Anatomy and Physiology Questions

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

Blood returning to the heart from the inferior vena cava would enter the O a Right atrium Ob Left atrium Oc Left ventricle Od Right ventricle

Branching is found in O a Cardiac muscle O b Skeletal muscle O c None of the answers is correct Od Smooth muscle

Vital capacity is sum of O a Inspiratory reserve volume tidal volume and expiratory reserve volume O b Residual volume inspiratory volume and expiratory volume O c Tidal volume Inspiratory reserve volume and residual volume Od Expiratory reserve volume inspiratory reserve volume and residual volume

The accessory muscles of inhalation include O a Diaphragm Ob Internal intercostals OC Sternocleidomastoid O d External intercostals

Some capillaries contain these small openings in the endothelial lining O a Fenestration b Venous valves Gap junctions d Tight junctions Oc

Considering action potential which of the following is correct Threshold stimulus is required O b K goes from ECF to ICF Does not obey all or none phenomenon d It is a gradual phenomenon

The amount of air that can be inspired above the tidal volume is O a Vital capacity O b Tidal air c Expiratory reserve Od Inspiratory reserve

Blood passes from the left atrium into the left ventricle through O a Aortic semilunar valve b Tricuspid valve Mitral valve Oc Od Pulmonary semilunar valve

The main function of surfactant is Reduce alveolar pressure O b Increase alveolar pressure OC Increase surface tension of alveolar fluid d Reduce surface tension of alveolar fluid S C P Categ P D P P

Blood viscosity may be deccreased by a Polycythemia O b All answers are correct Anemia Od Dehydration

Which of the following depolarizes next after the AV node O a Bundle of His O b SA node O c Right and left bundle branches O d Purkinje fibers

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

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

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