Which organ or structure is clearly visible in a 4-week-old embryo?
A) Fingers
B) Eyes
C) Ears
D) Fingers, eyes, and ears are all clearly visible.
Answer: D
You might also like to view...
Insensible water loss includes water lost from the lungs during expiration and water lost from the skin during sweating
Indicate whether the statement is true or false
A person with type A blood has both the A and B antitbodies in their plasma
Indicate whether the statement is true or false
Which of the following would decrease heart rate?
A) increased sympathetic stimulation of SA node B) decreased parasympathetic stimulation of nodal fibers C) increased levels of norepinephrine and/or epinephrine D) faster depolarization of the pacemaker potential E) increased parasympathetic stimulation of nodal fibers.
Exchange of dissolved substances between the blood and the interstitial fluid occurs by ________.
A. diffusion and active transport B. filtration and active transport C. diffusion and filtration D. diffusion