The lining of the heart chambers is called the:
a. myocardium.
b. epicardium.
c. pericardium.
d. endocardium.
Answer: d. endocardium.
Anatomy & Physiology
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What component of the cardiac conduction system distributes electrical signals directly through the papillary muscles?
a. AV nodes b. AV bundle c. bundle of His d. Purkinje fibers e. SA node
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Which of the following is a neurohormone?
a. vasopressin b. thyroid hormone c. growth hormone d. cortisol e. luteinizing hormone
Anatomy & Physiology
What is the unstoppable electrical current that travels down the length of the entire surface of a sarcolemma?
A) neuromuscular junction B) action potential C) neurotransmitter D) acetylcholine
Anatomy & Physiology
An anatomic image created from sound waves is a
A. radiograph. B. CT scan. C. MRI. D. sonogram.
Anatomy & Physiology