In which of the following regions of the body are the apocrine glands the most numerous?
axillary and pubic areas
soles of the feet
palms of the hands
both A and B
both B and C
The Correct Answer is A
A. axillary and pubic areas: Apocrine glands are concentrated in the axillae, areolae, and pubic regions. They become active during puberty and release a thicker secretion that can produce body odor when decomposed by bacteria.
B. soles of the feet: The soles contain numerous eccrine sweat glands, which function in thermoregulation, but apocrine glands are not typically found here.
C. palms of the hands: Like the soles, the palms are rich in eccrine sweat glands for cooling, but they lack apocrine glands.
D. both A and B: Apocrine glands are not present in the soles of the feet, only in axillary and pubic regions.
E. both B and C: Neither the soles nor the palms contain apocrine glands; they only have eccrine sweat glands.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. rRNA is always attached to the rough ER:Ribosomal RNA is a structural component of ribosomes, which may be free in the cytoplasm or attached to the rough ER. It is not always bound to the rough ER, making this statement inaccurate.
B. If the base sequence of DNA is ATTGCA, the messenger RNA template will be UCCAGU:The correct complementary mRNA sequence would be UAACGU, where adenine pairs with uracil, thymine with adenine, and cytosine with guanine. The sequence given in the option does not follow base-pairing rules.
C. Messenger RNA, transfer RNA, and ribosomal RNA play a role in protein synthesis:All three RNA types are essential for protein synthesis. mRNA carries genetic information from DNA, tRNA delivers amino acids to the ribosome, and rRNA provides structural support and enzymatic activity within ribosomes.
D. There is exactly one specific type of mRNA for each amino acid:mRNA molecules carry codons that specify amino acids, but there is no one-to-one relationship between mRNA and amino acids. Multiple codons may code for the same amino acid due to the redundancy of the genetic code.
Correct Answer is A
Explanation
A. chondrocyte:Chondrocytes are specialized cells found in cartilage tissue. They produce and maintain the cartilaginous extracellular matrix and are not present in areolar connective tissue.
B. mast cell:Mast cells are abundant in areolar connective tissue and play a key role in inflammation by releasing histamine and other chemical mediators during immune responses.
C. macrophage:Macrophages are present in areolar connective tissue, where they function in phagocytosis to remove pathogens, debris, and damaged cells.
D. fibroblast:Fibroblasts are the most common cells in areolar connective tissue. They produce fibers such as collagen and elastin, as well as the extracellular matrix that provides structural support.
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