This document is highly rated by Class 11 students and has been viewed 19138 times. Parts of Respiratory System . Printer Friendly. Immediately caudal to the glottis is the larynx, origan of phonation (called the sirinx in birds) Midsagittal section of the head of a cow with nasal septum removed. In comparison to birds, the mammalian respiration is less efficient. rabbit, human). The nasopharynx leads behind into the laryngopharynx. Note the absence of septa and lung lobules. The nasal passage contains nasal bone on dorsal side and palate on the ventral side. The thoracic cavity with air-tight pleural cavities having lungs, is a basket or box-like structure formed dorsally by the vertebral column, ventrally by the sternum and by the ribs on the sides. The right lung is divided into four lobes, i.e., an anterior azygos, right anterior, right posterior and posterior azygos. They are nasal breathers. These muscles are responsible for the pitch and quality of sound produced. Reptilia – Calotes (Lizard): Chordata, Mammalia, Rabbit, Respiratory System of Rabbit, Vertebrates, Zoology. Sexual dimorphism is exhibited in rabbits. Respiratory apparatus 1. The glottis is the opening to the trachea. The soft palate posteriorly hangs down freely into pharynx as a small flap, the uvula. Larynx ends into trachea also known as windpipe. The rabbit uses its prehensile lips to grasp the plant and then bites off the plant with its front teeth, also known as incisors. Low grade respiratory infections Respiratory system anatomy Hypothermia Dehydration Stress Affects of drugs Ability to get the rabbit eating as soon as possible post-operatively Low-grade respiratory infection The majority of rabbits suffer some degree of low-grade respiratory infection all their lives The nasal passage is separated from the buccal cavity by a palate. Both the nasal chambers posteriorly open into the naso-pharynx through the internal nares lie above the soft palate. So, the rabbit can never stay in a way that abdominal contents come into the chest. First, the air comes into the nasal passage. The wall of larynx is supported by four cartilages- thyroid, cricoid and a pair of arytenoids. The respiratory path begins from the Nose and the Nasal passage. Lungs and air passages leading to them a. nostrils i. external openings for the paired nasal cavities Male Reproductive system. Actually, the oxygen which diffuses in the blood combines with the haemoglobin of RBCs to form oxyhaemoglobin, such blood is known as oxygenated. It causes the lungs to expand, which causes the air to rush into the lungs due to more outside atmospheric pressure. Both the nasal chambers have thin scroll- like turbinal bones which increase the surface area of nasal chambers and are lined or covered over by vascular mucous olfactory epithelium. As it goes further down, the trachea splits into two mainstem bronchi, one … Respiratory Passage or Tract: Its function is These are also separated from the buccal cavity by the hard palate. TOS4. Each bronchiole again divides repeatedly to form still finer branches, the alveolar ducts terminating into several small dilated blind air-sacs or infundibulum. 3. Tamilnadu Samacheer Kalvi 10th Science Solutions … Gill slits and gill pouches are absent. 2. In the rabbit, mouth breathing is ineffective. Each bronchus enters into the lung of their side, divides and redivides into smaller secondary and tertiary bronchi. Two sets of muscles, the internal intercostal and external intercostal, are situated between the two successive ribs. The nasal passage opens into internal nares where pharynx is present. Bronchi, bronchioles, and alveoli are present inside the lungs. Each lung is enclosed and suspended in an air-tight compartment, called the pleural cavity. Respiration: Contains 4 processes! During expiration, the internal intercostal muscles placed at right angles to external intercostal muscles contract and the later muscles also relax, thereby the ribs and sternum attain their normal position. Hence, in alveolar air the oxygen content is always lower and the carbon dioxide content is higher than that of atmospheric air. What is the entire process of gas exchange between atmosphere and body cells called It is called respiration. Note that the model mouse respiratory system differs from human in size, distribution of cell types, and the time taken to develop. Ventilation, the movement of air in and out of the lungs, facilitates gas exchange. Though the lymphatic system is a closed system but it does not form a complete circuit of flow in the body. Our mission is to provide an online platform to help students to discuss anything and everything about Zoology. The structures of the system are; nose, pharynx, larynx, trachea, lungs, bronchi, bronchioles, and alveolus. