The sinoatrial node is located _______
A) in the right atrial wall of the human heart
B) in the interventricular septum of the human heart
C) outside the human heart
D) in the left atrial wall of the human heart
Answer: A) in the right atrial wall of the human heart
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Inadequate release of a hormone is called __________.
Fill in the blank(s) with the appropriate word(s).
In terms of embryonic origin, neurons are most closely related to ________ cells.
A) connective tissue B) cardiac muscle C) skeletal muscle D) epithelial
The rate of conduction of a nerve impulse depends upon
A) the number of cell dendrites. B) properties of the soma of the neuron. C) the presence or absence of a myelin sheath. D) the type of neurotransmitter present. E) All of the answers are correct.
Blood passing through the tricuspid valve is going into the ________.
Fill in the blank(s) with the appropriate word(s).