Tag: biology

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Multiple choice biology human body and organ system blood pressure circulatory system transportation in animal and plants

Systolic pressure in a normal human is

  1. $70$ mm of Hg
  2. $80$ mm of Hg
  3. $90$ mm of Hg
  4. $120$ mm of Hg
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Blood pressure is measured in 2 categories, systolic blood pressure and diastolic blood pressure. The systolic pressure is the amount of pressure in the arteries during the contraction of the heart muscle. The diastolic pressure is the pressure during the resting period between heartbeats. The normal value of systolic pressure in human is 120 mm of Hg. The normal value of diastolic pressure in human is 80 mm of Hg.

Thus, the correct answer is '120 mm of Hg.'

Multiple choice biology human body and organ system blood pressure circulatory system transportation in animal and plants

In adult, man normal BP is 

  1. 100/80 mm Hg

  2. 120/80 mm Hg

  3. 100/120 mm Hg

  4. 80/120 mm Hg
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Blood pressure is the pressure of the circulating blood against the walls of the arteries, the veins, and the chambers of the heart. The blood pressure in the large artery of the heart, the aorta, and the other large arteries of a healthy adult is usually 120 mm Hg during the contraction of the heart (systole), and 80 mm Hg during relaxation of the heart (diastole). Normal blood pressure is less than 120/80 mm Hg. So, the correct answer is-120/80 mm Hg.

Multiple choice biology human body and organ system blood pressure circulatory system transportation in animal and plants

The instrument by which blood pressure of a man can be determined is

  1. Ultrasound

  2. Blood pressure meter

  3. Stethoscope

  4. Sphygmomanometer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A sphygmomanometer is an instrument, often attached to an inflatable air bladder cuff and used with a stethoscope, for measuring blood pressure in an artery.
So, the correct answer is option D.
Multiple choice biology human body and organ system blood pressure circulatory system transportation in animal and plants

Choose the correct statement: If the vasopressin receptor of a man is defective. Then

  1. He suffer from low blood pressure and dehydration.

  2. Shows hyperglycemic condition. c)

  3. Excessive thirst does not occurs

  4. The urea level in the urine is higher than the normal.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Vasopressin regulates the tonicity of body fluids. It is released from the posterior pituitary in response to hypertonicity and causes the kidneys to reabsorb solute-free water and return it to the circulation from the tubules of the nephron, thus returning the tonicity of the body fluids toward normal.
  • If vasopressin receptors are absent, it would result in increased loss of water from the body, leading to dehydration, increased thirst and Increased blood pressure.
So, the correct option is 'He suffers from low blood pressure and dehydration'.

Multiple choice biology human body and organ system blood pressure circulatory system transportation in animal and plants

Select the statement which correctly describes the particle pressure of gases in inhaled and exhaled air:

  1. The $pO _2$ in alveolar air is lower than $pO _2$ in venous blood
  2. The $pCO _2$ in exhaled air is greater than $pO _2$ in alveolar air
  3. The $pO _2$ in exhaled air is greater than $pCO _2$ in alveolar air
  4. The $pO _2$ in arterial blood s grater than $pO _2$ in alveolar air
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice biology human body and organ system blood pressure circulatory system transportation in animal and plants

Persons suffering from high blood pressure should take which of the following precautions to avoid excessive rise in their blood pressure?

  1. Sleep as much as possible

  2. Avoid standing

  3. Increase their weight

  4. Avoid emotional disturbances and excitement
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

High blood pressure can cause serious medical problems. Reacting to stress in high blood pressure can increase the risk of heart attacks and strokes due to the increase of blood flow in blood vessels. So, to avoid stress is one of the precautions for the persons having high blood pressure.

 Hence the correct answer is option D.