umbilical arteries: two arteries, carry deoxygenated blood from fetus to placenta. umbilical vein: a single large vein, carries oxygenated blood from placenta to fetus. allantoic duct: channels urine to the allantois, an extra-embyronic sac.
Does a fetal pig have an umbilical cord?
Fetal pigs receive their nourishment from their mother through the umbilical cord. 6. Identify the first part of the small intestine, the U-shaped duodenum, which connects to the lower end of the stomach.
Where are the umbilical arteries in a fetal pig?
It runs deep into the pelvis. The umbilical arteries are branches of the internal iliac artery. Because the umbilical arteries are very large, the proximal part of the internal iliac arteries is also very large. The distal part (after the umbilical artery branch) of the internal iliac arteries is much smaller.
How many veins do pigs have?
The marginal ear veins are the only veins that are easily visible on pigs of any size. Usually there are three prominent veins. The lateral or central vein is usually the largest of these.
What does the umbilical cord do for a fetal pig?
Umbilical cord – This extends from the abdomen of the fetus to the placenta of the mother. It functions in the bringing of food and oxygen to the fetus and the removal of wastes.
How many nipples does a pig have?
The number of nipples a pig has vary, but on average, a pig has around 12-14 nipples.
How many hooves does a fetal pig have?
There are four hoofed toes on each foot, with the two larger central toes bearing most of the weight, but the outer two also being used in soft ground. They are quadruped, walking on all fours. Epidermal skin is on surface & cut in dissection. The skin has appendages, most common is hair.
What is the umbilical vein?
The umbilical vein is the conduit for blood returning from the placenta to the fetus until it involutes soon after birth. The umbilical vein arises from multiple tributaries within the placenta and enters the umbilical cord, along with the (usually) paired umbilical arteries.
How does blood circulate through a fetal pig?
Deoxygenated blood enters the heart at the right atrium via the superior vena cava (vein), then travels into the right ventricle which pumps the blood out to the lungs via the pulmonary trunk (artery). After oxygenation, the blood travels back to heart via the pulmonary veins and enters the left atrium.
How many lobes does a fetal pig liver have?
There are small differences in a few organs. Liver – the human liver has four lobes: right, left, caudate and quadrate. The fetal pig liver has five lobes: right lateral, right central, left central, left lateral, and caudate.
How many pulmonary veins does a pig have?
(See Fig. 43 – Fetal Circulation for a complete description of the fetal circulatory pattern.) Pulmonary veins — These 4 vessels can be traced returning from the lungs to the left atrium and should be injected with red dye (why should there be red dye in a vein?).
What separates the ventricles of the fetal pig heart?
The ventricles are separated by the interventricular septum. The atria are also separate from one another, so that the de-oxygenated blood of the right chambers is kept separate from the oxygenated blood of the left chambers.
How much blood does a pig have?
|Animal||Blood volume (ml/kg)|
How does fetal pig blood circulation differ from blood circulation in a fully developed pig?
Fetal circulation is different from adult circulation. In the fetus, blood doesn’t get oxygenated in the lungs; it gets oxygenated at the placenta. The umbilical arteries carry blood from the fetus to the placenta. The umbilical vein carries blood from the placenta back to the fetus.
Where does the umbilical vein lead to in a pig?
Terms in this set (41)
How many digits are present? To what organ does the umbilical vein lead? How any lobes does the liver have? where is the mesentery attached?