18. Spinal nerves exlti A. Lumbar plexus B. Femoral plexus C. Sacral plexus D. P
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18. Spinal nerves exlti A. Lumbar plexus B. Femoral plexus C. Sacral plexus D. Pelvic plexus E. Brachial plexus ng the cord from the level of L4 to about SA form the 19. Urine is carried from the kidney to the A. Urethra B. Ureter C. Calyces D. Renal columns E. Renal tubules urinary bladder by the 20. All cardiac veins empty into the which then empties into the A. Coronary; sinus B. Coronary sinus; right atrium C. Great cardiac vein; right atrium D. Great cardiac vein; superior vena cava E. Inferior vena cava; left atrium 21. The chordae tendineae A. Connect the atria to the ventircles B. Are found in the interventricular septum C. Are part of the conducting system of the heart D. Connect the flaps of the AV valves to the papillary muscles E. Are a part of the myocardium 22. Lymph nodes are surrounded by a dense connective called A. Cortex B. Capsule C. Reticulum D. Trabeculum E. Basement membrane 23. The diameter of bronchioles can change because their walls contain A. Smooth muscle B. Skeletal muscle C. Fibrous cartilage D. Hyaline cartilage E. Elastic cartilage 24. Which of the following is part of the upper respiratory tract? A. Larynx B. Pharynx C. Trachea D. Bronchi E. BronchiolesExplanation / Answer
18) c sacral plexus
It provide motor and sensory nerve supply for posterior thigh lower leg and some part of pelvis and foot.it is part of lumbosacral plexus and emerges from lumbar and saccral vertebrae.
19)b ureter
Urine is carried from kidney to bladder by narrow tubes called ureter.muscles relax and contract to force urine out of body.
20) b coronary sinus;right atrium
Coronary sinus recieves blood from small ,middle,oblique great cardiac vein,left marginal vein,and left posterior ventricular vein.which together drains into right atrium.
21)d.connect the flaps of av valve to papillary muscle.they arise as flaps join with av valves.
22)b .capsule
It contains some dense collagenous fibers with irregular fibers.it extends its trabeculae inside.they divide numerous compartment s .
23)A smooth muscle
They make the lung elastic and helps it to expand .the lamina propria is surrounded by smooth muscle.they are thin and no lining present.
24)a ,larynx but the portion of larynx above voice chord
It is another name of voice cords.
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