Examlex
A frame of the HST deep field image of distant galaxies is shown.By means of optical and radio telescopes astronomers can see distant objects like these as they ...
Fetal Circulation
The circulatory system in a fetus that includes special structures like the umbilical cord, ductus arteriosus, and foramen ovale, facilitating the exchange of oxygen and nutrients between the fetus and mother.
Arterial Duct
A blood vessel in fetuses that connects the pulmonary artery to the descending aorta, allowing blood to bypass the lungs.
Umbilical Cord
Cord connecting the fetus to the placenta, through which blood vessels pass.
Umbilical Arteries
Blood vessels that carry deoxygenated blood from a fetus to the placenta during pregnancy.
Q5: An observer on Pluto who sees Charon
Q6: Which one of the following present-day objects
Q13: The nebular theory of the origin of
Q19: Double-lobed radio galaxies appear to be emitting
Q21: If the red shifts of quasars arise
Q23: The oldest,easily identifiable fossils appear in sedimentary
Q33: Mars has a sufficient mass and a
Q37: Saturn rotates differentially,which in the case of
Q56: _ are protostars with insufficient mass to
Q57: Which of the following is evidence for