Fall_06-_3

Fall_06-_3 - run-I'l- \. "\ Ex 3 - 13101. 1108 - am...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: run-I'l- \. "\ Ex 3 - 13101. 1108 - am F0" ’ O G x. - \ Name PLEASE FILL IN YOUR TEST FORM: 3 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) w Why is the velocity of blood flow the lowest in capillaries? 1) A) The systemic capillaries are supplied by the left ventricle, which has a lower cardiac output than the right ventricle. B) Capillaries are far from the heert. and blood flow slows as distance trom the heart increases. C) The diastolic blood pressure is too low to deliver blood to the capillaries at a high flow rate. . fil‘he total cross sectional area of the capillaries is larger than the total area of the arteries. E) Capillaries are the smallest vessels in the circulatory system. 2) Which one of the following structures is found in birds and mammals but not in other 2) vertebrates? A) cortical nephrons f’ (E) juxtamedullary nephrons ' C) urethra D) ureter ’E) collecting duct ['13) 'The transfer of fluid from the glomerulus to Bowman's capsule 3) ' .2015 very selective as to which small molecules are transferred. ,B‘)“fesults from active tranSport. C) depends on sufficient blood pressure to force-filter the fluid. ,9) usually includes the transfer of red blood cells to the nephron tubule. .rf" 'E),is due to diffusion. 4) The blood vessel leaving the lung is called 4) .26 pulmonary artery ' (BTEaIdiac vein C) vena cava Plaorta ,E)"pulmonary vein 5) rDuring a workout, your muscles are working at a rate that causes a P02 of 20mm Hg in your 5) tissues. Use Figure 1 (end of question section) to determine how much 02 is released into your muscles. ' __ - A) 70% @BO% C) 10% D) 50% E) 100% 6) Humans can produce urine that is 6) A) hypoosmofic to blood (fili‘soosmofic or hyperosmotic to blood ’C) isoosmotic to blood D) isoosmotic. hyperosmotic or hypoosmotic to blood E) hyperosmotic to blood 7) w A toxin that specifically blocks active transport in the loop of Henle will result in which of the 7) following? A) a decrease in urine concentration B) an increase in the interstitial concentration of NaCl ,6) an increase in filtration rate D) an increase in urine osmolarity /E)'a reduction of water loss 8) How many chambers are in a fish heart? 3) fl one atrium; two ventricles B) one atrium; one ventricle C) none of the above p)"two atria; one ventricle )3) two atria; two ventricles ’ w Weight Lifting exercise leads to all of the following EXCEPT 9) A) bigger muscles B) more sarcomers c: more myofibrils ,2)“ more strength I f 10) In which region of the (see Figure 2 at end of question section) is urine concentrated? 10) A)m,1v,v (jay/11 011 D)! E)V1 r: 11) Which is the correct sequence of-blood flow through your heart? 11) I ’/A) vena cava-right atrium-right ventricle-left atrium-left ventricle-aorta g. n ,B‘) vena cava-left atrium-left ventricle-right atrium-right ventricle-aorta ri’ .2 'vena cava-right ventricle-right atrium-left atrium-left ventricle-aorta ‘\ ) cava-left atrium-left ventricle-right ventricle-right atrium-sarta Hvena cava-right atrium-left atrium-right ventricle—left ventricle-aorta 62): Mammalian gas exchange depends on all of the foHOWing EXCEPT 12) 7" ' ,Ma large surface area ,B')’ diaphragm contraction .2)P02 gradients gative pressure E) counter-current between perfusion and ventilation 13) Please rate how useful you expect this class (what you learn about biology and your body) to 13) be for you in the future (please note you will receive credit for any answer): mewhat usefiil C) I have no idea D) waste of my time E) not very useful The atmospheric pressure on Mt. Whitney, the highest mountain in the continental US, is about 400mm Hg. What is the P02? A) about 160mm Hg _ B) about 100mm Hg 2 f 2/. 1,55 C) about 40mm Hg 5 (50;; D) about 210111111113 . 2 [ (400 “£390 @about 80mm Hg 14) £f(10»»y 2.! alblocks all sodium mOVement into the neuron Q/changes the i of the neuron E) prevents neurouansnfitters from entering the cell 16) pathetic nervous system finmased heart rate .. fiwueased bloodflow in peripher "lB’eirei-dse p of Henle actually do? ’ A) it excretes ADH B) it concentrates urine ('3) it regulates ion concmtrafions D) it reabsorbs glucose it sets up a Concentration gradient 17) 3) r Man'ne fish produce mime that is (at it’s maidum concentration) 18) A) isoosmotic to environment ( isoosmotic to blood C) hyperosmotic to blood D) hyperosmolic to environment E) hypoosmotic to blood ) The energy from ATP is used for during muscle contraction. A) to relax the muscle B) to bind myosin to acfin @to detach myosin from actin . . .. _ :l I, ;. 