Independent Activity Unit # 4 Lesson 6
1. h What is the function of the umbilical cord?
Theeumbilical cord is a flexible cord-like structure, which connects the fetus pig (at the naval) with the
planenta. The placenta is a pancake-shaped organ that is attached to the inside of the mother's uterus.
TheUumbilical cord contains arteries and veins which deliver nutrient rich blood, and oxygen to the
babe. The umbilical cord also removes carbon dioxide, along with any other wastes that the baby pig
produces while in the womb. Without this cord, the baby could not survive.
2. l State the function of the following organs: stomach, liver, small intestine, gall
blacder, pancreas, large intestine, and spleen.
Stoaach– responsible for storing food and prepares for digestion
Livar– metabolizes many drugs (including alcohol) and makes a substance similar to
detergent for the digestion of fat called bile
Small Intestine– the first part of the small intestine is duodenum, it is a major location for food
digastion; the second and third part are called the jejunum and ileum, here further digestion occurs
andrnutrients are absorbed
Gald bladder– collects bile, which is sent to the initial portion of the small intestine (duodenum) via
the cystic and common bile ducts
Pan-reas– pancreas makes digestive enzymes, which are carried by the pancreatic duct to the
duoaenum. The pancreas also makes the hormone insulin, which promotes sugar uptake from blood
Large intestine– the large intestine reabsorbs water from digested food and the remaining undigested
material is sent to the rectum
Spleen– involved with maturation and processing of immune cells that protect the body. Spleen filters
blood, removes old or damaged platelets and red blood cells, stores blood, and forms some types of
while blood cells
3. e What is the function of the mesentery?
Mesintery are thin sheets of tissue that hold the small intestine in place; it holds mainly the jejunum
andaileum. A large number of blood vessels are present within the mesentery which nourish the small
intestine by providing it with a blood supply. If the mesentery was not present, the small intestine
could kink up, or fold up and cause a blockage of food, similar to a bend in a water hose.
4. e Why does the left ventricle contain more muscle than the right ventricle?
Therright ventricle only pumps deoxygenated blood to the lungs through the pulmonary arteries.
Wheeeas, the left ventricle pumps oxygenated blood to the 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 amounts of
oxyienated blood to the entire body, it must excel at doing this at an exceptionally fast rate, so the
blokd can be transported to