Biology – CIRCULATORY SYSTEM -Important Points

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Biology

CIRCULATORY SYSTEM

 

 

1.In B.P 120/80 the numerator (120)indicates systolic pressure.

2- The term cardiac refers to the organ of Heart .

3-The left ventricle receives oxygenated blood from leftatria atria.

4-The largest artery in the body of the man – Aorta

5-The blood flows through heart only once for completing one circulation is called single circulation.

6-Blood is collected from upper part of the body by superior venacava.

7-In a man caval vein open in to Right atrium.

8-The rate of pulse will be equal to HEART BEAT.

9-The right ventricle pumps deoxygenated blood to lungs.

10-pulmonary aorta arises from Right ventricle

11-Pulmonaryartery carries impure blood from right ventricle to lungs .

12-Doctors measure the blood pressure with the instrument is called sphygmomanometer.

13-.Volves are present in VEINS.

14-The blood vessels which starts from blood capillaries- veins

15-The contraction phase of of the heart is called systole

16-The relaxation phase of the heart is called Diastole .

17-In man pericardiald fluid present in pericardium protect the heart from injury.

18-Chambers below the atria are ventricles.

19-The blood vessels which ends with blood capillaries- Arteries

20-The blood capillaries were discovered by Marcello Malpighi

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