(visualize self in raft) You are in the big toe traveling toward the heart. The last vessel you pass through before entering the heart is the
aorta.
inferior vena cava.
coronary artery.
pulmonary vein.
inferior vena cava.
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The eggs of monotremes are much smaller than those of lizards of comparable body size. What is a possible reason for this?
What will be an ideal response?
Two opposing mechanisms determine alveolar expansion: _______ leads to alveolar expansion while ______ opposes alveolar expansion
A. lung recoil; positive pleural pressure B. positive pleural pressure; lung recoil C. lung recoil; negative pleural pressure D. negative pleural pressure; lung recoil
In a child, a vitamin D deficiency results in ________, whereas a vitamin A deficiency results in ________.
A. rickets; retardation of bone development B. pituitary dwarfism; rickets C. excess calcium absorption; osteomalacia D. soft bones; rickets
On average, how many lysosomes do cells contain?
a. about 10 b. about 50 c. about 100 d. about 300 e. about 1,000