Tag: busy at work - our internal organs

Questions Related to busy at work - our internal organs

Consider the following statements: 
1. The force that blood exerts force against the wall of a vessel is called blood pressure. 
2. The pressure of blood inside the artery during contraction is called systolic pressure and pressure in an artery during relaxation is called diastolic pressure. 
3. Blood pressure is measured with an instrument called sphygmomanometer.
Which of the statements given above are correct?

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

  1. 1 and 2

  2. 1 and 3

  3. 2 and 3

  4. 1 , 2 and 3

Show answer
Correct Option: D

With which of the physiological process, thrombin is associated ?

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

  1. Excretion

  2. Blood clotting

  3. Reproduction

  4. Growth

Show answer
Correct Option: B

The largest artery in human body is

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

  1. Aorta

  2. Capillary

  3. Vena cava

  4. Pulmonary vein

Show answer
Correct Option: A

Which one of the following vitamins has a role in blood clotting?

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

  1. Vitamin A

  2. Vitamin D

  3. Vitamin E

  4. Vitamin K

Show answer
Correct Option: D
Explanation:
A. Vitamin A takes part in the formation of visual retinal pigments like rhodopsin, iodopsin etc. and thus, it is required for normal vision.
B. Vitamin D regulates the metabolism of calcium and phosphorus and in turn affects the growth of body by affecting the growth of bone and teeth.
C. Vitamin E is necessary for maintaining sterility.
D. Vitamin K is necessary for the formation of prothrombin (important component of blood clotting mechanism) in the liver of human beings and thus, it is involved in clotting of blood.
So, the correct answer is 'Vitamin K'.

Which of the following disease is caused when plaque blocks the arteries which supply blood to the heart?

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

  1. Coronary heart disease

  2. Haemophilia

  3. Arthritis

  4. Leukemia

Show answer
Correct Option: A
Explanation:

Coronary artery disease develops when the major blood vessels that supply our heart with blood, oxygen, and nutrients become damaged or diseased. The disease is caused when plaque blocks the arteries which supply blood to the heart.

The blood of many animals is red because of the presence of this pigment containing iron. What is it called?

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

  1. Chlorophyll

  2. Haemoglobin

  3. Biliverdin

  4. Bilirubin

Show answer
Correct Option: B
Explanation:

Hemoglobin is a protein present in the red blood cells. The hemoglobin carries oxygen in the blood and transfers it in our body, it is the element that gives red color to our blood. Iron works as a booster towards hemoglobin production in the blood.

Complete digestion takes place in which part of cockroach?

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

  1. In crop

  2. In Gizzard

  3. In stomach

  4. In oesophagous

Show answer
Correct Option: C
Explanation:

Cockroaches belong to phylum Arthropoda which has well developed the digestive system. The digestion of starch in the buccal cavity is followed by complete grinding of food in crop and gizzard which finally enters the stomach. The digestive enzymes secreted by the gastric caeca act upon the food in the stomach. These enzymes include amylase, maltase, invertase, tryptase and lipase. The remaining carbohydrates, proteins and fats are digested here.The digested food is absorbed through the stomach walls into the surrounding space which is called the haemocoel. The haemocoel consists of a large number of fat bodies which are fat cells having fat globules, protein granules and glycogen. They form storage structures which transport to different parts of the body. So, the correct answer is option C.

Strongest proteolytic enzyme is released by ............ part of alimentary canal.

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

  1. Ileum

  2. Pancreas

  3. Stomach

  4. Liver

Show answer
Correct Option: C
Explanation:

The oesophagus leads into the stomach. The stomach is a muscular sac. The stomach is the most important site of protein digestion. Stomach wall has peptic cells, chief cells secrete pepsinogen and oxyntic and parietal cells secrete hydrochloric acid. The pepsinogen is activated to pepsin on exposure to hydrochloric acid. The pepsin is a chief proteolytic enzyme of the alimentary canal. Another important enzyme of the stomach is lysozyme which is antibacterial. Thus, the correct answer is option C.

Pylorus is the constricted part of the alimentary canal which is situated in between 

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

  1. Oesophagus and stomach

  2. Stomach and duodenum

  3. Duodenum and ileum

  4. Ileum and rectum

Show answer
Correct Option: B
Explanation:

The pylorus is a narrow cone shaped constriction present at the end of the stomach and the beginning of the small intestine. It contains two region antrum which connects the parts of the stomach and pyloric canal which connects the stomach and small intestine.  Thus, the correct answer is option B.

The amount of gastric juice secreted per day from man's stomach is about

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

  1. 500 ml to 800 ml

  2. 1200 ml to 1500 ml

  3. 100 ml to 500 ml

  4. 10 ml to 15 ml

Show answer
Correct Option: B
Explanation:

The gastric mucosa is present is in the inner wall of the stomach which secretes 1.2 to 1.5 litres of gastric juice per day. Gastric juice is a mixture of HCl, mucous and digestive enzymes which makes food particles soluble, initiates protein digestion and converts the gastric contents to a semiliquid mass called chyme, thus preparing it for further digestion in the small intestine. This juice is highly acidic because of its hydrochloric acid content, and it is rich in enzymes.