The urinary bladder is a muscular sac that stores urine produced by the kidneys before it is excreted from the body. In mammals, including humans and fetal pigs, the urinary bladder is located in the pelvis.
During fetal development, the urinary bladder begins to form around the third week of gestation. Initially, it is a small, simple sac-like structure that is connected to the developing kidneys by a pair of ureters. As the fetus grows and develops, the urinary bladder becomes more complex and begins to take on its characteristic shape.
In a fetal pig, the urinary bladder is located in the pelvic cavity, posterior to the pubic bones. It is a relatively small organ, measuring only a few centimeters in length and width. The walls of the urinary bladder are composed of smooth muscle tissue, which allows the bladder to contract and relax as it fills and empties.
The main function of the urinary bladder is to store urine produced by the kidneys until it is ready to be excreted from the body. Urine is produced when the kidneys filter waste products and excess fluids from the blood. The urine is then transported to the urinary bladder through the ureters, which are long tubes that connect the kidneys to the bladder.
As the urinary bladder fills with urine, the smooth muscle walls of the organ begin to stretch and expand. This stretching stimulates the bladder's stretch receptors, which send signals to the brain indicating the need to urinate. When the individual is ready to urinate, the muscles of the urinary bladder contract, expelling the urine through the urethra and out of the body.
In fetal pigs, as in humans, the urinary bladder is an important organ that plays a vital role in the body's ability to maintain homeostasis and eliminate waste products. Understanding the development and function of the urinary bladder can provide insight into the overall functioning of the urinary system and the body as a whole.
The spleen is an elongate, flattened, brownish organ that extends along the posterior part of the stomach ventral to above the pancreas. Where is the pancreas located in a pig? Group enriched genes are defined as genes showing a 4-fold higher average level of mRNA expression in a group of 2-5 tissues, compared to all other tissues. The combination of the two categories is shown in table 1. These tubes widen and lead to the kidney; they are the connector from the kidneys to the bladder. It contains a lubricating fluid and isolates the heart from body movements such as the expansion and contraction of the nearby pleural lung cavity.
CONTINUE READING BELOW Where is the urinary bladder located? The large hard structure attached to the trachea is the larynx. Contraction of the diaphragm forces air into the lungs. The bladder is the same, but the urethra is not. As a result, a structure shown in one photograph may look different than the same structure shown in another photograph. Pig kidneys are a pair of kidneys that are located on the dorsal side of the abdomen.
What is the thickness of the urinary bladder of the fetal pig?
There are small differences in a few organs. The medulla is the innermost part of the kidney, it is divided into sections known as the renal pyramids. The urinary bladder is a hollow organ, which absorbs, stores and releases urine, and is thereby exposed to enormous deformation. Lift the stomach and identify this light-colored organ. It houses bacteria used to digest plant materials such as cellulose. What does the urethra look like? Diaphragm, heart, lungs, pericardium.
Insert one blade of scissors through the body wall on one side of the umbilical cord and cut posteriorly to the base of the leg as shown in the first photograph below. Locate the cecum, a blind pouch where the small intestine joins the large intestine. The kidney is part of the urinary system that filters blood, regulates electrolytes, and regulates blood pressure. Use the probe to peel away muscle tissue until the thymus gland on each side of the trachea is exposed. Find the bile duct that leads to the small intestine.
Where is the urinary bladder located in a fetal pig?
In the photograph below, the heart and blood vessels of the neck region have been removed so that the trachea can be seen more clearly. Examine the diaphragm, a sheet of muscle that stretches across the abdominal cavity and separates it from the thoracic cavity where the lungs are located. The pancreas is made up of the exocrine and endocrine gland that help break down carbs, fats, proteins, acids, and help regulate glucose in blood. Carefully, peel the skin away from the incision in the neck region using a blunt probe a needle or the point of scissors will do if a blunt probe is not available. Digestive System You have already seen how the esophagus leads from the pharynx through the neck region. For example, Table 2, The 10 genes with the highest level of enriched expression in kidney. Pigs have 2 kidneys that are located on either side of the spine.
Shortly after birth, the ductus arteriosus closes and blood in the pulmonary artery goes to the lungs instead of the body. The cecum is a blind pouch where the small intestine joins the large intestine. The body is the large area situated between the apex and the fundus. The teats in female pigs are responsible for production of milk. Circulatory system The drawing below shows some of the major arteries that carry blood to the body. The empty bladder lies almost entirely within the pelvic cavity, but with distention extends into the abdominal cavity. Table 4, The 4 genes classified as tissue enriched in urinary bladder.
Respiratory System Observe how the diaphragm attaches to the body wall and separates the abdominal cavity from the lung pleural and heart pericardial cavities figure 16 and 18 below. Large intestine, pancreas, small intestine, spleen, stomach. The ureter is the duct that connects it to the bladder. The abdominal aorta, renal arteries, and bladder excrete the waste to the outside of the fetal body. The umbilical cord contains blood vessels that bring nourishment from the placenta in the mother's uterus and carry away waste from the fetus.
The ureters carry the urine away from kidneys to the urinary bladder, which is a temporary reservoir for the urine. Use the probe to peel away muscle tissue until the thymus gland on each side of the trachea is exposed. Urine passes through the urethra. An incision was made on the side of the neck to enable the injections. Male: urogenital opening, penis, anus. Where is the bladder located quizlet? The surrounding tissues have been separated to reveal the thyroid gland. Identify the small intestine and large intestine.