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the outermost layer of the pericardium is
dense connective tissue
autorythmic
body, lungs
increased, sympathetic trunk
conduct impulses
70 times per minute
thick and fibrous
to ensure a one-way flow of blood
the heart rate is ________ by input from the sympathetic nervous system through the ________
dense connective tissue
autorythmic
body, lungs
increased, sympathetic trunk
conduct impulses
70 times per minute
thick and fibrous
to ensure a one-way flow of blood
the human heart is essentially two co-joined pumps: the one on the left pumps blood to the ____, while the one on the right pumps blood to the _____
dense connective tissue
autorythmic
body, lungs
increased, sympathetic trunk
conduct impulses
70 times per minute
thick and fibrous
to ensure a one-way flow of blood
the human heart beats, on average, approximately
dense connective tissue
autorythmic
body, lungs
increased, sympathetic trunk
conduct impulses
70 times per minute
thick and fibrous
to ensure a one-way flow of blood
the heart has a 'pacemaker' a bundle of cells that steadily depolarize between action potentials, making them
dense connective tissue
autorythmic
body, lungs
increased, sympathetic trunk
conduct impulses
70 times per minute
thick and fibrous
to ensure a one-way flow of blood
the purpose of valves in the heart is
dense connective tissue
autorythmic
body, lungs
increased, sympathetic trunk
conduct impulses
70 times per minute
thick and fibrous
to ensure a one-way flow of blood
the unique junctions between cardiac muscle cells allow them to
dense connective tissue
autorythmic
body, lungs
increased, sympathetic trunk
conduct impulses
70 times per minute
thick and fibrous
to ensure a one-way flow of blood
the heart contains a fibrous 'skeleton', the anulus fibrosus, which consists of four interconnected fibrous rings that encircle the base of the valves: this is made of
dense connective tissue
autorythmic
body, lungs
increased, sympathetic trunk
conduct impulses
70 times per minute
thick and fibrous
to ensure a one-way flow of blood
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