Which embryonic structure gives rise to the ductus deferens?
A. Paramesonephric duct
B. Yolk sac
C. Urogenital sinus
D. Gonadal ridge
E. Mesonephric duct
Answer: A
You might also like to view...
As your temperature rises during activity, your body signals blood vessels to constrict
Indicate whether the statement is true or false.
An apple is more toxic than a large quantity of apple seeds
Indicate whether the statement is true or false
What is the most effective means of increasing alveolar ventilation?
a. breathe slowly and deeply b. increase total pulmonary circulation c. increase rapid shallow breathing d. breathe normally
Which of the following events occurs in an erection?
A. Vasoconstriction of arteries leading to erectile tissue of penis B. Engorgement of erectile tissue of penis with blood C. Relaxation of internal sphincter of urinary bladder D. Dilation of venules leading from erectile tissue of penis E. Decrease of blood flow to the penis