Cardiac pacemaker cells have an unstable resting membrane potential as the result of an unusual __________ current

A) Magnesium
B) Sodium
C) Chloride
D) Calcium

Fill in the blank with the correct answer.


Answer: B

Anatomy & Physiology

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List the granulocytes and describe the appearance of their granules in a typical blood smear

What will be an ideal response

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Coding of sensory information may result from

a. the intensity of the stimuli b. the location of the stimuli c. they stimulus modality d. all of the above e. none of the above

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During ventricular systole, blood is ejected from the ventricles through the large arteries connected to the heart

Indicate whether the statement is true or false

Anatomy & Physiology

Which of the following is a specialized tissue in the right atrium that acts as the heart's natural pacemaker by generating the electrical signal for the heartbeat?

A) Sinus Venosus B) Sinoatrial Node C) Atrioventricular Node D) Septa

Anatomy & Physiology