19) E) to release calcium The have the lowest blood pressure A) arterioles B) veins C) venules w Which of the following is the correct sequence that occurs during the excitation and ' 21) ' contraction of a muscle cell? 1. Tropomyosin shifts and unblocks the myosin binding sites. ' 2. Calcium is released and binds to'the troponin complex. 3. Transverse tubules help to depolarize the sarcoplasmic reticulum 4. The actin filaments are ratcheted across the thick filaments by the heads of the myosin molecules using energy from ATP. I \ 5. An action potential in a motor neuron causes the axon to release acetylchofine, which depolarizes the muscle cell membrane. 2021,3534 (gamete c)5.3,1,2,4 /Bi1,2,3.4,5 ,Ei'i;'3,4,1,5 ‘ Action potentials are usually propagated in only one direction along an axon, because 22) Mm canflow along the axon in only one direction Eithere is no ion gradient behind the axon potential D) the axon hillock a higher membrane potential than the axon terminal E) the nodes of Ranvier conduct in only one direction 1Hr' -- -. aldlll “ 1 How do APs spread across the heart? Choose the correct sequence. 23) ,M’atria-AV node-His Bundels— Purkinje fibers— ventricles-SA node ,3“) SA node-AV node—atria—Purkinje fibers—ventricles-l-Iis bundles fifth-SA node— AV node-ventricles—His bundels~ Purkinje fibers ' (fl-LEA node- atria- AV node— His bundles— Purkinje fibers—ventricles ’ E) AV node- atria— SA node- His bimdles— Pukinje fibers— ventricles 24) What is the effect of ADH on your kidney? 24) @it increases blood osmolarity it increases water loss C) it makes the collecting duct more permeable to water ID‘)’ it makes urine hypoosmotic " Kit is a diuretic 25) *Why is the respiratory system of a bird more efficient than the human respiratory system? 25) Mirds inhale and exhale much faster. @I'he bird respiratory system does not mix oxygen-poor air with oxygen—rich air. ,2)’ The human respiratory system ends in small alveoli, which reduce the amount of surface area available for gas exchange. ,1?) Birds increase their gas exchange surface by adding air sacs. aBT'Birds usually fly higher up where oxygen availability is higher . 26) What is the main cause that moves the blood in your leg veins towards your heart? 26) A) suction from heart B) blood pressure from heart C) gravity @ontraction of skeletal muscles E) contraction of vein walls fi 27) u A decrease in the pH of human blood during exercise would A) decrease C02 binding to hemoglobin. /B’) decrease cardiac output. Medease the amount of 02 unloaded from hemoglobin. [a M— ,B) increase diaphragm contractions. 0k ,2) decrease heart rate. 28) I What would account for increased urine production as a result of drinking alcoholic 28) beverages? A) increased reabsorption of water in the proximal tubule @ecreased amount of antidiuretic hormone (ADH) C) increased blood pressure D) the osmoregulator cells of the brain increasing their activity E) increased aldosterone production I) A sustained muscle contraction due to a lack of relaxation between successive stimuli is called 29) A) tonus. B) fatigue. C) cramp. E) spasm diac Muscle 30) A) has no refractory period . I ’3')” needs input from the nervous system to contract C responds to sensory signals from the brain pump Witt-iqu nervous input is slowed down by sympathetic neurons :1) a» When you go hiking in the Rocky Mountains a right-shift of the oxygen-hemoglobin binding 31) ”3 curveisproduced. Thisrightshiftcanbeduetoa 02k) lower blood temperature. /3) lower blood pH C) lower blood P02 @lower 2-3 DPG levels E) lower blood C02 . The depolarization of the presynaptic membrane of a motomeuron directly causes 32) A) synaptic Vesicles to fuse with the membrane B) the opening of chemically gated channels Rage-gated calcium clmmels in the 11mm to open D) an EPSP in the postsynaptic cell E) an action potential in the post—synaptic cell “(J 33) c When you suffer from pulmonary edema. fluid builds up in your alveoli (Figure 1). Which 33) 5" ‘ variable in Fick‘s law is affected here? 1 A) L B) c2 C) D D) c1 E) A . Action potential traveling along the ax0n is directly due to ' ' 34) Q) positive feedback _ C) permanently open channels D) refractory period E) myelin sheets "1'3 15- “r. g.