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. Salivary glands are accessory organs of digestion as they secrete saliva containing enzymes to start digestion.
B. Liver is an accessory organ involved in digestion, particularly in bile production and processing nutrients.
C. Pancreas is an accessory organ that secretes digestive enzymes into the small intestine.
D. Spleen is not involved in digestion; it is primarily involved in immune function and blood filtration.
Correct Answer is B
Explanation
A. Glomerulus is involved in filtering blood but not in producing hypertonic urine.
B. Collecting duct reabsorbs water and concentrates urine, making it hypertonic.
C. Nephron loop (loop of Henle) creates a concentration gradient in the medulla that helps in water reabsorption but is not the primary site for final urine concentration. This option is partially correct but less specific than the collecting duct.
D. Proximal convoluted tubule reabsorbs a significant portion of water and solutes but does not produce hypertonic urine.