Each hair grows in an oblique epithelial tube called a
bulb
vellus
hair root
pilus
hair follicle
The Correct Answer is E
A. bulb: The bulb is the enlarged base of the hair where active cell division occurs, producing the hair shaft, but it is not the entire oblique epithelial tube.
B. vellus: Vellus refers to fine, pale hair covering most of the body in children and adult females. It describes the type of hair, not the structure in which hair grows.
C. hair root: The hair root is the portion of the hair beneath the surface of the skin, extending from the bulb to the point where the hair emerges, but it is contained within the follicle rather than being the whole tube.
D. pilus: Pilus is a general term for a hair shaft or hair in Latin, but it does not refer specifically to the oblique epithelial tube structure that surrounds hair growth.
E. hair follicle: The hair follicle is the oblique epithelial tube that surrounds the hair root and bulb. It anchors the hair into the skin and provides the environment for hair growth and regeneration.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. basal cell carcinoma:Basal cell carcinoma is the most common type of skin cancer, typically arising from the basal cells in the epidermis. It grows slowly and rarely metastasizes, making it less deadly than other skin cancers.
B. squamous cell carcinoma:Squamous cell carcinoma originates from the keratinocytes of the epidermis. It is more aggressive than basal cell carcinoma but still has a relatively good prognosis with early treatment.
C. skin lymphoma:Skin lymphoma is a rare cancer affecting lymphocytes in the skin. While it can be serious, it is not the most deadly form of skin cancer compared to melanoma.
D. melanoma:Melanoma arises from melanocytes and is the least common type of skin cancer. It is highly aggressive and prone to metastasis, making it the most deadly form if not detected and treated early.
Correct Answer is A
Explanation
A. Merocrine:Merocrine glands secrete their products by exocytosis, where vesicles release substances such as sweat or enzymes without damaging the gland cell. This is the most common method of glandular secretion.
B. Mucous:Mucous glands produce thick, viscous secretions rich in glycoproteins, but the term describes the type of secretion rather than the mechanism. They can still use merocrine exocytosis to release their products.
C. Holocrine:Holocrine glands release their secretion when the entire gland cell ruptures and disintegrates, releasing cell contents along with the secretion. This process is not exocytosis.
D. Endocrine:Endocrine glands release hormones directly into the bloodstream rather than through ducts. They do not use exocytosis of vesicles into ducts, making them different from merocrine glands.
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