Which layer of a blood vessel contains concentric sheets of smooth muscle tissue?
A) tunica intima
B) external elastic membrane
C) tunica media
D) internal elastic membrane
E) tunica externa
Answer: C
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The effect of pH on hemoglobin saturation is known as the
A) Bainbridge reflex. B) Bohr effect. C) pulmonary reflex. D) respiratory effect. E) Hering-Breuer reflex.
When energy is released during catabolism, it is temporarily trapped in high energy bonds or electrons of certain compounds. Which of the following is NOT associated with carrying energy?
A) FADH2 B) NADPH C) ATP D) NADH E) DNA
Miguel is a 25-year-old jogger with a target heart rate of 125 bpm. His resting pulse is 70 bpm. His blood volume is approximately 6.8 liters. At rest, his cardiac output is 6.3 liters/min.
A. What must his stroke volume be? B. What might his EDV and ESV be? C. During his workout, his heart rate increases to 125 bpm and his cardiac output to 12,500 mL/min. Do his SV, EDV, and ESV change with exercise?
Rapid changes in altitude can rupture the eardrum. Symptoms that may occur include
A. dizziness. B. light headedness. C. feeling of a "full" ear. D. ringing in the ears. E. hearing impairment.