With regards to circadian rhythms,
a. the hypothalamus supraoptic nucleus maintains them
b. the suprachiasmatic nucleus is responsible for generating them
c. they are brought about by fluctuating levels of clock proteins
d. both a and b are true
e. both a and c are true
D
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A __________ is a display of the chromosomes of a somatic cell during metaphase of mitosis
A. karyotype B. genome C. gamete D. locus
Which of the following structures is NOT part of the bony labyrinth?
A. Semicircular canals B. Tympanic membrane C. Cochlea D. Vestibule E. All of these structures are part of the bony labyrinth.
Which embryonic structures give rise to the thoracic and right lymphatic ducts?
A. Subclavian channels B. Subclavian lymph sacs C. Jugular channels D. Jugular lymph sacs E. Mesoderm lymph sacs
An increase in blood PCO2 will cause __________.
a) decrease in blood PO2 b) decrease in blood hydrogen ion concentration c) hypoventilation d) decrease in blood pH