lack of it) determine the individual’s sex. But did these chromosomes have other functions as well? The answer came from the first giant of 20th-century genetics‚ the American Thomas Hunt Morgan. In decades of research with the simple fly Drosophila melanogaster‚ Morgan and his colleagues and students discovered what the X and Y chromosomes do and Morgan developed the theory of the gene. Building on Mendel’s work‚ Morgan found that the fly’s eye color is transmitted on the X chromosome a red eye
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Canal- Provides a route for blood vessels‚ nerves‚ and other pulp structures to enter the pulp cavity of the tooth. Salivary Glands * Three pairs of salivary glands empty their secretions into the mouth. Parotid glands- lie anterior to the ears. Mumps- a common childhood disease‚ is an inflammation of the parotid glands. * Submandibular glands and Sublingual glands empty their secretion into the floor of the mouth through tiny ducts. * Saliva is a mixture of mucus and serous
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References: Chaabihi‚ H.‚ Fournier‚ D.‚ Fedon‚ Y.‚ Bossy‚ J.P.‚ Ravallec‚ M.‚ Devauchelle‚ G.‚ C´ rutti‚ M.‚ 1994. Biochemical characterization of e Drosophila melanogaster acetylcholinesterase expressed by recombinant baculoviruses. Biochem. Biophys. Res. Commun. 203‚ 734–742. Chaize‚ B.‚ Winterhalter‚ M.‚ Fournier‚ D.‚ 2003. Encapsulation of acetylcholinesterase in preformed liposomes. BioTechniques 34‚ 1158–1162
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2 Lab Fetal Pig Dissection: Respiratory and Digestive Systems Organs Functions Salivary Glands -Three pairs of exocrine glands in the mouth that secrete saliva; the parotid‚ submandibular (sub maxillary)‚ and sublingual glands The parotid is the largest and most easily visible of all the salivary glands. The sunbmaxillary is bean shaped and located under the bigger parotid gland. The submandibular gland lies near the jaw line. Glottis -The opening between the vocal cords at the upper part
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2 MAJOR CLASSIFICATIONS OF THE DIGESTIVE SYSTEM A. FOOD TUBE/ALIMENTARY CANAL/DIGESTIVE TRACT -Mouth Cavity -Pharynx -Esophagus -Stomach -Small intestines -Large Intestines -Rectum -Anus B. ACCESSORY ORGANS/GLANDS -Salivary glands -Liver -Pancreas -Gall bladder -Appendix DIGESTIVE SYSTEM- responsible for the breaking down of food into simpler molecules. ABSORPTION- bringing food to the body cells DIGESTION-) the process of breaking down complicated chemicals in nutrients into forms
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of carbohydrate begins in the mouth‚ with the secretion of the enzyme salivary amylase from the serous cells of the salivary gland. This enzyme breaks starch and glycogen into disaccharides. The mucous cells of the salivary gland secrete a mucus‚ which causes the food to stick together‚ and acts as a lubricant to aid in swallowing. The salivary glands are grouped into three categories: the parotid gland‚ submandibular glands‚ and sublingual‚ all located near the mouth. The food (bolus) is forced
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teeth‚ tongue and salivary glands. Hoebler et al. (1998) stated that the food was break down into smaller pieces by using teeth‚ tongue and saliva. In the mouth‚ teeth act as a tool that mechanically reduced size of food into small pieces. However‚ the tongue manipulates food bolus by pushing it for swallowing (Hoebler et al.‚1998). The last part of the oral cavity is salivary glands. In the salivary glands‚ it secretes saliva. Furthermore‚ enzyme that contain in the saliva is salivary amylase (common
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(Armadillidium vulgare) to study animal behavior instead of fruit flies. They are members of a family of woodlice in the order Isopoda that are able to roll into a ball. When writing up this lab‚ substitute A. vulgare or “roly-poly” or “pillbug” for Drosophila melanogaster throughout. **You still have to know the basics of fruit fly behavior‚ so be sure to read the lab carefully and save the lab handout to study later for the AP Exam. ***The Pre-lab (due before we start the lab) includes PART I- PART IV.
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tongue‚ salivary glands‚ liver‚ gallbladder‚ and pancreas. To achieve the goal of providing energy and nutrients to the body‚ six major functions take place in the digestive system; Ingestion‚ secretion‚ mixing and movement‚ digestion‚ absorption‚ and excretion. The mouth is where food begins its journey through the digestive system in the mouth‚ also known as the oral cavity. Inside the mouth are many accessory organs that aid in the digestion of food‚ the tongue‚ teeth‚ and salivary glands. Teeth
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chemicals that speed up reactions involved in the breakdown of food. The stomach and the small intestines‚ which are parts of the alimentary canal‚ each produce a digestive juice. Other digestive juices empty into the alimentary canal from the salivary glands‚ gall bladder‚ and pancreas. These organs are also part of the digestive system. Part 1 | | Location of the parts that are in the Digestive System Part 2
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