The systolic part of normal blood pressure showing 120 - 80 Hg actually points to the pressure thatA- Forces blood into veinsB- Draws blood from lungsC- Forces blood into arteriesD- Forces blood into lungs

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Biology

Blood Pressure

The systolic ...

Question

The systolic part of normal blood pressure showing 120/80 Hg actually points to the pressure that ___

Forces blood into lungs

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Draws blood from lungs

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Forces blood into arteries

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Forces blood into veins

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Solution

The correct option is C
Forces blood into arteries

Blood pressure usually has two limits - .the upper limit or the systolic pressure is when the fresh blood is pushing through the artery due to the contraction of the ventricles and the lower limit is the diastolic pressure which is recoreded after the wave of contraction has passed over. A reading of 120/80 mm Hg is considered normal.

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The systolic part of normal blood pressure showing 120/80 Hg actually points to the pressure that ___

Q. A normal systolic blood pressure is __(i)___ and a normal diastolic blood pressure is ___(ii)___.

Question 116 (ii)

Health Application A doctor reports blood pressure in millimetres of mercury (mm Hg) as a ratio of systolic blood pressure to diastolic blood pressure (such as 140 over 80). Systolic pressure is measured when the heart beats and diastolic pressure is measured when it rests. Refer to the table of blood pressure ranges for adults.
Manohar is a healthy 37 yr old man whose blood pressure is in the normal category.
If Manohar's systolic blood pressure is 102 mm Hg, then use the ratio from part (a) to predict his diastolic blood pressure.

Q. The human body has an organ A which acts as a double pump. The oxygenated blood coming from the lungs through a blood vessel B enters the upper left chamber C of the double pump. When chamber C contracts, then blood goes into lower left chamber D. The contraction of chamber D forces the blood to go into a blood vessel E which supplies oxygenated blood to all the organs of the body (except the lungs). The deoxygenated blood coming out of the body organs is taken by a blood vessel F to the right upper chamber G of pumping organ. Contraction of chamber G forces the deoxygenated blood into right lower chamber H. And finally the contraction of chamber H sends the deoxygenated blood into lungs through a blood vessel I.
(a) What is organ A?
(b) Name the blood vessel (i) B (ii) E (iii) F, and (iv) I.
(c) What are chambers (i) C, and (ii) D?
(d) What are chambers (i) G and (ii) H?

Q. Consider the following statements:
1. The force that blood exerts force against the wall of a vessel is called blood pressure.
2. The pressure of blood inside the artery during contraction is called systolic pressure and pressure in an artery during relaxation is called diastolic pressure.
3. Blood pressure is measured with an instrument called sphygmomanometer.
Which of the statements given above are correct?

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