What is ultimately the fate of fontanels in a child or an adult skull?
A) They do not change.
B) They ossify, and in time become sutures.
C) They become thinner fibrous regions between cranial bones.
Answer: B
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"Formed elements" are
A) sodium and potassium. B) blood cells and platelets. C) blood and lymph. D) serum and plasma.
Sperm cell maturation is stimulated by ____
a. aldosterone b. estrogen c. testosterone d. cortisol
Which specific event triggers the release of calcium from the sarcoplasmic reticulum?
A. Calcium binds to troponin. B. Myosin binds to actin. C. An electrical signal travels down the transverse tubules. D. Acetylcholine is released from receptors.
In whom are mammary glands found?
A. In lactating females B. In lactating and non-lactating females C. In non-lactating females and males D. In non-lactating females