The inferior, conical end of the heart is called the ________.
Fill in the blank(s) with the appropriate word(s).
apex
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The condition known as shock is characterized by a decreased return of venous blood to the heart. How could an upsetting situation such as the sight of a tragic accident or very bad news produce shock?
What will be an ideal response?
Aldosterone
a. enhances the ability of the kidneys to eliminate excess K+ b. directly promotes H2O conservation by the kidneys c. secretion is inhibited by angiotensin II d. is not a steroid e. is produced in the adrenal medulla
Gap junctions can be found in all of the following tissues except
A) cardiac muscle. B) smooth muscle. C) skeletal muscle. D) simple columnar epithelium. E) pseudostratified columnar epithelium.
The ________ is the pacemaker that initiates each heart beat
A) sinoatrial (SA) node B) atrioventricular (AV) node C) sympathetic division of the nervous system D) cardiac conduction system E) autonomic nervous system