When the cardiac muscle cell is at rest, the concentration of _____________ is greater on the outside of the cell.
A) calcium
B) sodium
C) potassium
D) sodium and calcium
E) potassium and sodium
Answer: D) sodium and calcium
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Answer the following statements true (T) or false (F)
1. The papillary muscles contract after the other ventricular muscles so that they can take up the slack on the chordae tendineae before the full force of ventricular contractions sends blood against the AV valve flaps 2. An ECG provides direct information about valve function. 3. As pressure in the aorta rises due to atherosclerosis, more ventricular pressure is required to open the aortic valve. 4. The adjustment of blood flow to each tissue in proportion to its requirements at any point in time is termed autoregulation. 5. Arterial pressure in the pulmonary circulation is much higher than in the systemic circulation because of its proximity to the heart.
Define primary immune response
What will be an ideal response?
What cranial nerves communicates sensory message from the gustatory cells to the medulla oblongata?
A) Glossopharyngeal, hypoglossal, and abducens B) Facial, glossopharyngeal, and vagus C) Facial, trigeminal, and olfactory D) Facial, trigeminal, and abducens
This is a diagram of a multipolar neuron. What does "D" represent?
A. nucleus of neuron B. dendrite C. neuroglia cells D. axon E. cell body of neuron