Atrial depolarization causes the ________.
A. quiescent period
B. P wave
C. first heart sound
D. QRS complex
E. T wave
Answer: B
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Joe and Jane desperately want to have children, and although they have tried for two years, they have not been successful. Finally, they both agree to consult a specialist, and it turns out that Joe suffers from oligospermia (a low sperm count). He doesn't understand why this would interfere with his ability to have children since he remembers from biology class that "it only takes one sperm to fertilize an egg." What should the specialist tell him?
What will be an ideal response?
What are the advantages and disadvantages to an organism of sensory receptor adaptation?
What will be an ideal response?
Blood vessels, nerves, and the ureter enter and leave the kidney at the ________.
A. hilum B. renal fascia C. renal pelvis D. renal pyramid E. renal capsule
The neural tunic of the eye
-contains bipolar cells. -contains ganglion cells. -contains the photoreceptor cells. -is the deepest layer of the eyeball. -All of the answers are correct.