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