BIO 269

BIO 269 QUESTIONS AND ANSWERS LATEST UPDATE 100% CORRECT A+ GRADED. Buy Quality Materials! How do preceding inhalation and exhalation affect one's ability to hold one's breath? Why? Inhalation: more oxygen after inhalation; breath can be held the longest after this breath due to a new amount of fresh oxygen filling the lungs Exhalation: exhale majority of oxygen in body, left with a mixture of oxygen and CO2; cannot hold breath for long after pushing CO2 out and takes longer for O2 t...

BIO 269 QUESTIONS AND ANSWERS LATEST UPDATE 100% CORRECT A+ GRADED. Buy Quality Materials! What is the order of the digestive tract from start to finish? mouth salivary glands (sublingual/parotid/submandibular) pharynx esophagus stomach small intestine (duodenum, gallbladder, jejunum) pancreas large intestine (cecum, ascending colon, transverse colon, descending colon, sigmoid colon) rectum anus It takes ____ seconds for food to travel from the mouth to the stomach. 45 What org...

BIO 269 QUESTIONS AND ANSWERS LATEST UPDATE 100% CORRECT A+ GRADED. Buy Quality Materials! What is secretion? release of water, acid, buffers, and enzymes into lumen of GI tract Gastric (stomach) secretions pH = 1.0-3.5 (very acidic) Total volume of secretions (on average) in the human body (daily) = 6.7 or about 7 liters What are the three major saliva glands? Parotoid, submandibular, sublingual Secretions primarily are controlled by ... the parasympathetic influence Secretions ar...

BIO 269 QUESTIONS AND ANSWERS LATEST UPDATE 100% CORRECT A+ GRADED. Buy Quality Materials! What is Starling's Law? The greater the filling of the heart, the greater the amount pumped by the heart Where does the greatest drop in blood pressure occur? The arterioles because blood needs to slow down before entering the capillaries Where does most vasoconstriction and vasodilation occur? In the arterioles What are the names of the heart's chambers? Atria and ventricles Which cham...

BIO 269 QUESTIONS AND ANSWERS LATEST UPDATE 100% CORRECT A+ GRADED. Buy Quality Materials! Villi and Microvilli increase surface area for absorption in small intestine Pancreatic juice Alkaline mixture secreted by pancreas to neutralize chyme entering small intestine from stomach gastric inhibitory peptide hormone that slows gastric motility and stimulates insulin release from the pancreas Secretin Digestive hormone that stimulates the pancreas to release pancreatic juice (bicarbona...

BIO 269 QUESTIONS AND ANSWERS LATEST UPDATE 100% CORRECT A+ GRADED. Buy Quality Materials! You are on a two day hiking trip to the mountains. You pack adequate provisions including plenty of water because you know that no water is available on the trail. About 4 hours into the hike you fall on loose rock and your backpack falls, breaking the water bottles which soaks the ground. You decide to go back due to the lack of water. Explain what will happen to your urine concentration and why? Me...

BIO 269 QUESTIONS AND ANSWERS LATEST UPDATE 100% CORRECT A+ GRADED. Buy Quality Materials! What anatomy makes up the alimentary tract? Mouth, parotid gland, sublingual gland, submandibular gland, pharynx, esophagus, liver, stomach, pancreas, duodenum, jejunum, ileum, gall bladder, transverse colon, ascending colon, descending colon, sigmoid colon, cecum, appendix, rectum, anus What is the microanatomy of the small intestine? Mucosa (sublayers: epithelium, lamina propria, muscularis mucosa...

BIO 269 QUESTIONS AND ANSWERS LATEST UPDATE 100% CORRECT A+ GRADED. Buy Quality Materials! You are on a two day hiking trip to the mountains. You pack adequate provisions including plenty of water because you know that no water is available on the trail. About 4 hours into the hike you fall on loose rock and your backpack falls, breaking the water bottles which soaks the ground. You decide to go back due to the lack of water. Explain what will happen to your urine concentration and why? Ment...

BIO 269 QUESTIONS AND ANSWERS LATEST UPDATE 100% CORRECT A+ GRADED. Buy Quality Materials! Aldosterone "salt-retaining hormone" which promotes the retention of Na+ by the kidneys. na+ retention promotes water retention, which regulates BP and heart rate. Released at the adrenal cortex. Lack of Na leads to a humoral release to increase blood volume and pressure. Feedback mechanism is the increase in blood volume and pressure/Na levels back to normal parathyroid hormone A hormone rele...

BIO 269 QUESTIONS AND ANSWERS LATEST UPDATE 100% CORRECT A+ GRADED. Buy Quality Materials! How many circuits are there in the heart? three 1. pulmonary circuit 2. systemic circuit 3. coronary circuit What does the pulmonary circuit do? brings blood to and from the lungs What does the systemic circuit do? brings blood to the tissues What does the coronary circuit do? supplies blood to the heart + heart muscle in the myocardium What is the smallest circuit in the body? coronary c...