The first heart sound, "lub," is caused by the closure of the ________ valves
A) semilunar
B) pulmonary
C) atrioventricular (AV)
D) aortic
C
Anatomy & Physiology
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Select all that are in the medulla oblongata.
A. Ventral respiratory group B. Pontine respiratory center C. Pneumotaxic group D. Dorsal respiratory group E. Peripheral chemoreceptors
Anatomy & Physiology
The limbic system is associated with
A) Emotion. B) Motivation. C) Decision-making. D) All of the above
Anatomy & Physiology
The muscles that originate on the anterior surface of the pubic bone are
A) adductors of the thigh. B) medial rotators of the thigh. C) flexors of the thigh. D) extensors of the thigh. E) None of the answers are correct.
Anatomy & Physiology
The pointed, inferior portion of the heart, known as the ________, rests on the diaphragm and is oriented toward the left hip
A) base B) mediastinum C) apex D) pericardium
Anatomy & Physiology