Blood leaving the right ventricle enters which blood vessel?
A) pulmonary trunk
B) aorta
C) coronary artery
D) precava
E) pulmonary vein
A
Explanation:
B) The artery connected to the left ventricle is the aorta.
C) The coronary artery branches off the aorta.
D) The precava carries blood to the right atrium.
E) The pulmonary veins carry blood to the left atrium.
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Which of following is a common characteristic of fast glycolytic (FG) skeletal muscle fibers?
a) large amount of myoglobin. b) many mitochondria. c) low concentration of creatine kinase in the sarcoplasm. d) slow myosin ATPase. e) high amount of glycogen in the sarcoplasm.
Which of the following is a normal consequence of the activation of the heat-promoting center?
A) vasodilation of cutaneous blood vessels B) sympathetic sweat gland activation C) increase in ADH production D) release of epinephrine
Answer the following questions true (T) or false (F)
1. The most common cause of abnormal hemoglobin is an inherited condition known as sickle-cell anemia. 2. The most common leukocyte is the neutrophil while the least common leukocyte is the basophil. 3. Both granulocytes and agranulocytes arise from the lymphoid stem cell line.
The upper third of the esophagus has skeletal muscle in its wall. What are some possible advantages of this fact?
A. The first phase of swallowing is involuntary. B. Peristalsis will not be necessary, and will not occur. C. The final phase of swallowing is voluntary. D. The bolus can clear the upper esophagus quickly.