Fetal Pig Respiratory System. What works together to allow gas exchange to occur at the cellular level? Whats the primary function of the Respiratory System? allow lungs to take oxygen and dispose of waste products through inhaling and exhaling. an active motion causing the diaphragm to contract.
Why are the lungs spongy in a fetal pig?
Why do the lungs feel spongy in a fetal pig? The lungs feel spongy because there are millions of alveoli in the lungs. These alveoli are made so that the maximum surface area can take in oxygen for deoxygenated blood. Because there are little spaces between the alveoli, they do not make a solid feeling organ, they make a spongy feeling one. ...
What tissue covers the lungs in a fetal pig?
What kind of tissue covers and protects the lungs? Pleura- connective tissue. Why do the lungs appear collapsed in the fetal pig? Because the fetal pig's lungs have not been filled with air, the fetal pig does not need to carry out gas exchange through breathing yet because the mother does that for it, so the lungs are deflated ...
Where is the esophageal found in a fetal pig?
Where is the esophagus in a fetal pig? No digestion actually occurs it simply carries food from the mouth to the stomach. To find the esophagus, open up the thoracic cavity and you should be able to see the tube run from the neck all the way to the stomach. Full answer is here.
What is the ileum in a fetal pig?
• Jejunum & Ileum: the coiled remainder of the small intestine • Cecum: the thumb like blind pouch at the junction of the ileum and colon • Colon (large intestine): usually darker, thicker, coiled (large) intestine • Rectum: the last one to two inches of large intestine leading to the anus FETAL PIG LAB FOUR: Urinary System
What does the respiratory system do in fetal pig?
Air from the oral and nasal passages enters the lungs via the trachea which branches into two bronchi as it enters the lungs. The bronchi branch further inside the lungs becoming bronchioles which terminate at alveoli, clusters of air sacs where oxygen and carbon dioxide are exchanged with tiny blood vessels.
What is a pig's respiratory system?
The lobar and bronchial anatomy of pigs is similar to that of humans. The porcine left lung is similar to the human left lung because it consists of a cranial lobe and a caudal lobe. The left cranial lobe bronchus divides into cranial and caudal segmental bronchi.
Which organ helps in respiration in a fetal pig?
Respiratory System Follow the trachea to where it branches into two bronchi and observe that each bronchus leads to a lung. The left lung contains three lobes and the right lung contains four. Each lung is located in a body cavity called a pleural cavity.
What is respiratory system in simple words?
The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels. The muscles that power your lungs are also part of the respiratory system. These parts work together to move oxygen throughout the body and clean out waste gases like carbon dioxide.
How are the fetal pig lungs different from infant human lungs?
The porcine lungs have two lobes on the left side and four lobes on the right 2, 3, whereas humans have three right and two left lobes. On the left they are designated as left cranial and caudal lobes and on the other side as right cranial, right middle, right caudal and right accessory lobes.
Does the diaphragm work in a fetal pig?
The diaphragm isn't used by the fetal pig because gas exchange occurs through the umbilical cord. The diaphragm in adult pigs moves up and down changing air pressure in the chest cavity causing air to move into and out of the lungs.
What is the function of the respiratory diaphragm?
Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.
What is the airway from mouth to lungs in a fetal pig?
Locate the epiglottis, a cone-shaped structure which closes when a pig swallows. The small opening in the center of the epiglottis is the glottis and it leads to the trachea and then to the lungs.
Do pigs breathe through their mouth or nose?
Can humans? Mice, rats and pigs all share a secret superpower: They can all use their intestines to breathe, and scientists discovered this by pumping oxygen up the animals' butts.
What is the function of the trachea in a pig?
It is a tubular organ formed by cartilage rings which is a part of the respiratory system, and goes from the larynx to the bronchi. Its function is to allow air exchange between the lung and the outside.
What are the respiratory systems of pigs?
The respiratory system of the pig commences at the nostrils which lead into two nasal passages. These contain the dorsal and ventral turbinate bones. (Fig.1-8). The ventral turbinates consist of four thin main bones, two on each side separated by a cartilaginous septum. You can imagine these as four hair curlers placed inside the nose. The respiratory tract is lined by a smooth membrane called a mucous membrane because it is bathed in a sticky mucus. It is also covered with minute hair like structures which are able to brush the mucous across the surface by their wavy motion. They move the mucous in the nose, bronchial tree and trachea to the throat where it is swallowed. The air breathed in through the nose is warmed by the turbinate bones which, because of their scroll-like shape, cause turbulence. This throws out the larger of the small particles so that they stick to the mucus and are swept to the throat. The many branches of the bronchi as they decrease in diameter have a similar effect on more minute particles. The mucus elevator then carries them to the throat. Only the vary smallest particles reach the alveoli where the alveolar macrophages engulf and remove them. Internally, the nasal passages open into the pharynx (throat) which is a common passage for food and air. The food is swallowed down the oesophagus and the air is sucked into the larynx at the back of the throat. The larynx (voice box) controls inspiration and expiration. It opens into the trachea which passes down into the chest where it divides into two bronchi. The bronchi branch into smaller bronchi and continue to branch gradually reducing in size to become bronchioles which terminate in very tiny air sacs called alveoli. Oxygen is passed from the alveoli into the blood stream and carbon dioxide is passed out. The lungs are divided into seven lobes as shown in Fig.1-8.
How many breaths per minute in pigs?
Respiratory rate - This varies from 20-40 breaths per minute in piglets and growing pigs and 15-20 per minute in sows. Rhinitis - Describes any form of inflammation to the delicate mucous lining of the nose. Some agents such as dust and gases may cause it but there is no long-term damage to the nose structure.
What is Pasteurella in pigs?
Pasteurella - Bacteria found as normal inhabitants of the upper respiratory tract. They often cause secondary infections, for example, following Mycoplasma hyopneumoniae infection. There are two common species P. haemolytica and P. multocidia the latter being the common one in pigs. Pleurisy - Also called pleuritis.
What causes sneezing in pigs?
Sneezing always occurs with rhinitis. Salmonella choleraesuis - A bacterium specific to the pig causing generalised salmonellosis and pneumonia. Swine influenza (SI) - A virus infection which produces clearly demarcated dark purple red lesions in the lungs. Tracheitis - Inflammation of the trachea (windpipe).
Why is the respiratory tract lined with mucous membranes?
The respiratory tract is lined by a smooth membrane called a mucous membrane because it is bathed in a sticky mucus. It is also covered with minute hair like structures which are able to brush the mucous across the surface by their wavy motion.
Where do the smallest particles of food and air go?
Only the vary smallest particles reach the alveoli where the alveolar macrophages engulf and remove them. Internally, the nasal passages open into the pharynx (throat) which is a common passage for food and air. The food is swallowed down the oesophagus and the air is sucked into the larynx at the back of the throat.
