How do veins prevent the backflow of blood?
A) Gravity
B) Pressure
C) Valves
D) Bulk flow
Answer: C
Anatomy & Physiology
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The partial pressure of oxygen in the pulmonary veins
a. is about 100 mmHg. b. equivalent to alveolar partial pressure. c. is dramatically different than pulmonary arteries' partial pressure d. both (a) and (b) above. e. all of these answers.
Anatomy & Physiology
From which amino acid are dopamine, norepinephrine, and epinephrine all derived?
A. Serine B. Histidine C. Tryptophan D. Tyrosine
Anatomy & Physiology
Which of these is one of the auditory ossicles?
A) malleus B) incus C) stapes D) All of the answers are correct. E) None of the answers is correct.
Anatomy & Physiology
What is considered the nail's growth center?
A. Nail groove B. Nail fold C. Nail matrix D. Nail plate
Anatomy & Physiology