Which one of the following represents the correct path for the transmission of an impulse in the intrinsic conduction system of the heart?
A) atrioventricular (AV) node, sinoatrial (SA) node, atrioventricular (AV) bundle (bundle of His), right and left bundle branches, Purkinje fibers
B) atrioventricular (AV) node, atrioventricular (AV) bundle (bundle of His), sinoatrial (SA) node, Purkinje fibers, right and left bundle branches
C) sinoatrial (SA) node, atrioventricular (AV) bundle (bundle of His), atrioventricular (AV) node, Purkinje fibers, right and left bundle branches
D) sinoatrial (SA) node, atrioventricular (AV) bundle (bundle of His), atrioventricular (AV) node, right and left bundle branches, Purkinje fibers
E) sinoatrial (SA) node, atrioventricular (AV) node, atrioventricular (AV) bundle (bundle of His), right and left bundle branches, Purkinje fibers
E
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a) I b) J c) K d) L e) H
The structural classification of a neuron is based upon
A) the number of processes that project from the cell body. B) the size of the dendrites. C) the number of axons. D) the type of chemical neurotransmitter it secretes. E) the overall size of the cell.
Afferent fibers from muscle spindle stretch receptors in a muscle make excitatory synaptic contact with motor neurons that innervate the extrafusal fibers of the same muscle
Indicate whether the statement is true or false.