Blood leaving the heart in the pulmonary arteries has a relatively
A) high oxygen level.
B) low carbon dioxide level.
C) high pH level.
D) low oxygen level.
E) None of the answers are correct.
D) low oxygen level.
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If the entire epidermis were to become keratinized, visible skin would become incredibly hard and inflexible.
Answer the following statement true (T) or false (F)
Describe the dorsal respiratory group (DRG)
What will be an ideal response?
Secondary spermatocytes each contain
A) 23 single chromosomes. B) 23 chromosomes, each with a pair of duplicate chromatids. C) twice the diploid number of chromosomes. D) 46 pairs of chromosomes. E) 46 chromosomes.
Deep folds of both the mucosa and submucosa in the small intestine that increase surface are known as ________
A) circular folds (plicae circulares) B) microvilli C) haustra D) villi