Tag: circulatory system

Questions Related to circulatory system

Choose the correct answer from the alternatives given.
Water enters capillaries on the venule side as a result of:

evs transportation in living organisms circulatory system and organs blood and blood vessels circulatory system blood pressure

  1. higher red blood cell concentration on this side

  2. increased blood pressure on this side

  3. an osmotic pressure gradient

  4. active transport from tissue fluid

Show answer
Correct Option: C
Explanation:

  • Materials, including oxygen, carbon dioxide, amino acids, sugars, and water, are exchanged between the blood and tissue fluid within blood vessels known as capillaries.
  • Blood pressure and osmotic pressure control the pressure in a capillary. Blood pressure, caused by the heart’s beating, is higher at the arterial end of the capillary and causes water to exit at that point.
  • On the other hand, blood pressure is weak by the time blood reaches the venous end of the capillary, and osmotic pressure becomes higher, causing water to enter at that end.
So, the correct option is 'An osmotic pressure gradient'.

Choose the correct answer from the alternatives given.
Which of the following is the bodys largest blood vessel?

evs transportation in living organisms circulatory system and organs blood and blood vessels circulatory system blood pressure

  1. Aorta

  2. Capillaries

  3. Pulmonary vein

  4. Heart

Show answer
Correct Option: A
Explanation:

Aorta is the largest artery present in the body. It originates from the left ventricle and extends down to the abdomen. The aorta distributes oxygenated blood to all parts of the body.

So, the correct option is 'Aorta'.

The heart is slightly tilted towards the 

evs transportation in animal and plants circulatory system and organs blood and blood vessels transportation in living organisms blood pressure circulatory system blood circulatory system

  1. Right side

  2. Not tilted at all

  3. Left side

  4. Upper side

Show answer
Correct Option: C
Explanation:

The human circulatory system consists of a muscular four-chambered heart, a network of closed branching blood vessels and blood, the fluid which is circulated. The heart is mesodermal in origin. It is situated in the thoracic cavity, in between the two lungs. The heart is slightly tilted towards the left side because the right lung is larger than the left lung. This condition provides the heart with enough space to function properly and pump blood efficiently to different parts of the body.

So, the correct answer is 'Left side'.

If the systolic pressure is 120 mm Hg and diastolic pressure is 80 mm Hg, the pulse pressure is ____.

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

  1. 120 x 80 = 9600 mm Hg

  2. 120 + 80 = 200 mm Hg

  3. 120-80 = 40 mm Hg

  4. $\frac {120}{80}$ = 1.5 mm Hg

Show answer
Correct Option: C
Explanation:
The pulse pressure can be defined as the difference between the diastolic and systolic pressure of an individual’s heart. If the normal diastolic and systolic pressure of the adult human heart is 120 mm Hg and 80 mm Hg, respectively then the pulse pressure is 120 - 80 = 40 mm Hg.
Thus, the correct answer is '120-80 = 40 mm Hg.'

Which one of the following statements is correct regarding blood pressure?

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

  1. 130/90 mm Hg is considered high and requires treatment.

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

  3. 105/50 mm Hg makes one very active.

  4. 190/110 mm Hg may harm vital organs like brain and kidney.

Show answer
Correct Option: D
Explanation:
The blood pressure above 140/90 mm Hg is considered a high blood pressure and recurrent such values of an individual’s blood pressure can indicate hypertension. Blood pressure with more than values 190/110 mm Hg can have disastrous effects on the kidney and the brain.
Thus, the correct answer is '190/110 mm Hg may harm vital organs like brain and kidney.'

Blood pressure is defined as the force with which blood

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

  1. Comes out of the atrium

  2. Is pushed to the legs

  3. Pushes against wall of blood vessels

  4. Comes out of the ventricle

Show answer
Correct Option: C
Explanation:

The force with which the blood pushes against the walls of the blood vessels, usually arteries, is known as the blood pressure. It is described in the unit mm Hg. The normal diastolic and systolic pressure of the adult human heart is 120 mm Hg and 80 mm Hg, respectively.

Thus, the correct answer is 'Pushes against wall of blood vessels.'

Which of the following statements is incorrect ? 

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

  1. Mammals have the ability to produce concentrated urine.

  2. Counter current is due to the flow of filtrate in two limbs of Henle's Loop in opposite direction.

  3. Henle's loop and vasa recta play a significant role in concentrating the urine.

  4. Flow of fitrate through vasa recta also follow the counter current pattern.

Show answer
Correct Option: D
Explanation:

Flow of blood through vasa recta follows counter current pattern. Filtrate flows through loop of Henle.

The reabsorption of the sodium from glomerular filtrate is regulated by the hormone _____________.

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

  1. Glucagon

  2. Secretin

  3. Aldosterone

  4. Adrenaline

Show answer
Correct Option: C
Explanation:

Aldosterone is secreted by the outer layer of the adrenal gland. When aldosterone is present in the blood, all the $Na^{+}$ in the filtrate is reabsorbed b the epithelial cells of DCT and collecting duct. Retaining $Na{+}$ raises the osmotic pressure of the blood and reduces water loss from the body. 

State the following statement true or false:
Contraction phase of the heart is the diastole. 

biology life processes blood pressure circulatory system transportation in animal and plants

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

A) The contraction phase of the heart is called systole.

B) The relaxation phase of the heart is called diastole.
So the correct answer is 'False'.

Normal systolic and diastolic value of blood pressure is

biology life processes blood pressure circulatory system transportation in animal and plants

  1. 80/120 mm Hg

  2. 80/40 mm Hg

  3. 140/80 mm Hg

  4. 120/80 mm Hg

Show answer
Correct Option: D
Explanation:

A) Blood pressure is always read as systolic/diastolic pressure. Systolic pressure is 120 mm Hg while diastolic pressure is 80 mm Hg.

B) The systolic pressure is 120 mm Hg while diastolic pressure is 80 mm Hg.
C) Systolic pressure is 120 mm Hg.
D) 120 mm Hg here, represents the systolic pressure and 80 mm Hg represents the diastolic pressure.
So the correct answer is '120/80 mm Hg'.