Why do arteries have an interior ring of smooth muscle

What glands are found between Rugae?

The oxyntic glands, comprising 75% of the gastric glands , secrete HCl, intrinsic factor, mucus, and pepsinogen. The pyloric glands cover the gastric antrum and pylorus and contain G-cells that secrete gastrin into the circulation. The rugae are folds in the stomach lining.

Why is the trachea constructed with rings of cartilage fetal pig?

In the trachea , or windpipe , there are tracheal rings , also known as tracheal cartilages. Cartilage is strong but flexible tissue. The tracheal cartilages help support the trachea while still allowing it to move and flex during breathing. These are the first and last rings in the trachea .

What must occur for the lungs to expand so that you can inhale?

When you breathe in, or inhale , your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale .

What is the function of the Rugae in a fetal pig?

The folds inside the stomach are the rugae, which expand and contract when the stomach takes in food. The rugae are comparable to the way an accordion gets bigger and smaller. The purpose of the Rugae is to increase the surface area contact of the food to the stomach , so more food is digested at one time.

What contains Rugae?

The wall of the bladder contains folds called rugae , and a layer of smooth muscle called the detrusor muscle. As urine fills the bladder, the rugae smooth out to accommodate the volume.

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Where is Rugae found in the digestive system?

The gastric folds (or gastric rugae ) are coiled sections of tissue that exist in the mucosal and submucosal layers of the stomach .

What organ does the umbilical vein lead to?

placenta

Which part of the digestive system is just dorsal to the trachea?

The esophagus is shown to the left of the trachea (it has been moved from its normal position dorsal to the trachea ).

Why does the esophagus not have cartilage rings?

If there were cartilages in the back as like that at the front, it would’ve been very difficult for the oesophagus to dilate during the passage of food. So, that is the reason why there’s cartilage on the front side while the backside lacks that layer.

What is the proper term for breathing?

Breathing (or ventilation) is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly by bringing in oxygen and flushing out carbon dioxide.

Why is there an advantage for female pigs to have?

The advantage for female pigs to have long uterine horns and a small uterine body is so they can have more babies at one time. The function of the nephrons in the pig kidneys is to remove impurities and water in the blood.

How do you inhale and exhale properly?

Inhale slowly through your nose, feeling your stomach expand to press into your hand. Keep the hand on your chest as still as possible. Engage your stomach muscles and draw them toward your spine as you exhale using pursed lips. Again, keep the hand on your upper chest as still as possible.

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How can you tell if a pig is male or female?

You can tell the sex of pigs much like you would a dog. Female pigs squat and urinates from under the tail and a male urinates from under his belly area. The problem is that most don’t have time to stand around and look. Your shelter should never adopt out an intact male or female .

Why is the fetal pig’s stomach empty?

These ridges inside the stomach are called rugae and increase the area for the release of digestive enzymes. The stomach may not be empty because fetal pigs swallow amniotic fluid. Fetal pigs receive their nourishment from their mother through the umbilical cord.

Which membrane separating the body cavities must be cut through to expose the pig intestines?

The thoracic cavity and the abdominal cavity are separated by the diaphragm . Note the many membranes lining the coelom and holding the organs in place. Look for these structures in the thoracic cavity : Lungs: they have several lobes.

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