In ovulation, after expelling the oocyte the follicle becomes ____________which produces_____________.
corpus luteum; FSH and LH
corpus albicans; progesterone
corpus albicans; estrogen and progesterone
corpus luteum; estrogen and progesterone
The Correct Answer is D
A. Corpus luteum; FSH and LH: The follicle transforms into the corpus luteum after ovulation, which secretes hormones. However, FSH and LH are hormones secreted by the pituitary gland, not products of the corpus luteum.
B. Corpus albicans; progesterone: The corpus albicans is a degenerated form of the corpus luteum and is not responsible for secreting progesterone.
C. Corpus albicans; estrogen and progesterone: The corpus albicans forms after the corpus luteum degenerates and does not produce significant levels of estrogen and progesterone.
D. Corpus luteum; estrogen and progesterone: After ovulation, the follicle transforms into the corpus luteum, which secretes estrogen and progesterone to support the early stages of pregnancy or regulate the menstrual cycle if pregnancy does not occur.
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Correct Answer is D
Explanation
A. Amino acids; proteins: Amino acids are the end products of protein digestion, not the substrates that are broken down.
B. Polysaccharides; amino acids: Polysaccharides are broken down into simple sugars (monosaccharides), not amino acids.
C. Proteins; nucleotides: Proteins are broken down into amino acids, not nucleotides. Nucleotides are components of nucleic acids, not proteins.
D. Nucleic acids; nucleotides: Nucleic acids (such as DNA and RNA) are broken down into nucleotides.
Correct Answer is A
Explanation
A. The bicarbonate, phosphate, and protein: The major chemical buffer systems in the body are the bicarbonate, phosphate, and protein buffer systems.
B. Glucose is not a buffering system; it is a primary energy source.
C. Magnesium is a mineral with various physiological roles but not a major chemical buffer system.
D. Creatinine is a waste product of muscle metabolism, not a buffer system.