How do cardiac muscle fibers differ from the muscle fibers of the arms and legs?
A) Routine involuntary movement
B) Longer muscle fibers than the limbs
C) Poorer supply of blood than the limbs
D) Non-striated fibers rather than striated fibers
A
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The afferent arteriole in the kidney
A) is also known as the descending limb of the nephron loop. B) empties directly into the calyx of the medulla. C) carries blood to the glomerulus. D) carries blood from glomerular capsule to the nephron loop. E) returns blood to the inferior vena cava.
Identify the highlighted liver lobe.
Which of the following cell organelles is/are not surrounded by membranes? 1. Lysosomes; 2. Peroxisomes; 3. Mitochondria; 4. Flagellae; 5. Ribsomes
A. 1 and 2 B. 1 and 3 C. 4 and 5 D. 1 and 5 E. 2 and 3
Hydrogen bonds form between molecules containing _________ bonds; the hydrogen bond is between a hydrogen atom of one molecule and a partially _________ charged atom of another
A. polar covalent; negatively B. nonpolar covalent; negatively C. nonpolar covalent; positively D. polar covalent; positively E. ionic; positively