Hepatic portal system - class-X
| Description: hepatic portal system | |
| Number of Questions: 16 | |
| Created by: Divya Kade | |
| Tags: the circulatory system transport in animals biology |
Which of the following vessel in rabbit starts with capillaries and ends in capillaries?
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Pulmonary artery
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Renal vein
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Hepatic portal vein
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Renal artery
The hepatic portal system includes the veins that drain blood from capillaries in the spleen, stomach, pancreas, and intestine. Instead of emptying their blood directly into the inferior vena cava, they deliver it by way of the hepatic portal vein to the liver. Upon entering the liver, the portal vein divides and sub-divides into ever smaller branches. Eventually, the portal blood flows into a vast network of sinus like vessels called sinusoids. These are enlarged capillaries that serve as blood channels within the tissues of the liver, spleen, thyroid gland, and other structures. After leaving the sinusoids, blood is finally collected by the hepatic veins, which empty into the inferior vena cava.
Hepatic portal system connects
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Digestive system to liver.
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Kidney to liver.
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Liver to digestive system.
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Liver to kidney.
Mark the correct statement about lymph.
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It Maintains the volume of blood.
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It destroys the invading microbes.
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Both A and B are true for lymph
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None of these
Lymph acts as middle man which transports food materials, oxygen, hormones etc. to the body cells and brings carbon dioxide and other metabolic wastes from the body cells to blood and then finally pours the same into venous system. It destroys the invading germs and it maintains the volume of blood.
Middle man of blood is _______
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RBCs
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Lymph
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Platelets
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Serum
Lymph acts as middle man which transports food materials, oxygen, hormones etc to the body cells and brings carbon dioxide and other metabolic wastes from the body cells to blood and then finally pours the same into venous system.
The veins starting from the stomach and intestines do not directly convert the blood to the posterior vena cava. Instead, they first enter the ........... as a combined hepatic portal vein.
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Kidney
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Pancreas
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Spleen
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Liver
The hepatic portal vein carries blood from the spleen and intestines into the liver. The veins from the spleen and intestines break into capillaries before entering the liver as the hepatic portal vein.
Which of the following is an example of portal vein?
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Renal portal vein
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Hepatic portal vein
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Both A and B
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None of the above
The hepatic portal vein carries blood from the spleen and intestines into the liver. The veins from the spleen and intestines break into capillaries before entering the liver as the hepatic portal vein.
Artificial pacemaker is implanted subcutaneously for correcting
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90% blockage of coronary arteries
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High blood pressure
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Arteriosclerosis
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Irregularity of heart rhythm.
A portal system is one in which
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A vein starts from an organ and ends up in heart.
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A vein starts from an organ and ends up in another organ.
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A vein starts from heart and ends up in lungs.
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None of the above.
Both hepatic and renal portal systems are found in
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Fishes, amphibians, reptiles
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Amphibians, reptiles, mammals
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Reptiles, aves, mammals
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Cyclotomes, fishes, amphibians
Hepatic (liver) portal system collects blood from the intestine and passes it to the liver and renal (kidney) portal system collects blood from renal glomeruli and passes it to peritubular plexus (the blood capillaries that surrounds the proximal and distal convoluted tubules). Both hepatic and renal portal systems are found in fishes, amphibians and reptiles. In mammals only hepatic portal system is present.
Valve surrounding opening of coronary sinus is
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Thebesius valve
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Eustachian valve
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Mitral valve
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Semilunar valve.
Which one is hypothetical coagulating factor?
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Accelerin
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Christmas factor
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Lakilovand factor
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Stuart factor.
The hepatic portal vein is located between the:-
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hepatic vein and the vena cava
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small intestine and the liver
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mouth and the stomach
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pancreas and the small intestine
Measuring approximately 8 cm (3 inches) in adults, the portal vein is located in the right upper quadrant of the abdomen, originating behind the neck of the pancreas. In most individuals, the portal vein is formed by the union of the superior mesenteric vein and the splenic vein
__________ ml of oxygen is transported per deciliter of blood under normal conditions to tissues.
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$a = 9.8\ ml, b = 6000\ ml$ to $8000\ ml, c = 12\ to \ 16, d = 3$
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$a = 5\ ml, b = 500\ ml, c = 12\ to \ 16, d = -3$
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$a = 5\ ml, b = 6000\ ml$ to $8000\ ml, c = 12\ to \ 16, d = 3$
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$a = 5\ ml, b = 6000\ ml$ to $8000\ ml, c = 18 times, d = 7$
The circulatory system of a rabbit differs from that of a frog in that there
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Renal portal system in rabbit
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Hepatic portal system in rabbit
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Posterior vena cava in rabbit
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Dorsal aorta in rabbit
- The renal portal system is absent in the rabbit. The hepatic portal system is present in rabbit and it consists of a hepatic portal vein ventral to the post caval vein. It enters into the liver, divides into a number of branches to supply to various lobes of the liver.
- In the rabbit, the blood from different organs of the body is collected by two superior vena cavae and a posterior vena cava which open separately into the right auricle.
- In Frog, the blood from different organs of the body is collected by two precavals and one post caval which unite together to form a sinus venosus that in turn opens into the right auricle.
Which one is not the use of hepatic portal system?
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To convert carbohydrate into glycogen.
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To separate ammonia.
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To kill bacteria.
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To convert protein into carbohydrate.
The hepatic portal system is the system of blood vessels that connect the gastrointestinal system and the liver. The nutrients digested by the intestines are transported to the liver, where the excess of carbohydrates is converted into glycogen. The amino acids are broken down and ammonia is released, which is soon converted to urea through the Ornithine cycle. The liver has Kupffer cells that kill the bacteria before the nutrients move out to the different organs of the body.
Which of the following pairs are correctly matched?
A. Crocodile 4-chambered heart
B. Sea Urchin Parapodia
C. Obelia Metagenesis
D. Lemur Thecodont
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Only A and B
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A, C and D
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B, C and D
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Only A and D
- Reptiles have two chambered heart accept crocodiles which have four chambered heart.
- In obilia alternation of generation is called metagenesis in which an asezual polyploid generation appears to alternate regularly with a sexual medusoid generation.
- Thecodont dentition is found in mammals.
- So, (D) is the correct answer.