Which structure is the male copulatory organ?
A) Prostate gland
B) Urethra
C) Testis
D) Penis
Answer: D
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Once implantation takes place the pre-embryo is divided into two general areas. Which of these two actually gives rise to the embryo?
A. Embryoblast B. Trophoblast C. Syncytiotrophoblast D. Cytotrophoblast E. Morula
Multiple arteries joined in order to serve a single capillary network are called
A) convergents. B) arteriole beds. C) portals. D) connexons. E) collaterals.
It is important to ensure that your diet is adequately rich in vitamins because ________
A) very few foods contain vitamins B) most vitamins are coenzymes needed to help the body utilize essential nutrients C) all vitamins are water soluble and pass out of the body too quickly to ensure utilization D) vitamins provide protection against the common cold
Groups of similar cells and extracellular products that carry out a common function are called
A. matrices. B. organ systems. C. tissues. D. organs.