Questions

Match the following pulmonary disorders with their correct physiological changes Chronic obstructive pulmonary disease Choose Respiratory distress syndrome Pulmonary edema Emphysema Previous page Choose Choose Choose Choose Small alveolar surface area k Decreased tissue elasticity and lung compliance Deficiency of surfactant in premature infants F O 4

Which of the following determines lung compliance O a Muscles of inspiration b Alveolar surface tension c Airway opening Od Flexibility of the thoracic cage

Nicotinic Receptors present in plasma membrane of Oa All of the above Ob Cardiac muscle cells Oc Smooth muscle cells Od Chromaffin cells

Which of the following causes hyperpolarizing graded potential None of the above O b Binding of glycine O c Binding of Acetylcholine O d Applied pressure

Which of the following chemicals does not help regulate blood pressure O a Carbonic acid O b Atrial natriuretic peptide O c Angiotensin II d ADH

Blood is slowest in the capillaries as results of Smallest total cross sectional area Ob Largest total cross sectional area Smallest blood vessels diameter C Od Largest blood vessels diameter

Vascular resistance depends on all of the following except O a Heart rate O b Oc Total blood vessel length O d Blood viscosity Size of the blood vessel lumen

Polycythemia decreases the viscosity of blood thus increasing blood pressure True O b False

After hypolarizing phase is due to a Extra outflow of Na ions b Extra influx of Na ions Extra influx of K ions Od Extra outflow of K ions

Milking refers to skeletal muscle contractions that drive venous blood toward O a Heart Ob Breasts O c Legs O d Lungs

O E 16 D In the figure shown the measure of angle BAC is 30 degrees Triangles ABC ACD ADE and AEF are similar The area of triangle AEF is how many times the area of triangle ABC 64 27 O A 27 8 112 2 3 3 3

Not yet answered Marked out of 1 00 The heart s natural pacemaker is termed the a Atrioventricular node b Bundle of His atrioventricular bundle c Purkinje fibers d Sinoatrial node

Capillaries are absent in all of the following tissues except O a Tendons O b Cartilage O c Eye lens Od Cornea

Blood cells can enter the bloodstream from bone marrow through a Sinusoids Ob Fenestrated capillaries Oc Clefts d Continuous capillaries

Match the following hormones with their correct physiological function s Aldosterone Anti diuretic hormone Choose Choose Atrial natriuretic peptide Choose Angiotensin II Epinephrine evious page Choose Choose Choose Vasodilation of arterioles in cardiac muscle and vasoconstriction of arteriole in abdominal or Promotes the loss of salt and water in the urine and reduces blood volume Potent vasoconstrictor that stimulates secretion of aldosterone Increases reabsorption of sodium ions and water by the kidneys Promotes movement of water from the lumen of kidney tubules into the bloodstream

30 Sarcomere ends between O a Two M bands Ob A band and I band Oc Two Z lines O d Two I bands

Bronchodilation because of sympathetic signal results in O a Increase in airway resistance O b Reduction of airway resistance Increase in airway compliance Oc O d Reduction of airway compliance

Located between the right atrium and right ventricle is the O a Aortic semilunar valve O b Bicuspid mitral atrioventricular valve O c Pulmonary semilunar valve Od Tricuspid atrioventricular valve

Depolarization phase of the nerve impulse at a synaptic end bulb opens O a Voltage gated Na channels O b Voltage gated Ca 2 channels Oc Voltage gated K channels Od Voltage gated Cl channels

Tidal volume is calculated by O a Functional residual capacity minus residual volume O b Inspiratory capacity minus the inspiratory reserve volume Oc Vital capacity minus expiratory reserve volumes Od Total lung capacity minus the reserve volume

Above normal partial pressure of carbon dioxide CO2 is a Apnea O b Eupnea O c Hypercapnia O d Hypoxia

Voltage gated Na ion channels are open at O a 55 O b 30 Oc Zero

Blood cells can enter the bloodstream from bone marrow through O a Clefts O b Fenestrated capillaries Oc Continuous capillaries d Sinusoids

Passive Transport a type of passive transport where molecules move from a region of high concentration to a region of low concentration the diffusion of water through a partially permeable membrane from a region of high concentration of water to a region of low concentration of water the concentration gradient with the assistance of a channel protein the passive transport of molecules or ions down Active Transport Active transport is the movement of molecules or ions from a region of concentration to a region of Transport of Large Particles space Active transport is powered by the molecule In order to move substances like ions against their transport proteins change their concentration that requires the expenditure of in response to ATP activation the process of cells secreting particles to the extracellular space the process of cells taking in substances from the extracellular the process of cells engulfing pathogens or debris the process of cells taking in fluids from the extracellular space

Which law discusses the statement The total pressure of a mixture of gases is the sum of the individual partial pressures of gases in that mixture O a Boyle s law O b Henry s law O C Charles law O d Dalton s law

