Anatomy and Physiology
Anatomy and Physiology BIOH 113 - 01
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BIOH 112 - 01
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This 12 page Study Guide was uploaded by Meaghan Raw on Monday March 28, 2016. The Study Guide belongs to BIOH 113 - 01 at University of Montana taught by Heather Dawn Labbe (P) in Spring 2016. Since its upload, it has received 53 views. For similar materials see Human Form and Function II in Biological Sciences at University of Montana.
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Date Created: 03/28/16
a. Left bundle branch b. Sinoatrial node c. Bundle of His d. Atrioventricular node e. Purkinje fiber Which of the following organs is supplied by arteries that branch from the Inferior Mesenteric artery? a. Colon b. Stomach c. Spleen d. Kidney e. Brain If the BHP at the venous end of a capillary bed was increased over normal due to the “back‐up” of blood as a result of congestive heart failure, which of the following would be expected as a result? a. Reabsorption would be increased over normal at the venous end of the capillary bed. b. Fluid would “shift” into the interstitial space causing edema. c. The lymphatic capillaries would have less fluid to drain from the interstitial space. d. Both A and C e. None of the above Which of the following statements is INCORRECT regarding cardiac muscle tissue? a. Cardiac muscle cells have a large numbers of mitochondria which allow them to rely on aerobic metabolism in order to generate ATP. b. Cardiac muscle cells are interconnected via specialized cellular junctions called intercalated discs. c. Some cardiac muscle cells are “self excitable”, meaning they can generate an action potential without relying innervation by the nervous system. d. Cardiac muscle cells and skeletal muscle cells are structurally and functionally identical. e. Intercalated discs allow cardiac muscle cells to contract as a functional syncytium. The circulatory route that supplies the brain with blood is called the: a. The carotid portal system b. The circle of Willis c. The hypophyseal portal system d. The cephalad circuit e. Coronary circulation Which of the following statements is correct regarding the isovolumetric contraction phase of the cardiac cycle? a. The dichrotic wave is due to an increase in atrial pressure during atrial systole. b. Ventricular volume rapidly decreases. c. The mitral valve has just shut, and the aortic semi‐lunar valve has just opened. d. The pressure in the ventricle is at its highest value. e. Pressure in the aorta exceeds that of the left ventricle. A 34 year old male presents to the ED with the following vital signs and lab values: Heart Rate: 138 bpm Respiratory Rate: 24 breaths/min Blood Pressure: 152/98 mmHg Hematocrit of 47% Which terms best describe this individual based only on the above information? a. Anemic and bradycardic b. Hypotensive and tachycardic c. Hypertensive and polycythemic d. Leukopenic and tachycardic e. None of the above a. Tunica media b. Tunica intima c. Tunica adventitia d. Tunica externa e. Internal elastic lamina Which letter indicates the T wave on this rhythm strip? It is a beautiful sunny, summer day. Bob is driving down Brooks St. and texting you about your plan for a tubing trip later that day on the Blackfoot. Suddenly, Bob hits a curb in the median and his car becomes airborne, rolling over multiple times before ending up on its side near the mall. Bob was not wearing his seatbelt and was ejected from the vehicle. The last thing Bob sees as he begins to lose consciousness is a large pool of blood that he seems to be lying in on the asphalt. What would you expect Bob’s heart rate to be like if you arrived on scene at that moment and took his pulse? a. Normal b. Tachycardic c. Bradycardic Which of the following statements is CORRECT? a. A decrease in venous return would cause an increase in EDV. b. In a healthy heart, the left ventricular stroke volume is approximately twice the volume of the right ventricular stroke volume. c. Blood colloid osmotic pressure declines as blood flows through the capillary beds, resulting in net filtration. d. The vessels that branch off of the celiac trunk supply the stomach, spleen, pancreas, liver and part of the small intestine with oxygen rich blood. e. The lowest pressure vessels in the body are the small, delicate capillary beds that are made solely of endothelium. What type of epithelium lines this region? a. Simple squamous epithelium b. Pseudostratified ciliated columnar epithelium c. Simple cuboidal epithelium d. Stratified squamous epithelium e. Simple columnar epithelium Resting exhalation: a. occurs when intrapleural pressure = atmospheric pressure. b. is considered an active process. c. requires contraction of the abdominal muscles in a healthy individual. d. occurs when intrapulmonary pressure = ‐1mmHg or ‐2mmHg relative to atmospheric pressure. e. results from the relaxation of the diaphragm and the external intercostals. Which of the following muscles is NOT contracting during a deep, forceful inhalation followed by a passive exhalation? a. External intercostals b. Sternocleidomastoid c. Rectus abdominus d. Diaphragm