells
Which structure is responsible for expelling sweat into the ducts of eccrine sweat glands?
Myoepithelial cells
What is the role of the arrector pili muscle in relation to the hair shaft?
Causes the erection of the hair shaft
What is the primary function of sudoriferous glands in the skin?
Help eliminate metabolic waste products
Which type of glands are important in thermoregulation by reacting to stressful situations?
Sudoriferous glands
What component directly expels sweat into the skin surface?
Myoepithelial cells
Which layer of the skin is responsible for the synthesis of keratin?
Epidermis
Which cells are responsible for the synthesis and release of melanin?
Melanocytes
Which layer of the skin is avascular, meaning it does not have its own blood supply?
Epidermis
Which layer of the skin is the thickest, ranging from 0.3 to 4 mm?
Dermis
Which layer of the skin is primarily responsible for thermoregulation?
Dermis
Which of the following is NOT a layer of the skin?
Subcutaneous layer
What is the morphology of sebaceous glands?
Simple branched alveolar glands
What happens to the cells of the sebaceous gland when sebum is secreted?
The cells undergo total destruction
Which of the following is NOT a type of secretion mentioned in the text?
Sebaceous
What is the primary function of sweat glands?
Thermoregulation
Which of the following is an alternative term for sweat glands?
Sudoriferous glands
What is the common feature between sebaceous glands and sweat glands?
They are both found in the skin
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.
What is the approximate time it takes for the layers of the skin to be desquamated, according to the text?
1 month
What is the relationship between the stratum basale and the stratum spinosum?
The stratum basale and stratum spinosum together are called the stratum germinativum.
What is the main function of the stratum spinosum?
To continue the division of cells from the stratum basale
What is the defining characteristic of the cells in the stratum basale?
They are cuboidal or low columnar in a single layer.
What is the difference between the stratum basale and the stratum spinosum?
The stratum spinosum is thicker than the stratum basale.
What type of epithelium lines the nasopharynx?
Pseudostratified ciliated columnar epithelium with goblet cells
Which of the following statements about the larynx is NOT true?
It has a lining of stratified squamous non-keratinized epithelium.
What is the function of the trachealis muscles in the trachea?
To prevent collapse of the tracheal wall during inhalation
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.
Which of the following structures is NOT a paired cartilage of the larynx?
Cricoid cartilage
What is the primary function of the oropharynx and laryngopharynx?
Food and liquid passage
Test your knowledge on the Germinal Basal Layer of the epidermis and the process of skin cell turnover. Explore concepts such as mitotic figures, keratin production, and the duration of skin layer desquamation.
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