What is tubular reabsorption?
A. The process where the nephron returns water and some filtered molecules to the blood.
B. The reabsorption of blood cells in the nephron into the body.
C. The passage of water and ions into the filtrate during filtration in the nephron.
D. The absorption of proteins into the filtrate which later becomes urine.
E. The transport additional solutes from the blood into the filtrate by tubule cells.
A
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The respiratory system makes it possible for the body to conduct gas exchange; this process is also facilitated by the ________ system, which transports the gasses through the body.
Fill in the blank(s) with the appropriate word(s).
Which of the following functions of the skeletal system is most affected by gravity?
A. protection of internal organs B,. body support C. blood cell production D. lipid storage
Which of the following is atrophy?
A. Some muscle is replaced by fibrous tissue. B. Muscle mass decreases with age. C. Our diet and lifestyle solely determine the rate and extent of muscle loss. D. Fat is deposited in muscle tissue and muscle fibers shrink.
The pancreas is located retroperitoneally and _________________________.
a) superior to the diaphragm b) posterior to the stomach c) inferior to the urinary bladder d) posterior to the cecum