Unit Exam 2 Results: Key Concepts in Cardiac Function

Wé: Unit Exam 2 - Results X Attempt 1 of 1 Written Aug 13, 2023 4:24 PM - Aug 13, 2023 5:02 PM Released Aug 19, 2023 12:55 AM Attempt Score 96 / 100 - 96 % Overall Grade (Highest Attempt) 96 / 100 - 96 % Question 1 2 / 2 points _is a condition where the heart is beating over 100 beats per minute. ~ ) Nodal Block _ ) Arrhythmia ) Tachycardia ) Bradycardia ) Irregular Heart Beat (IHR) w Hide question 1 feedback Good work; your answer is correct! Question 2 2 / 2 points

Which of the following does not play a role in blood pressure? ) Blood volume . ) Blood vessel diameter ) Cardiac output ) Peripheral resistance ) All of the above play a role in blood pressure. w Hide question 2 feedback Good work; your answer is correct! Question 3 2 / 2 points Cardiac output equals: ¢ ) Blood flow through the entire vascular system ) Blood leaving one ventricle during one beat of the heart. ) Systolic pressure plus diastolic pressure ) Stroke volume } ) Heart rate w Hide question 3 feedback Good work; your answer is correct! Question 4 2 / 2 points The pulmonary arteries carry blood to the

~ ) Lungs ~ ) Ventricles ~ ) Heart ) Systemic system ~ )Aorta w Hide question 4 feedback Good work; your answer is correct! Question 5 2 / 2 points Capillaries that have a perforated lining are called ) Sinusoid capillaries ) Fenestrated capillaries ) Continuous capillaries ) Gap Capillaries ) Perforated capillaries W Hide question 5 feedback Good work; your answer is correct! Question 6 2 / 2 points During vigorous exercise, one would expect:

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) Blood to be diverted from the brain ) Blood to be diverted to the kidneys ) Blood to be diverted to the muscles doing the work ) The heart rate to become slow but more contractile. ‘) Two of the above are correct. w Hide question 6 feedback Good work; your answer is correct! Question 7 2 / 2 points The following is a list of vessels. Place them in the order that blood would go through entering the systemic circulation. 1. Left ventricle 2. Aorta 3. Vena cavae 4. Pulmonary trunk 5. Pulmonary veins 6. Right atrium 7. Right ventricle 8. Left atrium ) 8,1,3,6,7,5, 2,4, )3,6,7,4,5,8,1,2 £ )3,5,8,4,1,2,7,6 > 67 77 39 5’ 27 1’ 4’ 8 1,7,3,8,5,6,2,4 w Hide question 7 feedback Good work; your answer is correct! Question 8 2 / 2 points Venous return is affected by all EXCEPT:

") Skeletal and muscle activity ) Values lining the veins ) Thorax pressure changes ) Temperature changes in the body ) All of the above affect venous return. w Hide question 8 feedback Good work; your answer is correct! Question 9 2 / 2 points Which tunic of an artery is responsible for maintaining blood pressure? ) Tunic intima ) Tunica media ) Tunica externa ) Tunica interna _ ) None of the above. w Hide question 9 feedback Good work; your answer is correct! Question 10 2 / 2 points These control the blood flow through a capillary bed.

) Arterioles 1»’) Precapillary sphincters ) Thoroughfare channel _ ) AV values ‘) Vasorum w Hide question 10 feedback Good work; your answer is correct! Question 11 2 / 2 points Capillaries that are lined with phagocytes are called ) Sinusoid capillaries ) Arterioles ) Continuous capillaries ~ ) Venules ) Fenestrated capillaries w Hide question 11 feedback Good work; your answer is correct! Question 12 2 / 2 points Systolic pressure minus diastolic pressure is another term for:

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) peripheral resistance ) Stroke volume ) Cardiac output ) Mean arterial pressure (MAP) ) Pulse pressure w Hide question 12 feedback Good work; your answer is correct! Question 13 2 / 2 points What is the sequence of layers of the blood vessels (veins or arteries) from outside to the inside? ) Tunica intima, tunica media, tunica externa ‘) Tunica media, tunica externa, tunica intima ) Tunica intima, tunica media, tunica externa ) Tunica externa, tunica intima, tunica media ~ ) Tunica externa, tunica media, tunica intima W Hide question 13 feedback Good work; your answer is correct! Question 14 2 / 2 points The exchange of substances between the blood vessels and the surrounding tissues can only happen in the

) Capillaries _ ) Veins ") Arterioles ") Venules ) Arteries w Hide question 14 feedback Good work; your answer is correct! Question 15 2 / 2 points The amount of blood pumped by either ventricle in one minute is called. () Stroke volume > Cardiac output ) Systolic volume ) Starling output ) End systolic volume W Hide question 15 feedback Good work; your answer is correct! Question 16 2 / 2 points If a person is given antibodies after a rattlesnake bite, this is considered:

) Active natural immunity ) Active artificial immunity ) Passive natural immunity ) Passive artificial immunity > None of the above w Hide question 16 feedback Good work; your answer is correct! Question 17 2 / 2 points The cells responsible for humoral immunity are the ) Natural killer cells ) platelets ) Helper T cells ) erythrocytes _ ) Becells w Hide question 17 feedback Good work; your answer is correct! Question 18 2 / 2 points Fever:

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) Slows the body's metabolic rate to conserve energy ) Is always considered dangerous ) Influences the liver to release large amounts of iron into the system () Is the resetting of the body's temperature by chemicals. ‘) Two of the above are correct. w Hide question 18 feedback Good work; your answer is correct! Question 19 2 / 2 points Antibodies: ) Require haptens to function ) Make up part of the primary immune system ) Are made from T cells ‘) Are made from plasma cells _ ) None of the above w Hide question 19 feedback Good work; your answer is correct! Question 20 2 / 2 points Part of the second line of defense includes:

