The tough structure that surrounds the heart and helps reinforce and maintain position of the heart is the
A) mediastinum.
B) epicardium.
C) pericardial sac.
D) pleural cavity.
E) aorta.
C) pericardial sac.
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Two stimuli occur on the same neuron more than a minute apart. The second stimulus is more than ten times greater than the first. If we compare the two resulting action potentials, which is TRUE?
A. The second stimulus will lead to an action potential with a longer hyperpolarization at the end. B. The second stimulus will lead to an action potential with higher amplitude. C. The amplitude of the two action potentials will be the same. D. The amplitude and duration of the second action potential will be greater than the first. E. The second stimulus will lead to an action potential with a longer duration.
The normal pupil light response is called indirect PLR
Indicate whether the statement is true or false
In the BioPac activity examining human brain waves, how many electrodes will be used for the EEG?
A) 5 B) 3 C) 1 D) 15
Nerve tracts other than the corticospinal tracts that transmit impulses into the spinal cord
are called extrapyramidal tracts. Indicate whether the statement is true or false