e. Scalenes Which of the following statements is CORRECT regarding the interval indicated between the red lines on the ECG trace shown below? a. It indicates atrial repolarization. b. It indicates ventricular repolarization. c. It indicates atrial contraction. d. It indicates ventricular depolarization. e. It indicates the depolarization of the atria and rest of the intrinsic conduction pathway. Which of the following is INCORRECT? a. Valve B is the Mitral valve. b. When Valve B has just shut, the volume in the ventricle is referred to as the end diastolic volume (EDV). c. Valve A is the pulmonary semilunar valve. d. The ventricular ejection phase begins when valve A has just opened. e. The isovolumetric relaxation phase occurs when valve A has just shut and valve B has not yet opened. Identify the vessel indicated by the arrow on this image. a. Right brachiocephalic trunk b. Right subclavian artery c. Right common carotid artery d. Right jugular artery e. Right vertebral artery Which of the following statements is INCORRECT regarding the type of vessel shown in section below? a. This is an elastic artery. b. The brachial and radial arteries are examples of this type of artery. c. The aorta and its initial branches are examples of this type of artery. d. Arteries of this type are the largest diameter arteries in the body and are also called conducting arteries. e. This type of artery is found close to the heart. Your neighbor, Bob, has been stung by a bee while out gardening. As it turns out, he is allergic to bees and is experiencing a severe anaphylactic reaction. You see him out in his yard, apparently in distress. You call 911, and then rush over. He is lying on the ground, having difficulty breathing. You notice the bee stinger still lodged in his neck, and note that the surrounding tissue is becoming edematous (swollen) and flushed looking, with red, bumpy hives appearing all over his face, neck and upper body (urticaria). As his breathing becomes more and more labored, he tells you that he does not have his EpiPen® (a self injectable dose of epinephrine). The paramedics arrive on scene and begin to assess his vitals; you hear them say that he has a BP of 92/72 mmHg and a heart rate of 148 bpm. Bob has flushed skin, is hypotensive and tachycardic. Which of the following choices best explains these signs of anaphylaxis? a. Release of vasopressin (ADH) at the wound site causing a massive systemic vasodilation. b. Internal bleeding and systemic blood clot formation caused by exposure to the bee toxin. c. Vasodilation caused by flood of histamine and an effort to compensate for a decreased stroke volume by increasing heart rate in order to maintain cardiac output. d. Loss of blood from the wound caused by the bee’s stinger. e. Vasodilation caused by anxiety which triggers the sympathetic nervous system. What is the intraplumonary pressure at this point of a breath cycle? a. Equal to atmospheric pressure b. Approximately 1 to 2mmHg above atmospheric pressure c. Approximately 9 mmHg below atmospheric pressure d. Approximately 1 to 2mmHg below atmospheric pressure e. Approximately 4 mmHg below atmospheric pressure Identify the artery indicated by the arrow. a. Right coronary artery b. Left anterior interventricular artery c. Left circumflex artery d. Left coronary artery e. Right marginal artery Which of the following statements is INCORRECT regarding cardiac physiology? a. The intrinsic conduction system of the heart is an intricate web of nervous tissue that penetrates into the myocardium and, when stimulated, causes the contraction of cardiac muscle cells. b. The plateau phase of a ventricular contractile cell is maintained by K+ efflux and Ca2+ influx, a phenomenon which lengthens the absolute refractory period of the cell. c. The depolarization phase of a ‘pacemaker’ nodal cell is the result of the opening of voltage gated Ca2+ channels. d. The ‘pacemaker potential’ is reliant on the opening of sodium (Na+) channels in the cell plasma membrane which causes the membrane potential to rise towards the depolarization threshold. e. The depolarization phase of a contractile cardiac cell is the result of the opening of voltage gated Na+ channels. The _____________________________________ is the adult remnant of a fetal shunt that allows blood to flow from the pulmonary trunk to the aorta. a. Ductus venosus b. Fossa ovalis c. Ligamentum arteriosum d. Ductus arteriosus e. Ligamentum teres Which of the following is a CORRECT statement regarding the vascular system? a. Sinusoidal capillary beds are found in the liver, brain, lungs, and lymphatic tissues. b. Many veins, especially those in the limbs, have valves which aid in venous return by preventing the backflow of blood. c. The lumen of an artery, when contrasted with a comparably sized vein, is usually much larger. d. Arteries that are part of the pulmonary circuit carry oxygenated blood back to the heart. e. Only the largest veins, for example the superior vena cava, have a tunica media. Which of the following is classified as a respiratory zone structure? a. lobar bronchus b. alveolar duct c. terminal bronchiole d. trachea e. carina
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