~ ) Cilia ) Antibodies ) Sebum on the skin ) Phagocytes ) Platlets w Hide question 20 feedback Good work; your answer is correct! Question 21 2 / 2 points Which Immunoglobulin class is found attached to the surface of B cells? ~ ) IgE - ) IgM C ) IgA - ) 1gb C ) d.1gG w Hide question 21 feedback Good work; your answer is correct! Question 22 2 / 2 points Macrophages are derived from

;;_’ ) lymphocytes ) eosinophils ") neutrophils ) basophils ) monocytes w Hide question 22 feedback Good work; your answer is correct! Question 23 2 / 2 points Looking inside the deep cortical region of a lymph node, mostly cells will be found. ) eosinophils ~ ) Natural Killer Cells ~ ) Bcells ) A mixture of many cells i}TCdb w Hide question 23 feedback Good work; your answer is correct! Question 24 2 / 2 points The largest collection of lymphoid tissue in an adult is in the

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) tonsils ~ ) spleen ) Liver ) peyers patches ) thymus w Hide question 24 feedback Good work; your answer is correct! Question 25 2 / 2 points The majority of the lymph returns to the blood system by way of the ) Cisterna chili ~ ) Aorta ) Both the superior and inferior vena cava ) Thoracic duct ) Right lymphatic duct w Hide question 25 feedback Good work; your answer is correct! Question 26 2 / 2 points The white pulp area in the spleen contains large amounts of

" ) Red blood cells ) Foam cells ~ ) Lymph ) Platlets ~ ) Lymphocytes w Hide question 26 feedback Good work; your answer is correct! Question 27 2 / 2 points Cancer cells and virus cells can be killed by _ ) Tlymphocytes ) Natural Killer Cells () Phagocytes _ ) Antibodies ) Eosinophils w Hide question 27 feedback Good work; your answer is correct! Question 28 2 / 2 points The body's nonspecific defense includes everything except:

~ ) Antibodies _ ) Inflammation ) Interferons ) Compliment system ) All of the above are nonspecific defenses. w Hide question 28 feedback Good work; your answer is correct! Question 29 2 / 2 points The only antibodies that can cross the placenta are the C ) algA ~ ) 18G ~ ) IgE ~ ) 1gD 1M W Hide question 29 feedback Good work; your answer is correct! Question 30 2 / 2 points The inflammmatory response does not:

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B ) Replaces damaged tissue with healthy tissue ) Prevents the spread of disease to surrounding tissues ) Starts the repair process of the tissue ) Disposes of the cellular debris () The inflammatory response does all of the above. w Hide question 30 feedback Good work; your answer is correct! Question 31 4 / 4 points The blood traveling to the lungs is generally described to be which of the following? () Oxygenated > Deoxygenated ) Neither oxygenated or deoxygenated ) Both oxygenated and deoxygenated ) None of the terms above would ever be used to describe blood in the ~ body w Hide question 31 feedback Good work; your answer is correct! Question 32 4 / 4 points The exchange of gases in internal and external respiration occurs due to

) Simple diffusion () Facilitated diffusion ~ ) Osmosis ) Active transport > None of the above w Hide question 32 feedback Good work; your answer is correct! Question 33 0 / 4 points percent of CO2 is transported to the lungs bound by hemoglobin. - )20 )30 ~)70 - 10 w Hide question 33 feedback Hemoglobin carries (binds) 20% of CO2 transported to the lungs. A much larger 70% of CO2 is carried to the lungs as bicarbonate (HCO3-) and a smaller 7-10% is dissolved CO2 in the plasma. Question 34 4 / 4 points Which of the following are some of the functions of the respiratory system?

) Helps to maintain acid-base balance ) Provides oxygen to body tissues and removes waste such as CO2 _ ) Helps in sensing odors ) Helps in the production of speech ) All of the above w Hide question 34 feedback Good work; your answer is correct! Question 35 4 / 4 points Under normal circumstances, bronchoconstriction is caused by and bronchodilation is caused by ) Sympathetic nervous system; parasympathetic nervous system ) Parasympathetic nervous system; sympathetic nervous system ) Voluntary control; involuntary control ) Involuntary control; voluntary control . ) None of the above w Hide question 35 feedback Good work; your answer is correct! Question 36 4 / 4 points The oropharynx is a passageway for which of the following?

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) Air only ) Food only ) Both air and food ) Neither air nor food > None of the above w Hide question 36 feedback Good work; your answer is correct! Question 37 4 / 4 points How many molecules of oxygen can one molecule of hemoglobin carry? s )3 L2 ) 4 1 w Hide question 37 feedback Good work; your answer is correct! Question 38 4 / 4 points What would happen if the body allowed us to exhale all of the air out of our lungs?

) Nothing, we could easily fill them up when we inhaled again ~ ) The alveoli would collapse ) The trachea would collapse ) All of the above > None of the above w Hide question 38 feedback Good work; your answer is correct! Question 39 4 / 4 points Which of the following are ways COZ2 is transported in the blood? ) As bicarbonate (HCO3-) > As dissolved CO2 in plasma ) As carbaminohemoglobin ) All of the above _ ) None of the above w Hide question 39 feedback Good work; your answer is correct! Question 40 4 / 4 points Which cell is responsible for picking up oxygen to transport to tissues throughout the body?

() Monocytes ) Leukocytes ) Erythrocytes ) Kupffer cells ) Platlets w Hide question 40 feedback Good work; your answer is correct! Done

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BIOL251 Exam 2

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