Tag: human body and organ system

Quizzes (14) Questions (108)

Questions Related to human body and organ system

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.

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

Blood pressure and heart beat is regulated by

  1. Insulin

  2. Adrenalin

  3. Optic nerve

  4. Growth hormone
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Epinephrine (adrenaline) and norepinephrine (noradrenaline) is a neurotransmitter which regulates the contraction and relaxation of the heart. The effect of adrenalin is known as the fight-or-flight response. It increases the heart beat.

So, the correct answer is option B.

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

In a normal man, blood pressure is

  1. 120/80mm of Hg

  2. 80/100 mm of Hg

  3. 80/120 mm of Hg

  4. 100/80 mm of Hg
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Blood pressure is defined as the pressure applied by the blood on the walls of arteries and veins during circulation. The instrument used is called a sphygmomanometer, and two variables are measured:
1. Systolic pressure, which occurs during heart muscle contraction, averages around 120 and is expressed in millimeters of mercury (mm Hg).
2. Diastolic pressure, which occurs during relaxation of the heart muscle, averages around 80 mm Hg.

So, the correct answer is option A.