Which artery provides the blood to the distal segments of the large intestine and rectum?
Inferior mesenteric artery
Inferior phrenic artery
Gonadal artery
Renal artery
The Correct Answer is A
A. Inferior mesenteric artery: This artery is responsible for supplying blood to the distal part of the large intestine, including the descending colon, sigmoid colon, and rectum.
B. Inferior phrenic artery: This artery supplies blood to the diaphragm, not the large intestine or rectum.
C. Gonadal artery: The gonadal arteries supply blood to the reproductive organs, such as the ovaries or testes, not the large intestine.
D. Renal artery: The renal arteries supply blood to the kidneys and are unrelated to the blood supply of the large intestine or rectum.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Parasympathetic stimulation causes urine to be expelled from the bladder: The micturition reflex involves parasympathetic stimulation that causes the detrusor muscle of the bladder to contract, leading to urine expulsion.
B. The micturition process begins as the kidneys fill with urine and activate stretch receptors: Stretch receptors are located in the bladder, not the kidneys.
C. Distension of the bladder inhibits urine release: Distension activates stretch receptors, initiating the micturition reflex, not inhibiting it.
D. The micturition reflex is under conscious control only: While the brain can exert voluntary control over urination, the reflex itself is involuntary and controlled by the autonomic nervous system.
Correct Answer is C
Explanation
A. Blood pumped into a ventricle in one minute: This describes venous return but not cardiac output.
B. Blood pumped into the atria in one minute: Cardiac output measures blood leaving the heart, not entering the atria.
C. Blood pumped by each ventricle in one minute: Cardiac output is the amount of blood ejected by each ventricle in one minute. It is calculated by multiplying stroke volume (the amount of blood ejected per beat) by heart rate.
D. Blood pumped out of an atrium in one minute: This describes atrial function but is not related to the definition of cardiac output.
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