Independent Activity Unit # 4 Lesson 6
d 1. What is the function of the umbilical cord?
o The umbilical cord is a flexible cord-like structure, which connects the fetus pig (at
s the naval) with the placenta. The placenta is a pancake-shaped organ that is
_ attached to the inside of the mother's uterus. The umbilical cord contains arteries
t and veins which deliver nutrient rich blood, and oxygen to the baby. The umbilical
cord also removes carbon dioxide, along with any other wastes that the baby pig
h produces while in the womb. Without this cord, the baby could not survive.
t 2. State the function of the following organs: stomach, liver,
r small intestine, gall bladder, pancreas, large intestine,
a and spleen.
h Stomach– responsible for storing food and prepares for digestion
Liver– metabolizes many drugs (including alcohol) and makes a substance similar
a detergent for the digestion of fat called bile
_ Small Intestine– the first part of the small intestine is duodenum, it is a major
h location for food digestion; the second and third part are called the jejunum and
v ileum, here further digestion occurs and nutrients are absorbed
e Gall bladder– collects bile, which is sent to the initial portion of the small intestine
_ (duodenum) via the cystic and common bile ducts
Pancreas– pancreas makes digestive enzymes, which are carried by the pancreatic
c duct to the duodenum. The pancreas also makes the hormone insulin, which
a promotes sugar uptake from blood
r Large intestine– the large intestine reabsorbs water from digested food and the
i remaining undigested material is sent to the rectum
l Spleen– involved with maturation and processing of immune cells that protect the
a body. Spleen filters blood, removes old or damaged platelets and red blood cells,
stores blood, and forms some types of white blood cells
_ 3. What is the function of the mesentery?
r Mesentery are thin sheets of tissue that hold the small intestine in place; it holds
i mainly the jejunum and ileum. A large number of blood vessels are present within
n the mesentery which nourish the small intestine by providing it with a blood supply.
g If the mesentery was not present, the small intestine could kink up, or fold up and
s cause a blockage of food, similar to a bend in a water hose.
i 4. Why does the left ventricle contain more muscle than the
x right ventricle?
z The right ventricle only pumps deoxygenated blood to the lungs through the
1 pulmonary arteries. Whereas, the left ventricle pumps oxygenated blood to the
d entire body via the aorta. The entire body is very large when compared to just the
lungs. Not only does the left ventricle pump larger amo