Identify the structures labeled "4."
polar bodies
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Paired structures made of microtubules that are perpendicular to each other are called the
A) chromosomes. B) ligand receptors. C) centromeres. D) nucleoli. E) centrioles.
The renal corpuscle consists of
A. Bowman's capsule and the renal pelvis. B. the glomerulus and Bowman's capsule. C. the renal pelvis and the renal tubules. D. afferent and efferent arteriole. E. the proximal convoluted tubule and the glomerulus.
The acrosome cap contains
A. nutrients to sustain the sperm. B. mitochondria to provide energy for movement. C. testosterone. D. enzymes to allow penetration into the oocyte. E. buffers to neutralize the acidity of the female reproductive tract.
REM sleep is associated with ________
A) decreased oxygen use, especially in the cerebral cortex B) temporary skeletal muscle inhibition except for ocular muscles and diaphragm C) decreased vital signs, such as heart rate and blood pressure D) decreased activity of the brain, especially the cerebral cortex