Tag: busy at work - our internal organs

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Multiple choice evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

Consider the following statements:
$1$. Lymph transports oxygen to brain.
$2$. Lymph returns the intestinal fluid to the blood.
$3$. Lymph is modified blood that contains all except RBCs and certain proteins.
Which of the statement(s) given is/are correct?

  1. Only $2$
  2. $1$ and $2$
  3. $2$ and $3$

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lymph does not transport oxygen (that is the role of blood/hemoglobin). Lymph returns interstitial fluid to the blood and is similar to blood plasma but lacks RBCs and certain large proteins.

Multiple choice evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

Consider the following statements: 
1. A major part of CO$ _2$ transport occurs in blood in the form of bicarbonate.
2. O$ _2$ transport occurs via haemoglobin of RBC in the body.
3. Carbon monoxide combines with haemoglobin to form carboxyhaemoglobin.
4. Pneumoconiosis affects the workers who work mainly in coal mining industry.
Which of the statements given above are correct?

  1. 1, 2, 3 and 4

  2. 1, 2 and 3

  3. 2, 3 and 4

  4. 1 and 2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

All four statements are correct: CO2 is transported as bicarbonate, O2 is carried by hemoglobin, carbon monoxide binds to hemoglobin (forming carboxyhemoglobin), and pneumoconiosis is a lung disease caused by inhaling dust like coal dust.

Multiple choice evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

Which chamber of the human heart pumps fully oxygenated blood to the aorta and hence to the body?

  1. Right auricle

  2. Left auricle

  3. Right ventricle

  4. Left ventricle
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The left ventricle is the thick-walled chamber responsible for pumping oxygenated blood into the aorta, which then distributes it throughout the systemic circulation. The right side of the heart handles deoxygenated blood.

Multiple choice evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

If the radius of the blood vessel decreases, the blood pressure will ________.

  1. increase

  2. decrease

  3. remains same

  4. increases in male but decreases in female
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

According to the principles of fluid dynamics, as the radius of a blood vessel decreases (vasoconstriction), the resistance to blood flow increases. To maintain flow, the blood pressure must increase.

Multiple choice evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

Consider the following statements.
1. Heart is three-chambered in fishes.
2. Heart is four-chambered in birds.
3. All animals of class Amphibia are characterized by two pairs of limbs.
4. All reptiles respire by lungs only.
Which of the above statements given are correct?

  1. 1, 2, 3 and 4

  2. 1 and 3

  3. 2 and 4

  4. 2, 3 and 4
Reveal answer Fill a bubble to check yourself
D Correct answer
Multiple choice evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

What is the name of the vessel that delivers the nutrient rich blood from the stomach and small intestine to the liver?

  1. Left hepatic artery

  2. Hepatic vein

  3. Right hepatic artery

  4. Hepatic portal vein
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The hepatic portal vein is a unique vessel that carries nutrient-rich, deoxygenated blood from the gastrointestinal tract and spleen directly to the liver for processing before it enters the systemic circulation.