Which of the following drains the anterior surface of the right ventricle and empties directly into the right atrium?
A) middle cardiac vein
B) great cardiac vein
C) anterior cardiac veins
D) small cardiac vein
E) posterior veins of left ventricle
Answer: C) anterior cardiac veins
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Nicotine poisoning differs from muscarine poisoning in that
A) it causes vomiting. B) it causes salivation. C) it causes sweating. D) it causes skeletal muscle convulsions. E) it causes diarrhea.
Which of the following does not describe non-sex chromosomes?
A) diploid B) haploid C) produced by mitosis D) genetically identical E) called somatic cells
The nose contains a single septal cartilage. How many alar cartilages are in the nose?
A. One B. Two C. Three D. Four
The erectile tissue that surrounds the urethra is the
A) corpus spongiosum. B) corpus cavernosum. C) penile urethra. D) membranous urethra. E) glans penis.