All of the following are actions of testosterone. Which one is the PRIMARY action?
A. sperm production
B. maturation of male reproductive organs
C. development of secondary sex characteristics
D. low voice
Answer: A
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The fingerlike structures of the placenta that form from its fetal portion are known as
A. chorionic villi. B. amniotic villi. C. amniotic stalks. D. chorionic stalks.
When the fulcrum is located between the load and the force, it is called a ________ lever
A) first-class B) second-class C) third-class D) fourth-class E) compound
This figure shows the femur. Which number indicates the gluteal tuberosity?
A. 7 B. 10 C. 2 D. 8 E. 9
Platelets are normally attracted to a
a. collection of white blood cells b. disrupted surface of a blood vessel c. smooth surface d. source of ATP production e. surface where the blood meets the air