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The floor of laryngopharynx bears a median, vertical, slit-like aperture, the glottis, which leads into larynx. Oxygen from the air diffuses in the blood and CO2 from the blood diffuses out in the air simultaneously through the thin alveolar wall. In the lungs, the bronchi … The respiratory organs in rabbit are a pair of lungs. Major functions of the respiratory system: a. Nasal chamber: The air passes through the external nares into two large respiratory passages, which are hollow cavities present above the plate. Respiratory medium comes in contact with respiratory surface and gaseous exchange takes place between respiratory medium and blood or any other transport medium through respiratory surface by simple diffusion. Quizlet flashcards, … Eman ... lecture notes etc. It acts on organ of smell. Ok, are you on board so far? The basket is closed behind by a dome-shaped muscular sheet, the diaphragm, which is attached with the vertebral column on one hand and sternum on the other. This organ is responsible for sound production. Sometimes right lung has more lobes than left lung and hence becomes asymmetric (e.g. Exercise 7 Respiratory System Mechanics. Rabbits are obligate nose breathers due to their epiglottis positioned rostrally to the soft palate. Here are some other important points to note about the rabbit skeletal system: In this article we will discuss about the respiratory system of rabbit with the help of suitable diagrams. The palate divides the original buccal cavity into a dorsal nasal passage and ventral food passage. The male and female sexes are separate and are morphologically different. To define respiration, ventilation, alveoli, diaphragm, inspiration, expiration, and partial pressure 3. Oxygen (O 2 ) diffuses into the cells where it is used for metabolic reactions that produce ATP, a high-energy compound. Respiratory System Anatomy and Physiology – Part 3. The pleural cavity is lined by peritoneum and filled with a watery pleural fluid. The lungs are paired, pinkish, soft, spongy and elastic and vascular organs. Welcome to NotesOnZoology.com! Because rabbits are herbivores, they eat a variety of plants and in large amounts. BIOSCIENCE's mission is to be your most trusted ally in your pursuit of health and well-being. The respiratory system must perform many functions, preferably while expending minimal energy. Pair of lungs are the sole respiratory organs, which are situated in the thoracic cavity, one on either side of heart. It also holds the bacteria and dust particles coming in with air. It makes only 8% of the body weight, as compared to 12 to 13% in cats. They […] Human respiratory system, the system in humans that takes up oxygen and expels carbon dioxide. Image from Purves et al., Life: The Science of Biology, 4th Edition, by Sinauer Associates (www.sinauer.com) and WH Freeman (www.whfreeman.com), used with permission. At the same time the radially arranged muscles of the diaphragm contract, thereby it becomes flattened. The larynx or voice-box is a small dilated chamber which is the sound producing organ of rabbit. The Respiratory system is a tube opening to the outside world on one end, and along the way it divides and ends up in tiny, grape-like sacs, which interface with the blood. In rabbits with strong immune systems, these bacteria can reside in the nasal cavity and upper respiratory tract, and are kept in check by the rabbits’ defense system. The alveoli are the site of gaseous exchange between external airs with the blood. What percent of air is oxygen? Adrenal . The primary function of the respiratory system is to deliver oxygen to the cells of the body’s tissues and remove carbon dioxide, a cell waste product. Left bronchi open in the left lung and right bronchi open into the right lung. The respiratory system is made up of more than just the lungs; it also includes your nose, throat, larynx, windpipe, bronchi, alveolar ducts, and respiratory membrane. This is termed as Dirhynous condition. Respiratory problems may be caused by disorders of other symptoms and so it may be appropriate to refer to Respiratory System History and Examination. Our analysis suggests that a 25% lower level of pressure generation by the airways of the High-CPAP animals could account for the lower respiratory system responsiveness observed in these rabbits in vivo. In rabbit, at the apex of nose, a pair of external-nares are present. The respiratory system consists of multiple bones and cartilaginous structures which all help to protect the soft tissues of the respiratory organs [7]. © All rights reserved Biokaryon 2017, Design & Developed by Mindfact Software Development Pvt. Its suspension is from the site of entry of bronchus and from this also pulmonary artery and vein, and nerves enter the lung. The nasal passage contains nasal bone on dorsal side and palate on the ventral side. The function of the respiratory system is to deliver air to the lungs. The external nares lie a little in front of eyes. In man, the larynx is somewhat protruded in the neck and called Adam’s apple. Thyroid . Note whether the patient appears to be pyrexial (check their temperature). Human Respiratory System. This website includes study notes, research papers, essays, articles and other allied information submitted by visitors like YOU.