Answer Questions :
Differentiate between the following pair of terms:
(a) Platelets and WBC :.
trate
(iv) Sodi
nort
(b) Pulmonary artery and pulmonary vein ......
(c) Vena cava and aorta :
Answers
Answer:
a)white blood cells help your body fight infections. Platelets help your blood to clot.
b)The pulmonary arteries and veins are unique in the type of blood they carry. Pulmonary arteries carry blood low in oxygen from the right side of the heart to the lungs and often contain blue latex. Pulmonary veins carry blood rich in oxygen to the left side of the heart and rarely contain any latex.
c)The aorta branches into arteries, which eventually branch into smaller arterioles.
The vena cava are the two largest veins that carry blood into the right upper chamber of the heart (the right atrium).
Answer:
ANSWER (a)
PLATELETS
1.These are colourless, oval or round, cytoplasmic fragments found floating in the blood.
2.These play a major role in blood clotting.
3.Their life span is 3-5 days and it is called thrombocytes.
WBC
WBC are colourless and lack haemoglobin, larger in quantity, and have distinct oval and lobed nucleus.
They prevent body from disease causing germs by providing immunity
Their life span is short i.e. 5 to 20 days.
ANSWER (b)
1.Pulmonary artery takes away blood from heart to lung of respective side. Pulmonary veins drain blood from lung (one pair from each side) to heart.
2.Blood in pulmonary artery is deoxygenated, blood in pulmonary vein is oxygenated.
3.Pulmonary artery carries blood from right ventricle of heart. Pulmonary vein carries blood towards left auricle of heart.
ANSWER (c)
AORTA
1.The aorta is a large ARTERY that carries blood from the heart to the body.
2.The aorta is an artery that carries blood away from the heart.
VENA CAVE
1.The vena cava is a vein that carries blood to the heart.
2.They are both the largest artery and vein, respectively, in the body.