Which of the following is a not a true statement regarding the countercurrent multiplication system?
A) The thin limb of the nephron loop is permeable to water.
B) The thick limb of the nephron loop is permeable to solutes.
C) Osmotic concentration in the nephron loop decreases as fluid flows toward the bottom of the loop.
D) Tubule fluid arrives at the DCT at about 100 mOsm/L.
E) The maximum solute concentration is about 1200 mOsm/L.
C
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Stages of the cell cycle unfold in the following order:
A. differentiation, cytoplasmic division, mitosis, interphase. B. interphase, mitosis, cytoplasmic division, differentiation. C. interphase, differentiation, cytoplasmic division, mitosis. D. mitosis, interphase, cytoplasmic division, differentiation.
A shallow depression on the surface of a bone is called a ________.
A) tuberosity B) trochanter C) fossa D) foramen E) tubercle
Thigh muscles that attach to the medial side of the pelvis ________ the thigh at the hip joint.
A. adduct B. flex C. abduct D. abduct and rotate E. extend
Which of these occurs during an isometric contraction of a skeletal muscle?
A. The I bands shorten and the A bands stay the same length. B. The thick and thin filaments slide past each other. C. Sarcomere length does not change significantly. D. The A bands shorten and the I bands stay the same length. E. Cross-bridges lock onto actin, similar to what occurs in rigor mortis.