Histology Review Supplement The slides in this section are designed to provide a basic histology review related to topics introduced in the PhysioEx lab simulations and in your anatomy and physiology textbook. From the PhysioEx main menu‚ select Histology Tutorial. The opening screen should appear after a few seconds. The Sort by menu is located at the top left. Click on the white drop-down menu and select “Histology Review” from the list. You will note that the slides in the histology module are
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Essays |Biology: |Chapter 12 Transport of substances in humans | |Combined Science: |Chapter 10 Transport of substances in humans | |!|EEB021210001O|!| * Write an essay on the following topic. Compare arteries‚ veins and capillaries in terms of their features and functions. (12 marks) ## Content (maximum 9 marks) |Contents |Differences
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called the cystic fibrosis transmembrane conductance regulator (CFTR). In ductal epithelial cells‚ CFTR is highly expressed and functions to transport fluid and anions into the lumen. Dysfunction of the CFTR gene leads to a decrease in luminal fluid volume and decreased pH‚ resulting in protein precipitation within the ductal lumen and loss of normal acinar cell function. Estimated gene frequency of cystic fibrosis varies in different ethnic groups with highest incidence in Caucasians (1 in 2‚500). Approximate
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ions to open‚ resulting in an influx of chloride ions into the lumen. The movement of ions raises the water potential and lowers the water potential in the lumen. Water is then drawn out of the cells via osmosis. Therefore creating a concentration gradient due the loss of ions from the intestinal epithelium‚ thus ions from the surrounding tissues and blood diffuse into the cells. Water then flows out of these tissues and into the lumen‚ resulting in severe dehydration and diarrhoea which form the
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berries held to represent the Crown of Thorns worn by Jesus at the crucifixion and the blood he shed.[118][119] Music and carols The earliest extant specifically Christmas hymns appear in 4th-century Rome. Latin hymns such as "Veni redemptor gentium"‚ written by Ambrose‚ Archbishop of Milan‚ were austere statements of the theological doctrine of the Incarnation in opposition to Arianism. "Corde natus ex Parentis" ("Of the Father’s love begotten") by the Spanish poet Prudentius (d. 413) is still
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Arteries Have a thick wall Have a small lumen Carry blood AWAY from the heart Don’t have any valves Veins Have a thin wall Have a large lumen Carry blood TO the heart Have valves Capillaries lets the exchange of gas to take place it’s one cell thick The Blood The blood is made up of 4 parts‚ the white blood cells‚ red blood cells‚ plasma
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Coronary heart disease Heart disease is leading cause of the death in the United States for both men and woman. (NIH‚ 2016) In 2014 614‚348 deaths were reported to be caused by heart disease. (Centers for Disease Control and Prevention‚ 2015) Approximately 14 million people experience coronary artery disease and it is responsible for 20 percent of all US deaths. (F Brian Boudi‚ 2016) Statistics shows that men are more likely to experience CAD than women. (F Brian Boudi‚ 2016) The center for Disease
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1.2 – types of blood vessels and structure There are three types of blood vessel‚ Arteries ‚ veins and capillaries. Each of them have different functions involved in carrying blood around the body . Arteries are blood vessels that transport blood away from the heart‚ veins are blood vessels that transport blood to the heart and Capillaries are extremely small vessels located within the tissues of the body that transport blood from the arteries to the veins. they must be constructed for carrying
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small intestine. This binding causes some of the protein channels to stay open and therefore chloride ions can then move from the epithelial cell into the lumen of the small intestine via diffusion. This then means that the water potential in the epithelial cells in higher than that of the lumen and so water moves from these cells and into the lumen via osmosis. Water is lost because of this and this in itself causes dehydration and diarrhoea which are the symptoms of Cholera. Another disease which
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as a pseudo aneurysm‚ is when there is a breach in the vessel wall such that blood leaks through the wall but seen in the adventitia or surrounding perivascular soft tissue. A direct communication of blood flow exists between the vessel lumen and the aneurysm lumen through the hole in the vessel wall. The risk ofrupture is higher than that of a true aneurysm of comparable size due to poor support of the aneurysm wall and thus false aneurysms generally require treatment (Pitton MB et
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