The interventricular septum forms a dividing wall between the
a. left atrium and left ventricle.
b. left atrium and right atrium.
c. right ventricle and left atrium.
d. right atrium and right ventricle.
e. left and right ventricles.
Answer: e. left and right ventricles.
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A) acetycholine B) amino acid C) biogenic amine D) ATP and other purines E) nucleic acid
In ________, ions or molecules move in opposite directions.
A. ionport B. symport C. uniport D. antiport E. comport
Which type of tissue makes up the brain and spinal cord?
a. smooth b. nervous c. skeletal d. muscle
The blood-testis barrier
A. feeds sustentacular cells. B. is formed by the primary spermatocytes. C. isolates sperm cells from the immune system. D. keeps blood from engorging the testis. E. nourishes the developing spermatozoa.