In cardiac muscle, after the plateau phase and at the beginning of replolarization,

a. voltage-gated sodium channels open.
b. voltage-gated potassium channels open.
c. voltage-gated calcium channels open


b. voltage-gated potassium channels open.

Anatomy & Physiology

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The lateral or Sylvian fissure is external to the

A. frontal lobe. B. temporal lobe. C. parietal lobe. D. occipital lobe. E. insula.

Anatomy & Physiology

Which system is concerned with internal organs (viscera)?

A. Autonomic B. Somatic C. Somatic and autonomic

Anatomy & Physiology

If the nerves from the carotid and aortic bodies are cut, which of these would occur?

A. An increase in arterial lactic acid will inhibit ventilation. B. A decrease in arterial PO2 will inhibit ventilation. C. An increase in arterial PCO2 will no longer increase ventilation. D. A decrease in arterial PO2 will no longer increase ventilation. E. An increase in arterial PCO2 will inhibit ventilation.

Anatomy & Physiology

What characteristic do all inflammatory chemicals share?

A. They are all a type of histamine. B. They all help stop bleeding. C. They are all vasodilators. D. They are all secreted by macrophages.

Anatomy & Physiology