Unilateral contraction of the muscles of the erector spinal group results in
A. extension of the vertebral column.
B. lateral flexion of the trunk.
C. flexion of the head.
D. abduction of the hip.
E. flexion of the vertebral column.
Answer: B
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A. sodium and potassium across the wall of the nephron. B. tubular fluid within the ascending and descending limb of the nephron loop. C. salts and water across the wall of the renal tubule. D. tubular fluid in the proximal convoluted tubule and collecting tubule.
The thoracic duct and the right lymphatic duct both drain into which vein?
A) axillary B) vena cava C) brachial D) subclavian
A person who is standing facing forward with hands at the sides, palms facing forward, is in the:
A) frontal position. B) sagittal position. C) anatomical position. D) supine position.
What is the most important trigger for aldosterone release?
A) blood buffers B) thirst mechanism C) antidiuretic hormone (ADH) D) renin-angiotensin mechanism