Question

Which of these is not a part of the small intestine?
a)Duodenum b) Illeum c) Rectum d) Jejunum
During the contraction of heart, what prevents the back flow of blood ? a) Valves in heart b) thick muscular walls of ventricles c) thin walls of atria d) all of the above
Which one of the following blood vessels contain only deoxygenated blood?
a) capillaries b) pulmonary vein c) pulmonary artery d) aorta

Answer 1

Answer:

1st ans rectum

2nd ans all of the above

3rd ans pulmonary artery

Answer 2

Answer:

1ST ONE:-OPTION C RECTUM

the rectum is the storage tank for our stood.

2ND ONE:-OPTION A VALVES IN HEART.

there are 4 valves in our heart-bicuspid,tricuspid,systemic valve and semi lunar valve at pulmonary artery.

3RD ONE:-OPTION B PULMONARY VEIN

the arteries contain pure blood(oxygenated) pulmonary arteryand the veins contains impure blood(deoxygenated) except pulmonary vein