The umbilical vein carries
A. waste and carbon dioxide toward the placenta.
B. oxygen and nutrients toward the placenta.
C. waste and carbon dioxide toward the fetus.
D. oxygen and nutrients toward the fetus.
Answer: D
You might also like to view...
Which body region is controlled by the largest area of the motor cortex?
A. Shoulder B. Fingers C. Toes D. Trunk E. Neck
Answer the following statements true (T) or false (F)
1. The iris is actually an involuntary muscle in the choroid layer. 2. In very dim light the circular fibers of the iris contract, causing the pupil to dilate. 3. Presbyopia is a term for the nearsightedness of old age. 4. Cataracts may be caused by exposure to the ultraviolet radiation of the sun. 5. A cataract is a condition in which the cornea becomes less transparent and “milky” in appearance.
Which of the following is a visceral sensation?
A. Touch B. Pain C. Temperature D. Balance E. Proprioception
Which of the following would be most associated with housing the special sense organs?
A) the cranial bones B) hyoid bone C) the facial bones D) the bones of the inner ear