What is the function of glucagon?
A. To block the secretion of glycogen converted glucose
B. To stimulate cells to take in glucose
C. To stimulate the conversion of glycogen to glucose
D. To tell the liver to store excess glucose as glycogen
Answer: C
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Arrange the following in order from the diencephalon downward.(1) Spinal cord(2) Midbrain(3) Medulla(4) Pons
A. 1, 2, 3, 4 B. 4, 1, 3, 2 C. 4, 2, 3, 1 D. 3, 2, 4, 1 E. 2, 4, 3, 1
Vomiting should be induced whenever an animal ingests a poison
a. true b. false
Birds regularly reach altitudes higher than human mountain climbers can ascend without using auxiliary breathing apparatus, both as residents and during migration
For example, radar tracking of migrating birds shows that they sometimes fly as high as 6500 meters, the alpine chough lives at altitudes of around 8200 meters on Mount Everest, and bar-headed geese pass directly over the summit of the Himalayas at altitudes of 9200 meters during their migrations. Explain the features of the sauropsid respiratory system that allow birds to breathe at such high altitudes.
Cardiac muscle cells tend to be thicker and shorter than skeletal muscle cells
Indicate whether this statement is true or false.