Sudoriferous (sweat) glands are categorized as two distinct types. Which of the following are the two types of sweat glands?
mammary and ceruminous
eccrine and apocrine
holocrine and mammary
sebaceous and merocrine
The Correct Answer is B
A. mammary and ceruminous: Mammary and ceruminous glands are specialized glands that produce milk and earwax, respectively. They are not classified as the main types of sweat glands.
B. eccrine and apocrine: Eccrine glands are widely distributed and produce watery sweat for thermoregulation, while apocrine glands are found in specific areas like the axillae and groin and secrete thicker sweat associated with scent. These two categories constitute the primary types of sudoriferous glands.
C. holocrine and mammary: Holocrine glands, such as sebaceous glands, release their product via whole-cell rupture and are not sweat glands. Mammary glands are specialized exocrine glands, so this pairing does not represent the main sweat gland types.
D. sebaceous and merocrine: Sebaceous glands secrete sebum and are oil-producing, not sweat-producing. Merocrine is another term for eccrine secretion, but the pairing with sebaceous glands incorrectly categorizes sweat glands.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. TGCUU:RNA does not contain thymine (T); it contains uracil (U) instead. The presence of thymine makes this option incompatible with proper mRNA synthesis.
B. UGCAA:Complementary base pairing rules state that adenine (A) pairs with uracil (U) in RNA, cytosine (C) with guanine (G), guanine (G) with cytosine (C), thymine (T) with adenine (A), and thymine (T) with adenine (A).
C. ACGTT:This is identical to the DNA template strand and not complementary. The mRNA strand must be complementary to the DNA template strand, not a direct copy of it.
D. GUACC:This sequence does not match the base-pairing rules for the given DNA template. It represents a mismatch in complementary pairing, making it inaccurate for mRNA transcription.
Correct Answer is C
Explanation
A. stratum basale:This is the deepest layer of the epidermis, consisting of mitotically active basal cells. Its main function is cell division and replacement of superficial layers, not the initiation of keratinization.
B. stratum lucidum:This clear layer is found only in thick skin, such as the palms and soles. It contains densely packed keratin, but keratinization has already occurred before this stage.
C. stratum spinosum:Cells in this layer begin producing keratin and keratohyalin, initiating the process of keratinization. The spiny appearance of the cells is due to desmosomal attachments, which help strengthen the epidermis.
D. stratum corneum:This outermost layer is composed of fully keratinized, dead cells. By this stage, keratinization is complete, and cells are flattened, providing a protective barrier.
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