Which of the following regions of the human brain is critically important for controlling heart rate and breathing?
A. medulla oblongata
B. cerebellum
C. thalamus
D. hippocampus
E. cerebral cortex
A. medulla oblongata
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________ is used to measure the amount of a chemoattractant encountered over time.
Fill in the blank(s) with the appropriate word(s).
Erythropoietin, a hormone that stimulates stem cells in the bone marrow to increase erythrocyte production, is
produced in the ____.
a. bone marrow b. heart c. kidneys
d. liver e. lymph nodes
Assuming a typical monohybrid cross in which one allele is completely dominant to the other, what ratio is expected if the F1s are crossed?
What will be an ideal response?
Which of the following statements about the organs of balance and equilibrium is false?
A. The three semicircular canals of the vestibular apparatus function in dynamic equilibrium. B. At the base of each semicircular canal is a bulging region called the ampulla. C. The brain receives and integrates signals from the semicircular canals on both sides of the head. D. dynamic equilibrium allows you to keep your eyes locked on an object even when you swivel your head or nod. E. Organs in the saccule and utricle act in the sense of dynamic equilibrium.