The main integrating centers for most autonomic reflexes are located in O a Brain stem and pituitary O b Hypothalamus and brain stem O c Hypothalamus and spinal cord O d Brain stem and spinal cord

Highest blood vessels resistance can be detected in O a Arteries O b Vena cava c Veins d Arterioles OC

Milking refers to skeletal muscle contractions that drive venous blood toward the lege O a False O b True

Multinucleated and periphrelly located nuclei are O a Skeletal muscle O b Smooth muscle None of the answers is correct O d Cardiac muscle

Normal exhalation during quiet breathing is a n O a Simple process O b Facilitated process Oc Active process O d Passive process

Which of the following chemicals does not help regulate blood pressure O a Angiotensin II O b ADH O c Carbonic acid O d Atrial natriuretic peptide

Obese people often have hypertension because of O a All answers are correct O b Adipose tissue increases pressure on blood vessels Oc Additional blood vessels in adipose tissue O d Adipose tissue increases heart rate and cardiac output

The exchange of O2 and CO2 between systemic capillaries and tissue cells is called O a Internal respiration O b Pulmonary ventilation O c External respiration O d Cellular respiration

If systolic pressure was 150 mmHg and diastolic pressure was 90 mmHg mean arterial pressure will be equal to O a 110 mmHg O b 120 mmHg O c 100 mmHg O d 90 mmHg

Which of the following lung volumes is not measured by spirometry O a Residual volume O b Tidal volume Oc Expiratory reserve volume Od Inspiratory reserve volume

The main center for regulation of systemic vascular resistance is the vasomotor center in the brain stem O a True O b False

The period of time during which a second action potential can be initiated but only by a larger than normal stimulus is O a Relative refractory period O b Inhibitory postsynaptic period O c Absolute refractory period Od Excitatory postsynaptic period

High lung compliance means O b O a Lung is filled with blood and resist expansion Lungs and chest wall resist expansion O c Lungs and chest wall expand easily Od Lung is filled with fluid and expand easily

ADH has which of the following effects on the distal convoluted tubule Increase the urine volume 5 Increase water re absorption Decrease water re absorption O d Decrease the concentration of urine

Anticholinesterase is used to treat O a None of the answers is correct O b Muscle spasm O c Extend the effects of curare like drugs after surger Od Myasthenia gravis

Which of the following lung volumes is not measured by spirometry O a Inspiratory reserve volume O b Expiratory reserve volume Tidal volume O d Residual volume

On a normal ECG ventricular depolarization occurs during the O a S T segment O b QRS complex OC Twave Od P Q interval

In most neurons nerve impulses arise at the junction of a Cell body axon Dendritic tree axon terminal Ob c Axon hillock initial segment O d Cell body axon

Surfactants is a mixture of a Phosphoproteins glycoproteins b Phospholipids lipoprotein OC Cardiolipin mucopolysaccharides Od Cholesterol triglycerides

An solution is when the concentration of solutes is the same inside the cell compared to the surrounding solution Water molecules are in a dynamic meaning that there is equal movement of molecules in and out of the membrane A solution is when the concentration of solutes is higher inside the cell compared to the surrounding solution In this case H 0 will diffuse the cell A solution is when the concentration of solutes is lower inside the cell compared to the surrounding solution In this case H 0 will diffuse the cell H O H O In contrast a membrane pushes against the H O In plant cells loss of water from the vacuole causes cells to become happen in a solution solution would cause the cells to become Vacuole This would where the cell Passive Transport a type of passive transport where molecules move from a region of high concentration to a region of low concentration the diffusion of water through a partially permeable membrane from a region of high concentration of water to a region of low concentration of water the passive transport of molecules or ions down the concentration gradient with the assistance of a channel protein Active Transport Active transport is the movement of molecules or ions from a region of concentration to a region of Active transport is powered by the molecule In order to move substances like ions against their transport proteins change their Transport of Large Particles concentration that requires the expenditure of space in response to ATP activation the process of cells secreting particles to the extracellular space the process of cells taking in substances from the extracellular the process of cells engulfing pathogens or debris the process of cells taking in fluids from the extracellular space

9 Ava is a computer technician One day she drove 173 mi away from Pasadena for a service call The next day she drove 75 10 then from Pasadena Ava was miles away from Pasadena Simplify your answer Type a mixed numeral if possible Otherwise type a whole number or a fraction mi back toward Pasadena for another service call How far was she

In triangle PQT Ris on side PT such that QR QP Also QS is an altitude and QT10 The values of tan RQT tan ZSQT and tan ZPQT form a geometric progression and the values of cot ZSQT cot ZRQT and cot SQR form an arithmetic progression Find the area of triangle PQR P S R

410 210 I

Tiana would like to buy cone shaped hats for her birthday party She wants hats with the largest volume since they look bigger Which of the following brands of hat should she buy Brand A height of cone 15 in radius of cone base 6 in Brand B height of cone 18 in radius of cone base 5 in A Brand A OB Brand B O C Either the hats have equal volumes

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