Tag: body fluids and circulation

Questions Related to body fluids and circulation

Hypertension occurs when blood pressure is consistently above

biology body fluids and circulation cardiac disorders cardiac regulation and disorders the blood system

  1. 120/180

  2. 140/180

  3. 120/85

  4. 140/90

Show answer
Correct Option: D
Explanation:

Hypertension is caused due to an elevation in the pressure applied during the blood flow in the blood vessels. Blood pressure is expressed by two measurements, the systolic and diastolic pressures, which are the maximum and minimum pressures, respectively, in the arterial system. The systolic pressure occurs when the left ventricle is most contracted, the diastolic pressure occurs when the left ventricle is most relaxed prior to the next contraction. Normal blood pressure at rest is within the range of 100–140 millimeters mercury (mmHg) systolic and 60–90 mmHg diastolic. Hypertension is present if the blood pressure is persistently at or above 140/90 mmHg for most adults. 

So, the correct answer is option D.

Hypertension occurs due to

biology body fluids and circulation cardiac disorders cardiac regulation and disorders the blood system

  1. Smoking

  2. Obesity

  3. Stress

  4. All of the above

Show answer
Correct Option: D
Explanation:
Hypertension is defined as an increase in the blood pressure in the arteries. It is a severe condition which may lead to heart strokes. Obesity, smoking, diabetes type 1 or type 2, kidney disease, high alcohol intake, stress, excessive salt intake, lack of exercise, certain medicines, such as steroids are the common cause of hypertension.
So, the correct answer is option D.

High blood pressure is called as

biology body fluids and circulation cardiac disorders cardiac regulation and disorders the blood system

  1. Hypotension

  2. Hypermetropia

  3. Hypertension

  4. Myopia

Show answer
Correct Option: C
Explanation:

Hypertension is the term for high blood pressure when blood pressure is higher than normal (normal 120/80 mmHg). In this measurement 120 mm Hg (millimeters of mercury pressure) is the systolic, or pumping pressure and 80 mm Hg is the diastolic, or resting pressure. If repeated checks of blood pressure of an individual are 140/90 (140 over 90) or higher, it shows hypertension. High blood pressure leads to heart diseases and also affects vital organs like brain and kidney.

So, the correct answer is option C.

Pace maker of the heart is

biology body fluids and circulation cardiac disorders cardiac regulation and disorders the blood system

  1. S.A. node

  2. A.V. node

  3. A .V. septum

  4. L A. septum

Show answer
Correct Option: A
Explanation:

S.A node called as pacemaker ,node of keith and  flack heart , brain of heart ,pulsation centre. 

An artifical pacemaker is implanted subcutaneously and
connected to the heart in patients

biology body fluids and circulation cardiac disorders cardiac regulation and disorders the blood system

  1. Having 90% blockage of the three main coronary arteries

  2. Having a very high blood pressure

  3. With irregularity in the heart rhythm

  4. Suffering from arteriosclerosis

Show answer
Correct Option: C
Explanation:

When irregularity in the heart rhythm occurs, normal heart rhythm can be reared and maintained by surgically implanting an artificial pace maker, a device that sends out small electrical current to stimulate the heart to contract.

Increase in blood pressure is

biology body fluids and circulation cardiac disorders cardiac regulation and disorders the blood system

  1. Arteriosclerosis

  2. Atherosclerosis

  3. Hypertension

  4. None of the above

Show answer
Correct Option: C
Explanation:
Hypertension is a condition in which blood pressure increases above systolic pressure (140 mm Hg) and diastolic pressure (90 mm Hg). This condition is also known as high blood pressure. It occurs due to emotional  stress and nervous tension that leads to contraction of arteries. It is one of the major causes of heart failure and stroke. Due to hypertension, the arteries of kidneys may get damaged and this causes chronic nephritis. 
So, the correct answer is 'Hypertension'.

What is correct regarding blood pressure?

biology body fluids and circulation cardiac disorders cardiac regulation and disorders the blood system

  1. 105/50 mm Hg makes one very active

  2. 100/55 mm Hg is considered at ideal blood pressure

  3. 190/110 mm Hg may harm vital organs like brain and kidneys

  4. 130/90 mm Hg is considered as high and requires treatment

Show answer
Correct Option: C
Explanation:
Blood pressure 190/110 mm Hg indicates high blood pressure or hypertension. Normal systolic and diastolic blood pressure in body is 140 mm Hg and 90 mm Hg respectively. Pressure above 140 mm Hg and 90 mm Hg is high blood pressure which can cause damage to vital organs like brain and kidney. High blood pressure can cause damage to blood vessels in brain and kidney. This can lead to rupture of blood vessels and cause brain haemorrhage. In kidneys, high blood pressure can lead to inadequate supply of blood to kidney and thus, resulting in decreased filtration.
So, the correct answer is '190/110 mm Hg may harm vital organs like brain and kidneys'.

A patient was administered a chemical agent called Guanfacine hydrochloride after the patient showed the symptoms like shortness of breath and headache. Guantacme hydrochloride is a known stimulant of central $\alpha - 2 $ -adrenergic receptors of the medulla regulating the sympathetic nervous system. The patient in this case must be suffering from

biology body fluids and circulation cardiac disorders cardiac regulation and disorders the blood system

  1. Hypertension

  2. Hyperslimulation

  3. Hyperpolarization

  4. None of the above

Show answer
Correct Option: A
Explanation:

Alpha 2 receptors in the brain stem and in the periphery inhibit sympathetic activity and thus lower blood pressure.

Guanfacine is an antihypertensive drug whose principal mechanism of action is the stimulation of central α2-adrenergic receptors. By stimulating these receptors, guanfacine reduces sympathetic nerve impulses from the vasomotor center to the heart and blood vessels. This decreases blood pressure.
So, the correct option is 'Hypertension'. 

Which of the following should a heart patient firmly avoid?

biology body fluids and circulation cardiac disorders cardiac regulation and disorders the blood system

  1. Cream

  2. Mango

  3. Rice

  4. Milk

Show answer
Correct Option: A
Explanation:

Heart diseases can be caused due to a number of factors such as  age, gender, tobacco use, physical inactivity, excessive consumption of alcohol, unhealthy diet, obesity, family history of cardiovascular disease, hypertension, diabetics, high cholesterol levels , psychosocial factors and pollution, However, a patient with any form of heart disease should avoid cream as intake of dietary trans fat tends to perturb  the body's ability to metabolize the essential fatty acids which lead to changes in the  phospholipid fatty acid composition of the main artery of the heart. This tends to increase the risk of coronary heart disease.

So, the correct answer is option A.

Rh factor may be responsible for

zoology body fluids and circulation compatibility of blood groups blood group blood groups and compatibility advance

  1. Turner's syndrome

  2. Accquired Immuno Deficiency Syndrome

  3. Sickle cell anaemia

  4. Erythroblastosis foetalis

Show answer
Correct Option: D
Explanation:

Erythroblastosis foetalis is a disease of the new born which is caused by Rh incompatibilty. This happens when mother is Rh negative and the child she is bearing is Rh positive. Thus the Rh antigen of child can trigger the antibodies inside mother which can travel through circulation thus destroying foetus blood cells. Thus, correct answer is option D.