The membrane that surrounds and protects the heart is called the
a) pericardium.
b) pleura.
c) myocardium.
d) mediastinum.
e) endocardium.
a
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Leukocytes help to fight ________________________________________
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Skeletal muscles are stimulated to contract by release of the neurotransmitter ____________________
Fill in the blank(s) with correct word
This pathway is composed of the anterior spinothalamic tract and the lateral spinothalamic tract. Axons entering this pathway conduct stimuli related to crude touch and pressure as well as pain and temperature.
A. The spinocerebellar pathway B. The posterior funiculus-medial lemniscal pathway C. The posterolateral pathway D. The musculomedial pathway E. The anterolateral pathway
According to the Frank-Starling principle, a more powerful contraction results in
A) decreased stroke volume. B) increased stroke volume. C) no change in stroke volume. D) decreased cardiac output. E) a slower heart rate.