Which of the following structures contains both smooth and skeletal muscles?
(A) stomach
(B) jejunum
(C) cecum
(D) esophagus
(E) rectum
Ans: (D) esophagus
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The amount of air that can be forcefully inhaled beyond a normal inhalation is called ________.
A. tidal volume B. residual volume C. inspiratory reserve volume D. expiratory reserve volume
Homeostasis is the condition in which the body maintains ________
A) a dynamic state within an unlimited range, depending on circumstances B) a relatively stable internal environment, within limits C) the lowest possible energy usage D) a static state with no deviation from preset points
Which vein drains the thoracic and abdominal walls?
A. Brachiocephalic B. Subclavian C. Axillary D. Azygos E. Intercostal
Urine drains from the nephron into the calyces through the ________.
A. loop of Henle B. Bowman capsule C. distal convoluted tubule D. proximal convoluted tubule E. collecting duct