Which of the following rodents is commonly used in studying cancer due to the fact that they are known for developing tumors?
a. mice c. gerbils
b. rats d. guinea pigs
B
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Which of the following organ systems is NOT aided by the MALT (mucosa-associated lymphatic tissue)?
a) Respiratory system b) Digestive system c) Muscular system d) Urinary system e) Reproductive system
Most newborns ________
A) are myopic B) see in tones of red and green only C) cry with copious tears D) often use only one eye at a time
What are blood islands, and from which cells do they form?
A) Blood islands are primitive capillary networks formed from embryonic cells scattered within the yolk sac. B) Blood islands are primitive arteries that are formed from hemangioblasts. C) Blood islands are primitive veins that are formed from hemangioblasts. D) Blood islands are aggregations of embryonic cells scattered within the yolk sac that form blood vessels and blood cells. E) Blood islands are collections of blood cells that are formed from embryonic hematopoietic stem cells.
The manubrium is part of what bone?
A) A rib B) Scapula C) Clavicle D) Vertebra E) Sternum