A nerve impulse is an electrical signal that travels along an axon of nerve cells Answer : (d)

A mismatch during transfer of blood causes Agglutination Agglutination is the process that occurs if an antigen is mixed with its corresponding antibody Answer : (a)

It is responsible for the removal of interstitial fluid from tissues. It absorbs and transports fatty acids and fats as chyle from the digestive system. It transports white blood cells to and from thelymph nodes into the bones. Answer : (c)

Erythroblastosisfoetalis: refers to two potentially disabling or fatal blood disorders in infants: Rh incompatibility disease and ABO incompatibility disease. Answer : (c)

Lymph nodes are major sites of B and T lymphocytes, and other white blood cells. Lymph nodes are important for the proper functioning of the immune system, acting as filters for foreign particles and cancer cells. Lymph nodes do not have a detoxification function, which is primarily dealt with by the liver and kidneys. Answer : (d)

Artificial pacemaker is a medical device which uses electrical impulses, delivered by electrodes contracting the heart muscles, to regulate the beating of the heart. Answer : (d)

Carbon dioxide is transported in the blood from the tissue to the lungs in three ways: (i) dissolved in solution; (ii) buffered with water as carbonic acid; (iii) bound to proteins, particularly haemoglobin. Approximately 75% of carbon dioxide is transport in the red blood cell and 25% in the plasma Answer : (b)

first heart sound ‘lub’ (S1) produced by the closing of the atrioventricular valves The first heart sound (lub) can be heard the loudest second heart sound ‘dub’ (S2), produced by the closing of the semilunar valves, Answer : (b)

In liver Ammonia is converted to Urea Answer : (d)

Answer : (a)

Pathway of myogenic impulse conduction is SA Node → AV Node → Bundle of His → Purkinje fibres The AV node serves as an electrical relay station, slowing the electrical current sent by thesinoatrial (SA) node before the signal is permitted to pass down through to the ventricles. Answer : (b)

Fe is in coordinate bond with nitrogen Answer : (a)

Phenotype (Blood group)	Genotype
Type A	IAIA or IA i
Type B	IBIB or IB i
Type AB	IA IB
Type O	i i

Parent Father (B) IBIB or IB i Mother (O) i i Gametes IB , i i Progeny IB I or ii Answer : (d)

Answer : (b)

Answer : (c)

Pericardial fluid is the serous fluid secreted by the serous layer of the pericardium into the pericardial cavity. The serous pericardium, in turn, is divided into two layers, the parietal pericardium, which is fused to and inseparable from the fibrous pericardium, and the visceral pericardium. Answer : (c)

Answer : (a)

Answer : (d)

Parent	IBIB	IBIO
Gametes	IB	IB and Io
Progeny	IBIB or IB IO ( group B)

Answer : (c)

Enterohepatic circulation: refers to the circulation of biliary acids, bilirubin, drugs, or other substances from the liver to the bile. Cholecystokinin: a hormone which is secreted by cells in the duodenum and stimulates the release of bile into the intestine and the secretion of enzymes by the pancreas. Answer : (d)

Answer : (b)

Diastole is the part of the cardiac cycle when the heart refills with blood A shown in figure during diastole heart is filled with Venous blood and Arterial blood Blood that has passed through the capillaries of various tissues other than the lungs, is found in the veins, in the right chambers of the heart, and in pulmonary arteries, and is usually dark red as a result of a lower content of oxygen. Answer : (b)

Brain requires maximum blood supply Answer : (c)

Blood in the veins are basically carrying waste material waste material is carbon dioxide, when carbon dioxide moves from the cell to the blood, part of it is stored as carbonic acid, which leads to the blood in veins having a lower pH, Answer : (a)

Splenic artery: splenic artery (in the past called the lienal artery) is the blood vessel that supplies oxygenated blood to the spleen. It branches from the celiac artery, and follows a course superior to the pancreas. The celiac artery, also known as the celiac trunk, or truncuscoeliacus, is the first major branch of the abdominal aorta Answer : (b)

Some clotting enzymes in the blood (factors II, VII, IX, and X) require calcium ion (Ca++) to work enzymatically. In fact, all blood in blood banks is treated with citrate which binds all the free calcium, keeping the blood fluid and unclotted for months Answer : (c)

The MN blood system :The possible phenotypical forms are three blood types: type M blood, type N blood and type MN blood. Lewis and Duffy :There are two main types of Lewis antigens, Lewis a (Le-a) and Lewis b (Le-b). There are three common phenotypes: Le(a+b-), Le(a-b+), and Le(a-b-) Answer : (c)

Mitral valve lies between the left atrium and the left ventricle. Also called as Bicuspid valve Answer : (c)

Answer : (c)

This electrical signal begins in the sinoatrial (SA) node, located at the top of the heart's upper-right chamber (the right atrium). The SA node is sometimes called the heart's "natural pacemaker." May be called as ‘Heart of Heart’ Answer : (a)