- r " ' 5) w Breathing is usnally regulated by 35) (A) the hypothalamus. B) C02 concentration and pH-levels. ,2) erythmpoetin levels in the blood. Memo globin levels in the blood. E) the lungs. 36) A) C02 dissolved in blood plasma ,3)” carbonic anhydrase in red blood cells C) C02 bound to hemoglobin D) bicarbonate ion in blood plasma _:_‘_ETcarbonic acid in red blood cells er During muscle contraction all of the following applies EXCEPT A) ATP is neceSSary for contraction B) calcium is bound to treponin C myosin and actin filaments increase their overlap ' E) sarcomers shorten m «r Parkinson's disease is caused by low levels of the neurotranmitter dopamin in specific 38) regions. Which of the following is the most promising treatment of the symptoms with the least amount of side effects? 2;) increase calcium levels in extracellular fluid ,B'Tbloclc dopamin receptors on postsynaptic membranes :1 up reuptalce of dopamin components into presynaptic terminal (fies _ E) speed up dopamin esterase 39) You are going for a run on the beach. What is the P02 in your alveoli? 39) A)200mmI-Ig , 0 Bl‘lOOmmHg 210605 7431 C)80mmI-Ig - 7&0 60mm l-lg . r l E) 760mm Hg «"9 Arum: s ‘7’!) r; 4L6 40) Which of the following is true of urea? It is ,firT the primary nitrogenous waste product of most birds. VJ t”:— Milk ,3)‘ more toxic to human cells than ammonia. ,2; the primary nitrogenous waste product of most fish. (Lg/the primary nitrogenous waste product of marrunals. E) insoluble in water. "41),.9What does it mean if your blood pressure is 90! 60? 41) A) the pulse rate is 60 beats per minute B) the systolic pressure is 90mm Hg C) the blood pressure during contraction of the ventricle is 60 mm Hg D) the diastolic pressure is 90mm Hg E) the blood pressure during filling of your ventricle is 90 mm Hg -6 36) The main transport form of C02 in blood is i i What would be your effector organ in the homeostatic regulation of gas exchange by ' perfusion? Jr) heart . ' a'c -. . -.-. - opening 0 ask channels on postsynap u c mem rane C) opening of potassium channels on postsynaptic memrane "if Q) opening of potassium chi-trials on presynaptic E) closing of calcium channels on presynaptic membrane 44) Why are fish gills so efficient for gas exchange in water? 440' large blood flow velocity in lamellae B) active transprt of oxygen into gill capillaries 9)__negafive pressure breathing forces water across gills .r’Dj/counter-current arrangement of water and blood flow E) a oxygen saturation in water .Vhich part of your nervous system (N 5) controls your skeletal muscles? Be as specific as possible. \Blsympathetic NS he: gafferent NS Wefic NS ,E’)’ autonomic NS . Which of the following is NOT necessary to STOP muscle contraction? A) ACI-I-esterase is active B) Ca-pump removes Calcium from muscle cells ,Q’APs in motor neuron are terminated proteins are broken down «ETCa-pump removes Calcium from presynaptic terminal fl Amino acids are removed from filtrate by [$1 :reabsorption ‘. F I ' . " Q—secrefion. Cl?) filtration El . . ,_ 48) v: Fick's law implies all of the following EXCEPT ,k) diffusion is faster when the gradient is large ‘ Birdiffusion is faster when the diffusion distance is small C) diffusion is faster with ventilation diffusion is faster when the exchange area is large fiifiusion is faster when Cl is small 43) 45) 46) 47) 49) Why does the heart have its own blood vessel network, instead of taking oxygen and nutrients directly out of the blood it pumps? ' A) it does both B) the heart would take more than its fair share of the circulating nutrients C thebloodpressureistool‘lighmtheheart D change can only take place in capillaries E) you need arterioles to exdtange nutrients and oxygen 50) oApatierfihasabloodpresmueoleO/Emptflserateofwbeats/miryastrokevolume of70 mL/beat, and a respiratory rate of25breaths/min. This person's cardiac output per minute willbe A) 500 In]... B) LWO In]... C) 1,750 Ed... D) 2,800 1111.. E) 4,800 mL. 51) In which region ofthe kidney (see Figure 2 at end of question section) dOes most of the reabsorpfion occur? A) I B) H C) W D) N E) VII 49) 50) 51) ...
View Full Document

This document was uploaded on 09/21/2011.

Page1 / 8

Fall_06-_3 - run-I'l- \. "\ Ex 3 - 13101. 1108 - am...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online