What types of changes cause people's muscles to decrease in size and strength during the aging process?
Fill in the blank(s) with the appropriate word(s).
Skeletal muscles become smaller in diameter, primarily because there is a decrease in the number of myofibrils. The remaining myofibrils retain smaller ATP and glycogen reserves and less myoglobin, which results in a decrease in strength as well as size.
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Chemoreceptors in the carotid and aortic bodies
A. primarily respond to changes in blood oxygen levels. B. become important in the control of breathing when oxygen declines, but carbon dioxide is normal. C. function in conditions such as being at high altitudes. D. produce an increase in the rate and depth of breathing E. have all of these characteristics.
Flexion creases are where
A. arrector pili muscles flex skin hairs. B. skin attaches to flexor muscles. C. skin does not have a dermal layer. D. skin attaches to joints of the fingers.
Which of the following cytoskeleton components moves the chromosomes during cell division?
A) microfilaments B) intermediate filaments C) thick filaments D) microtubules E) basal bodies
Describe the techniques used to verify esophageal placement of an orogastric tube
What will be an ideal response?