The major pumping chambers of the heart are ________
A) both atria B) the right atrium and ventricle
C) both ventricles D) the left atrium and ventricle
Answer: C
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Which of the following is NOT associated with interphase?
A. The cell does what it is designed to do. B. The cell grows. C. The cell does nothing but rest. D. The DNA replicates. E. The centrioles duplicate.
Which of the following muscle groups contract during forced expiration?
a. external intercostals b. sternocleidomastoid c. rectus abdominus d. diaphragm
Cells of the macula densa in the kidney function to:
a. Constrict the diameter of the afferent arteriole supplying the glomerulus b. Reabsorb amino acids from the urine c. React to urinary sodium and chloride and stimulate juxtaglomerular cells to se-crete renin d. Secrete angiotensin to elevate blood pressure during conditions of dehydration e. Secrete sodium into the urine
The fibrous layer of the eye
A) consists of the sclera and the cornea. B) contains the intrinsic eye muscles. C) regulates the amount of light entering the eye. D) consists of the iris, ciliary body, and choroid. E) consists of the retina.