Because so many Na+ ions move into a cell during an action potential and so many K+ ions move out, no further action potentials can be generated in a given membrane until the Na+, K+-ATPase pumps can restore the concentration gradient.
Answer the following statement true (T) or false (F)
False
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All of the following structural changes found in the heart occur with the normal aging process, except
A. hypertrophy of the left ventricle. B. decreased elasticity of large vessels. C. decreased valve flexibility. D. atrophy of conduction cells. E. increased elasticity of large vessels.
The spinal cord is encased in and protected by the:
A. spinal canal. B. vertebral body. C. vertebral arch. D. intervertebral disc.
Which of the following is least likely pertaining to an ileal diverticulum (of Merkel)?
A) It occurs near the junction between the jejunum and the ileum. B) It occurs on the antimesenteric border of the ileum. C) It may have a cordlike attachment to the umbilicus. D) If inflamed, it may produce symptoms that mimic those of appendicitis. E) It may be present in both infants and adults.
Subfascial bursae are found where ____ overlie one another
a. ligaments b. muscles c. tendons d. bones