Which of the following nerves arising from the lumbosacral plexuses are the largest and longest peripheral nerves in the body?
A) femoral nerves
B) obturator nerves
C) pudendal nerves
D) sciatic nerves
Answer: D) sciatic nerves
Anatomy & Physiology
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How do cardiac muscle fibers differ from the muscle fibers of the arms and legs?
A. Longer muscle fibers than the limbs B. Non-striated fibers rather than striated fibers C. Poorer supply of blood than the limbs D. Routine involuntary movement
Anatomy & Physiology
The heart is lined by epithelium, called the myocardium.
Answer the following statement true (T) or false (F)
Anatomy & Physiology
Modifiers that affect heart rate are _______.
A) agonists B) antagonists C) inotropic D) chronotropic
Anatomy & Physiology
In which of these areas is the partial pressure of oxygen (PO2) normally the greatest?
A) inspired air B) alveolar air C) expired air D) pulmonary capillaries E) tissue capillaries
Anatomy & Physiology